Bump openapi-generator-maven-plugin

Bumps openapi-generator-maven-plugin from 4.2.3 to 5.1.0.

Signed-off-by: dependabot[bot] <support@github.com>

.gitignore

@@ -1,3 +1,5 @@
 **/.idea/
 **/*.iml
+**/.DS_Store
+**/.terraform
 

aws/aws-terraform/README.md

@@ -0,0 +1,11 @@
+# Terraform for creating Ads Resources
+
+Example code to create/update AWS resources with Terraform.
+Examples include Terraform capabilities of using modules, input variables and using Terraform cloud.
+
+## Blog posts
+
+Blog posts about this topic:
+
+* [Using Terraform to create AWS resources](https://reflectoring.io/terraform-aws/)
+

aws/aws-terraform/aws-app-stack-cloud/main.tf

@@ -0,0 +1,41 @@
+terraform {
+ 
+  backend "remote" {
+    hostname = "app.terraform.io"
+    organization = "pratikorg"
+    token = "pj7p59JFwSC4jQ.atlasv1.qfmTxLjTfaM5zKyaQrcGzuTojv6oCyLIoIAO7DkA2ieQY7OyINjINGGMiTczt62p1bs"
+    workspaces {
+      name = "my-tf-workspace"
+    }
+  }
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.36"
+    }
+  }
+}
+
+provider "aws" {
+  profile = "default"
+  region  = "us-west-2"
+}
+
+module "app_server" {
+  source = "./modules/application"
+
+  ec2_instance_type    = "t2.micro"
+  ami = "ami-830c94e3"
+  tags = {
+    Name = "server for web"
+    Env = "dev"
+  }
+}
+
+module "app_storage" {
+  source = "./modules/storage/"
+
+  bucket_name     = "io.pratik.tf-example-bucket"
+  env = "dev"
+}
+

aws/aws-terraform/aws-app-stack-cloud/modules/application/main.tf

@@ -0,0 +1,5 @@
+resource "aws_instance" "vm-web" {
+  ami           = var.ami
+  instance_type = var.ec2_instance_type
+  tags = var.tags
+}

aws/aws-terraform/aws-app-stack-cloud/modules/application/outputs.tf

@@ -0,0 +1,4 @@
+output "instanceID" {
+  description = "ID of ec2 instance"
+  value       = aws_instance.vm-web.id
+}

aws/aws-terraform/aws-app-stack-cloud/modules/application/variables.tf

@@ -0,0 +1,16 @@
+variable "ec2_instance_type" {
+  description = "Instance type"
+  type        = string
+}
+
+variable "ami" {
+  description = "ami id"
+  type = string
+}
+
+variable "tags" {
+  description = "Tags to set on the bucket."
+  type        = map(string)
+  default     = {Name = "server for web"
+                 Env = "dev"}
+}

aws/aws-terraform/aws-app-stack-cloud/modules/storage/main.tf

@@ -0,0 +1,9 @@
+resource "aws_s3_bucket" "s3_bucket" {
+  bucket = format("%s-%s",var.bucket_name,var.env)
+  acl    = "private"
+
+  tags = {
+    Name        = var.bucket_name
+    Environment = var.env
+  }
+}

aws/aws-terraform/aws-app-stack-cloud/modules/storage/outputs.tf

@@ -0,0 +1,4 @@
+output "arn" {
+  description = "ARN of the bucket"
+  value       = aws_s3_bucket.s3_bucket.arn
+}

aws/aws-terraform/aws-app-stack-cloud/modules/storage/variables.tf

@@ -0,0 +1,13 @@
+# Input variable definitions
+
+variable "bucket_name" {
+  description = "Name of bucket"
+  type        = string
+}
+
+variable "env" {
+  description = "Environment like dev, prod"
+  type = string
+}
+
+

aws/aws-terraform/aws-app-stack-input-vars/main.tf

@@ -0,0 +1,24 @@
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.27"
+    }
+  }
+}
+
+provider "aws" {
+  profile = "default"
+  region  = "us-west-2"
+}
+
+resource "aws_instance" "vm-web" {
+  ami           = "ami-830c94e3"
+  instance_type = var.ec2_instance_type
+
+  tags = {
+    Name = "server for web"
+    Env = "dev"
+  }
+}
+

aws/aws-terraform/aws-app-stack-input-vars/terraform.tfvars

@@ -0,0 +1 @@
+ec2_instance_type = "t2.micro"

aws/aws-terraform/aws-app-stack-input-vars/variables.tf

@@ -0,0 +1,4 @@
+variable "ec2_instance_type" {
+  description = "AWS EC2 instance type."
+  type        = string
+}

aws/aws-terraform/aws-app-stack-modules/main.tf

@@ -0,0 +1,33 @@
+terraform {
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.36"
+    }
+  }
+}
+
+provider "aws" {
+  profile = "default"
+  region  = "us-west-2"
+}
+
+module "app_server" {
+  source = "./modules/application"
+
+  ec2_instance_type    = "t2.micro"
+  ami = "ami-830c94e3"
+  tags = {
+    Name = "server for web"
+    Env = "dev"
+  }
+}
+
+module "app_storage" {
+  source = "./modules/storage/"
+
+  bucket_name     = "io.pratik.tf-example-bucket"
+  env = "dev"
+}
+

aws/aws-terraform/aws-app-stack-modules/modules/application/main.tf

@@ -0,0 +1,5 @@
+resource "aws_instance" "vm-web" {
+  ami           = var.ami
+  instance_type = var.ec2_instance_type
+  tags = var.tags
+}

aws/aws-terraform/aws-app-stack-modules/modules/application/outputs.tf

@@ -0,0 +1,4 @@
+output "instanceID" {
+  description = "ID of ec2 instance"
+  value       = aws_instance.vm-web.id
+}

aws/aws-terraform/aws-app-stack-modules/modules/application/variables.tf

@@ -0,0 +1,16 @@
+variable "ec2_instance_type" {
+  description = "Instance type"
+  type        = string
+}
+
+variable "ami" {
+  description = "ami id"
+  type = string
+}
+
+variable "tags" {
+  description = "Tags to set on the bucket."
+  type        = map(string)
+  default     = {Name = "server for web"
+                 Env = "dev"}
+}

aws/aws-terraform/aws-app-stack-modules/modules/storage/main.tf

@@ -0,0 +1,9 @@
+resource "aws_s3_bucket" "s3_bucket" {
+  bucket = format("%s-%s",var.bucket_name,var.env)
+  acl    = "private"
+
+  tags = {
+    Name        = var.bucket_name
+    Environment = var.env
+  }
+}

aws/aws-terraform/aws-app-stack-modules/modules/storage/outputs.tf

@@ -0,0 +1,4 @@
+output "arn" {
+  description = "ARN of the bucket"
+  value       = aws_s3_bucket.s3_bucket.arn
+}

aws/aws-terraform/aws-app-stack-modules/modules/storage/variables.tf

@@ -0,0 +1,13 @@
+# Input variable definitions
+
+variable "bucket_name" {
+  description = "Name of bucket"
+  type        = string
+}
+
+variable "env" {
+  description = "Environment like dev, prod"
+  type = string
+}
+
+

aws/aws-terraform/aws-app-stack/main.tf

@@ -0,0 +1,24 @@
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.27"
+    }
+  }
+}
+
+provider "aws" {
+  profile = "default"
+  region  = "us-west-2"
+}
+
+resource "aws_instance" "vm-web" {
+  ami           = "ami-830c94e3"
+  instance_type = "t2.micro"
+
+  tags = {
+    Name = "server for web"
+    Env = "dev"
+  }
+}
+

build-all.sh

@@ -86,6 +86,8 @@ if [[ "$MODULE" == "module5" ]]
 then
   # ADD NEW MODULES HERE
   # (add new modules above the rest so you get quicker feedback if it fails)
+  build_maven_module "spring-boot/spring-boot-actuator"
+  build_maven_module "mockito"
   build_maven_module "core-java/service-provider-interface"
   build_gradle_module "spring-boot/hazelcast/hazelcast-embedded-cache"
   build_gradle_module "spring-boot/hazelcast/hazelcast-client-server"

mockito/.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

mockito/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

mockito/README.md

@@ -0,0 +1,4 @@
+# Examples for [Clean Unit Tests With Mockito on reflectoring.io](https://reflectoring.io/clean-unit-tests-with-mockito)
+
+This repository contains the source code of the article's examples.
+It's based on Spring Boot and follows the Clean Architecture (aka Onion Architecture).

mockito/mvnw

@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

mockito/mvnw.cmd

@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

mockito/pom.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example.silenum.mockito</groupId>
+    <artifactId>mockito-examples</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <properties>
+        <!-- Project Properties -->
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+
+        <!-- Project Dependency Versions -->
+        <spring-boot.version>2.4.4</spring-boot.version>
+        <unitils-core.version>3.4.6</unitils-core.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${spring-boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <!-- Spring Dependencies -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+
+        <!-- Database -->
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- Test -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.unitils</groupId>
+            <artifactId>unitils-core</artifactId>
+            <version>${unitils-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

mockito/src/main/java/org/example/silenum/mockito/business/exception/ElementNotFoundException.java

@@ -0,0 +1,13 @@
+package org.example.silenum.mockito.business.exception;
+
+public class ElementNotFoundException extends Exception {
+
+    public ElementNotFoundException(String message) {
+        super(message);
+    }
+
+    public ElementNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/BaseService.java

@@ -0,0 +1,17 @@
+package org.example.silenum.mockito.business.service;
+
+import java.util.function.Supplier;
+
+import org.example.silenum.mockito.domain.entity.BaseDomain;
+
+public interface BaseService<D extends BaseDomain, E extends Exception> {
+
+    D save(D domain) throws E;
+
+    D find(Long id) throws E;
+
+    void delete(D domain) throws E;
+
+    Supplier<E> createSupplierOnElementNotFound(String message);
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/CantonService.java

@@ -0,0 +1,29 @@
+package org.example.silenum.mockito.business.service;
+
+import java.util.Set;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.Country;
+
+public interface CantonService extends BaseService<Canton, ElementNotFoundException> {
+
+    Canton findByAbbreviation(String abbreviation, boolean loadCities) throws ElementNotFoundException;
+
+    default Canton findByAbbreviation(String abbreviation) throws ElementNotFoundException {
+        return findByAbbreviation(abbreviation, false);
+    }
+
+    Canton findByName(String name, boolean loadCities) throws ElementNotFoundException;
+
+    default Canton findByName(String name) throws ElementNotFoundException {
+        return findByName(name, false);
+    }
+
+    Set<Canton> findAllByCountry(Country country, boolean loadCities);
+
+    default Set<Canton> findAllByCountry(Country country) {
+        return findAllByCountry(country, false);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/CantonServiceImpl.java

@@ -0,0 +1,88 @@
+package org.example.silenum.mockito.business.service;
+
+import java.util.Collections;
+import java.util.Set;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CantonRepository;
+
+public class CantonServiceImpl implements CantonService {
+
+    private static final String EXCEPTION_MESSAGE_TEMPLATE = "Canton with %s does not exist.";
+
+    private final CantonRepository cantonRepository;
+    private final CityService cityService;
+
+    public CantonServiceImpl(
+            CantonRepository cantonRepository,
+            CityService cityService) {
+        this.cantonRepository = cantonRepository;
+        this.cityService = cityService;
+    }
+
+    @Override
+    public Canton save(Canton canton) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "ID " + canton.getId());
+        return cantonRepository.save(canton)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public Canton find(Long id) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "id " + id);
+        return cantonRepository.find(id)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public void delete(Canton domain) {
+        cantonRepository.delete(domain);
+    }
+
+    @Override
+    public Supplier<ElementNotFoundException> createSupplierOnElementNotFound(String message) {
+        return () -> new ElementNotFoundException(message);
+    }
+
+    @Override
+    public Canton findByAbbreviation(String abbreviation, boolean loadCities) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "abbreviation " + abbreviation);
+        Canton canton = cantonRepository.findByAbbreviation(abbreviation)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+        return buildCanton(canton, loadCities);
+    }
+
+    @Override
+    public Canton findByName(String name, boolean loadCities) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "name " + name);
+        Canton canton = cantonRepository.findByName(name)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+        return buildCanton(canton, loadCities);
+    }
+
+    @Override
+    public Set<Canton> findAllByCountry(Country country, boolean loadCities) {
+        Set<Canton> cantons = cantonRepository.findAllByCountry(country);
+        return cantons.stream()
+                .map(canton -> Canton.builder().of(canton)
+                        .setCities(!loadCities ?
+                                Collections.emptySet() :
+                                cityService.findAllByCanton(canton))
+                        .setCountry(country)
+                        .build())
+                .collect(Collectors.toSet());
+    }
+
+    private Canton buildCanton(Canton canton, boolean loadCities) {
+        Set<City> cities = !loadCities ? Collections.emptySet() : cityService.findAllByCanton(canton);
+        return Canton.builder().of(canton)
+                .setCities(cities)
+                .build();
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/CityService.java

@@ -0,0 +1,18 @@
+package org.example.silenum.mockito.business.service;
+
+import java.util.Set;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+
+public interface CityService extends BaseService<City, ElementNotFoundException> {
+
+    City findByName(String name) throws ElementNotFoundException;
+
+    Set<City> findAllByCanton(Canton canton);
+
+    Set<City> findAllByCountry(Country country);
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/CityServiceImpl.java

@@ -0,0 +1,69 @@
+package org.example.silenum.mockito.business.service;
+
+import java.util.Set;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+
+public class CityServiceImpl implements CityService {
+
+    private static final String EXCEPTION_MESSAGE_TEMPLATE = "City with %s does not exist.";
+
+    private final CityRepository cityRepository;
+
+    public CityServiceImpl(CityRepository cityRepository) {
+        this.cityRepository = cityRepository;
+    }
+
+    @Override
+    public City save(City city) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "ID " + city.getId());
+        return cityRepository.save(city)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public City find(Long id) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "ID " + id);
+        return cityRepository.find(id)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public void delete(City domain) {
+        cityRepository.delete(domain);
+    }
+
+    @Override
+    public Supplier<ElementNotFoundException> createSupplierOnElementNotFound(String message) {
+        return () -> new ElementNotFoundException(message);
+    }
+
+    @Override
+    public City findByName(String name) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "name " + name);
+        return cityRepository.findByName(name)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public Set<City> findAllByCanton(Canton canton) {
+        return cityRepository.findAllByCanton(canton).stream()
+                .map(city -> City.builder()
+                        .of(city)
+                        .setCanton(canton)
+                        .build())
+                .collect(Collectors.toSet());
+    }
+
+    @Override
+    public Set<City> findAllByCountry(Country country) {
+        return cityRepository.findAllByCountry(country);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/CountryService.java

@@ -0,0 +1,38 @@
+package org.example.silenum.mockito.business.service;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Country;
+
+public interface CountryService extends BaseService<Country, ElementNotFoundException> {
+
+    Country findById(Long id, boolean loadCantons, boolean loadCities) throws ElementNotFoundException;
+
+    default Country findById(Long id, boolean loadCantons) throws ElementNotFoundException {
+        return findById(id, loadCantons, false);
+    }
+
+    default Country findById(Long id) throws ElementNotFoundException {
+        return findById(id, false, false);
+    }
+
+    Country findByName(String name, boolean loadCantons, boolean loadCities) throws ElementNotFoundException;
+
+    default Country findByName(String name, boolean loadCantons) throws ElementNotFoundException {
+        return findByName(name, loadCantons, false);
+    }
+
+    default Country findByName(String name) throws ElementNotFoundException {
+        return findByName(name, false, false);
+    }
+
+    Country findByCode(String code, boolean loadCantons, boolean loadCities) throws ElementNotFoundException;
+
+    default Country findByCode(String code, boolean loadCantons) throws ElementNotFoundException {
+        return findByCode(code, loadCantons, false);
+    }
+
+    default Country findByCode(String code) throws ElementNotFoundException {
+        return findByCode(code, false, false);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/business/service/CountryServiceImpl.java

@@ -0,0 +1,82 @@
+package org.example.silenum.mockito.business.service;
+
+import java.util.Collections;
+import java.util.Set;
+import java.util.function.Supplier;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CountryRepository;
+
+public class CountryServiceImpl implements CountryService {
+
+    private static final String EXCEPTION_MESSAGE_TEMPLATE = "Country with %s does not exist.";
+
+    private final CountryRepository countryRepository;
+    private final CantonService cantonService;
+
+    public CountryServiceImpl(
+            CountryRepository countryRepository,
+            CantonService cantonService) {
+        this.countryRepository = countryRepository;
+        this.cantonService = cantonService;
+    }
+
+    @Override
+    public Country save(Country country) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "ID " + country.getId());
+        return countryRepository.save(country)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public Country find(Long id) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "ID " + id);
+        return countryRepository.find(id)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+    }
+
+    @Override
+    public void delete(Country domain) {
+        countryRepository.delete(domain);
+    }
+
+    @Override
+    public Supplier<ElementNotFoundException> createSupplierOnElementNotFound(String message) {
+        return () -> new ElementNotFoundException(message);
+    }
+
+    @Override
+    public Country findById(Long id, boolean loadCantons, boolean loadCities) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "ID " + id);
+        Country country = countryRepository.find(id).orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+        return buildCountry(country, loadCantons, loadCities);
+    }
+
+    @Override
+    public Country findByName(String name, boolean loadCantons, boolean loadCities) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "name " + name);
+        Country country = countryRepository.findByName(name)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+        return buildCountry(country, loadCantons, loadCities);
+    }
+
+    @Override
+    public Country findByCode(String code, boolean loadCantons, boolean loadCities) throws ElementNotFoundException {
+        String exceptionMessage = String.format(EXCEPTION_MESSAGE_TEMPLATE, "code " + code);
+        Country country = countryRepository.findByCode(code)
+                .orElseThrow(createSupplierOnElementNotFound(exceptionMessage));
+        return buildCountry(country, loadCantons, loadCities);
+    }
+
+    private Country buildCountry(Country country, boolean loadCantons, boolean loadCities) {
+        Set<Canton> cantons = !loadCantons ?
+                Collections.emptySet() :
+                cantonService.findAllByCountry(country, loadCities);
+        return Country.builder().of(country)
+                .setCantons(cantons)
+                .build();
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/entity/BaseDomain.java

@@ -0,0 +1,83 @@
+package org.example.silenum.mockito.domain.entity;
+
+import java.time.ZonedDateTime;
+
+/**
+ * This {@link BaseDomain} defines the common fields of all domain objects.
+ * Every domain object must extends this {@link BaseDomain} for further processing.
+ */
+public abstract class BaseDomain {
+
+    private final Long id;
+    private final Integer version;
+    private final ZonedDateTime created;
+    private final ZonedDateTime updated;
+
+    protected BaseDomain(Builder<?> builder) {
+        id = builder.id;
+        version = builder.version;
+        created = builder.created;
+        updated = builder.updated;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Integer getVersion() {
+        return version;
+    }
+
+    public ZonedDateTime getCreated() {
+        return created;
+    }
+
+    public ZonedDateTime getUpdated() {
+        return updated;
+    }
+
+    /**
+     * Abstract Builder Pattern for Inheritance
+     *
+     * @param <T> Builder from Subtype
+     */
+    public abstract static class Builder<T extends Builder<T>> {
+
+        private Long id;
+        private Integer version;
+        private ZonedDateTime created;
+        private ZonedDateTime updated;
+
+        protected Builder() {
+        }
+
+        public T id(Long id) {
+            this.id = id;
+            return getThis();
+        }
+
+        public T version(Integer version) {
+            this.version = version;
+            return getThis();
+        }
+
+        public T created(ZonedDateTime created) {
+            this.created = created;
+            return getThis();
+        }
+
+        public T updated(ZonedDateTime updated) {
+            this.updated = updated;
+            return getThis();
+        }
+
+        /**
+         * Returns the this-object of the subtype.
+         *
+         * @return this-object of subtype
+         */
+        protected abstract T getThis();
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/entity/Canton.java

@@ -0,0 +1,93 @@
+package org.example.silenum.mockito.domain.entity;
+
+import java.util.Set;
+
+public class Canton extends BaseDomain {
+
+    private final String name;
+    private final String abbreviation;
+    private final Country country;
+    private final Set<City> cities;
+
+    private Canton(Builder builder) {
+        super(builder);
+        this.name = builder.name;
+        this.abbreviation = builder.abbreviation;
+        this.country = builder.country;
+        this.cities = builder.cities;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAbbreviation() {
+        return abbreviation;
+    }
+
+    public Country getCountry() {
+        return country;
+    }
+
+    public Set<City> getCities() {
+        return cities;
+    }
+
+    public static class Builder extends BaseDomain.Builder<Builder> {
+
+        private String name;
+        private String abbreviation;
+        private Country country;
+        private Set<City> cities;
+
+        private Builder() {
+        }
+
+        @Override
+        protected Builder getThis() {
+            return this;
+        }
+
+        public Builder setName(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder setAbbreviation(String abbreviation) {
+            this.abbreviation = abbreviation;
+            return this;
+        }
+
+        public Builder setCountry(Country country) {
+            this.country = country;
+            return this;
+        }
+
+        public Builder setCities(Set<City> cities) {
+            this.cities = cities;
+            return this;
+        }
+
+        public Builder of(Canton canton) {
+            this.id(canton.getId());
+            this.version(canton.getVersion());
+            this.created(canton.getCreated());
+            this.updated(canton.getUpdated());
+            this.name = canton.name;
+            this.abbreviation = canton.abbreviation;
+            this.country = canton.country;
+            this.cities = canton.cities;
+            return this;
+        }
+
+        public Canton build() {
+            return new Canton(this);
+        }
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/entity/City.java

@@ -0,0 +1,65 @@
+package org.example.silenum.mockito.domain.entity;
+
+public class City extends BaseDomain {
+
+    private final String name;
+    private final Canton canton;
+
+    private City(Builder builder) {
+        super(builder);
+        this.name = builder.name;
+        this.canton = builder.canton;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Canton getCanton() {
+        return canton;
+    }
+
+    public static class Builder extends BaseDomain.Builder<Builder> {
+
+        private String name;
+        private Canton canton;
+
+        private Builder() {
+        }
+
+        @Override
+        protected Builder getThis() {
+            return this;
+        }
+
+        public Builder setName(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder setCanton(Canton canton) {
+            this.canton = canton;
+            return this;
+        }
+
+        public Builder of(City city) {
+            this.id(city.getId());
+            this.version(city.getVersion());
+            this.created(city.getCreated());
+            this.updated(city.getUpdated());
+            this.name = city.name;
+            this.canton = city.canton;
+            return this;
+        }
+
+        public City build() {
+            return new City(this);
+        }
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/entity/Country.java

@@ -0,0 +1,80 @@
+package org.example.silenum.mockito.domain.entity;
+
+import java.util.Set;
+
+public class Country extends BaseDomain {
+
+    private final String name;
+    private final String code;
+    private final Set<Canton> cantons;
+
+    private Country(Builder builder) {
+        super(builder);
+        this.name = builder.name;
+        this.code = builder.code;
+        this.cantons = builder.cantons;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public Set<Canton> getCantons() {
+        return cantons;
+    }
+
+    public static class Builder extends BaseDomain.Builder<Builder> {
+
+        private String name;
+        private String code;
+        private Set<Canton> cantons;
+
+        private Builder() {
+        }
+
+        @Override
+        protected Builder getThis() {
+            return this;
+        }
+
+        public Builder setName(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder setCode(String code) {
+            this.code = code;
+            return this;
+        }
+
+        public Builder setCantons(Set<Canton> cantons) {
+            this.cantons = cantons;
+            return this;
+        }
+
+        public Builder of(Country country) {
+            this.id(country.getId());
+            this.version(country.getVersion());
+            this.created(country.getCreated());
+            this.updated(country.getUpdated());
+            this.name = country.name;
+            this.code = country.code;
+            this.cantons = country.cantons;
+            return this;
+        }
+
+        public Country build() {
+            return new Country(this);
+        }
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/repository/BaseDomainRepository.java

@@ -0,0 +1,15 @@
+package org.example.silenum.mockito.domain.repository;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.domain.entity.BaseDomain;
+
+public interface BaseDomainRepository<D extends BaseDomain> {
+
+    Optional<D> save(D domain);
+
+    Optional<D> find(Long id);
+
+    void delete(D domain);
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/repository/CantonRepository.java

@@ -0,0 +1,17 @@
+package org.example.silenum.mockito.domain.repository;
+
+import java.util.Optional;
+import java.util.Set;
+
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.Country;
+
+public interface CantonRepository extends BaseDomainRepository<Canton> {
+
+    Optional<Canton> findByAbbreviation(String abbreviation);
+
+    Optional<Canton> findByName(String name);
+
+    Set<Canton> findAllByCountry(Country country);
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/repository/CityRepository.java

@@ -0,0 +1,18 @@
+package org.example.silenum.mockito.domain.repository;
+
+import java.util.Optional;
+import java.util.Set;
+
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+
+public interface CityRepository extends BaseDomainRepository<City> {
+
+    Optional<City> findByName(String name);
+
+    Set<City> findAllByCanton(Canton canton);
+
+    Set<City> findAllByCountry(Country country);
+
+}

mockito/src/main/java/org/example/silenum/mockito/domain/repository/CountryRepository.java

@@ -0,0 +1,13 @@
+package org.example.silenum.mockito.domain.repository;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.domain.entity.Country;
+
+public interface CountryRepository extends BaseDomainRepository<Country> {
+
+    Optional<Country> findByName(String name);
+
+    Optional<Country> findByCode(String code);
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/Application.java

@@ -0,0 +1,13 @@
+package org.example.silenum.mockito.infrastructure;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/configuration/business/ServiceConfiguration.java

@@ -0,0 +1,37 @@
+package org.example.silenum.mockito.infrastructure.configuration.business;
+
+import org.example.silenum.mockito.business.service.CantonService;
+import org.example.silenum.mockito.business.service.CantonServiceImpl;
+import org.example.silenum.mockito.business.service.CityService;
+import org.example.silenum.mockito.business.service.CityServiceImpl;
+import org.example.silenum.mockito.business.service.CountryService;
+import org.example.silenum.mockito.business.service.CountryServiceImpl;
+import org.example.silenum.mockito.domain.repository.CantonRepository;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.example.silenum.mockito.domain.repository.CountryRepository;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ServiceConfiguration {
+
+    @Bean
+    public CityService cityService(CityRepository cityRepository) {
+        return new CityServiceImpl(cityRepository);
+    }
+
+    @Bean
+    public CantonService cantonService(
+            CantonRepository cantonRepository,
+            CityService cityService) {
+        return new CantonServiceImpl(cantonRepository, cityService);
+    }
+
+    @Bean
+    public CountryService countryService(
+            CountryRepository countryRepository,
+            CantonService cantonService) {
+        return new CountryServiceImpl(countryRepository, cantonService);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/configuration/mapper/MapperConfiguration.java

@@ -0,0 +1,27 @@
+package org.example.silenum.mockito.infrastructure.configuration.mapper;
+
+import org.example.silenum.mockito.infrastructure.mapper.CantonMapper;
+import org.example.silenum.mockito.infrastructure.mapper.CityMapper;
+import org.example.silenum.mockito.infrastructure.mapper.CountryMapper;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class MapperConfiguration {
+
+    @Bean
+    public CityMapper cityMapper(CantonMapper cantonMapper) {
+        return new CityMapper(cantonMapper);
+    }
+
+    @Bean
+    public CantonMapper cantonMapper(CountryMapper countryMapper) {
+        return new CantonMapper(countryMapper);
+    }
+
+    @Bean
+    public CountryMapper countryMapper() {
+        return new CountryMapper();
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/configuration/persistence/PersistenceConfiguration.java

@@ -0,0 +1,24 @@
+package org.example.silenum.mockito.infrastructure.configuration.persistence;
+
+import java.time.ZonedDateTime;
+import java.util.Optional;
+
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.auditing.DateTimeProvider;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@Configuration
+@EnableJpaAuditing(dateTimeProviderRef = "zonedDateTimeProvider")
+@EntityScan(basePackages = "org.example.silenum.mockito.infrastructure.database.entity")
+@EnableJpaRepositories(basePackages = "org.example.silenum.mockito.infrastructure.database.repository")
+public class PersistenceConfiguration {
+
+    @Bean(name = "zonedDateTimeProvider")
+    public DateTimeProvider dateTimeProvider() {
+        return () -> Optional.of(ZonedDateTime.now());
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/configuration/repository/RepositoryConfiguration.java

@@ -0,0 +1,42 @@
+package org.example.silenum.mockito.infrastructure.configuration.repository;
+
+import org.example.silenum.mockito.domain.repository.CantonRepository;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.example.silenum.mockito.domain.repository.CountryRepository;
+import org.example.silenum.mockito.infrastructure.database.repository.CantonEntityRepository;
+import org.example.silenum.mockito.infrastructure.database.repository.CityEntityRepository;
+import org.example.silenum.mockito.infrastructure.database.repository.CountryEntityRepository;
+import org.example.silenum.mockito.infrastructure.mapper.CantonMapper;
+import org.example.silenum.mockito.infrastructure.mapper.CityMapper;
+import org.example.silenum.mockito.infrastructure.mapper.CountryMapper;
+import org.example.silenum.mockito.infrastructure.repository.CantonRepositoryImpl;
+import org.example.silenum.mockito.infrastructure.repository.CityRepositoryImpl;
+import org.example.silenum.mockito.infrastructure.repository.CountryRepositoryImpl;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RepositoryConfiguration {
+
+    @Bean
+    public CityRepository cityRepository(
+            CityEntityRepository cityEntityRepository,
+            CityMapper cityMapper) {
+        return new CityRepositoryImpl(cityEntityRepository, cityMapper);
+    }
+
+    @Bean
+    public CantonRepository cantonRepository(
+            CantonEntityRepository cantonEntityRepository,
+            CantonMapper cantonMapper) {
+        return new CantonRepositoryImpl(cantonEntityRepository, cantonMapper);
+    }
+
+    @Bean
+    public CountryRepository countryRepository(
+            CountryEntityRepository countryEntityRepository,
+            CountryMapper countryMapper) {
+        return new CountryRepositoryImpl(countryEntityRepository, countryMapper);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/entity/BaseEntity.java

@@ -0,0 +1,90 @@
+package org.example.silenum.mockito.infrastructure.database.entity;
+
+import java.time.ZonedDateTime;
+
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import javax.persistence.Version;
+
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedDate;
+
+/**
+ * This class defines the common fields for each entity to be persisted.
+ */
+@MappedSuperclass
+public abstract class BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    @Version
+    private Integer version;
+
+    @CreatedDate
+    private ZonedDateTime created;
+
+    @LastModifiedDate
+    private ZonedDateTime updated;
+
+    protected BaseEntity() {
+    }
+
+    protected BaseEntity(Builder<?> builder) {
+        this.id = builder.id;
+        this.version = builder.version;
+        this.created = builder.created;
+        this.updated = builder.updated;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Integer getVersion() {
+        return version;
+    }
+
+    public ZonedDateTime getCreated() {
+        return created;
+    }
+
+    public ZonedDateTime getUpdated() {
+        return updated;
+    }
+
+    public abstract static class Builder<T extends Builder<T>> {
+
+        private Long id;
+        private Integer version;
+        private ZonedDateTime created;
+        private ZonedDateTime updated;
+
+        public T id(Long id) {
+            this.id = id;
+            return this.getThis();
+        }
+
+        public T version(Integer version) {
+            this.version = version;
+            return this.getThis();
+        }
+
+        public T created(ZonedDateTime created) {
+            this.created = created;
+            return this.getThis();
+        }
+
+        public T updated(ZonedDateTime updated) {
+            this.updated = updated;
+            return this.getThis();
+        }
+
+        protected abstract T getThis();
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/entity/CantonEntity.java

@@ -0,0 +1,122 @@
+package org.example.silenum.mockito.infrastructure.database.entity;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.EntityListeners;
+import javax.persistence.FetchType;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+@Entity
+@Table(name = "canton")
+@EntityListeners(AuditingEntityListener.class)
+public class CantonEntity extends BaseEntity {
+
+    @Column(nullable = false, unique = true)
+    private String name;
+
+    @Column(nullable = false, unique = true)
+    private String abbreviation;
+
+    @OneToMany(mappedBy = "canton", cascade = CascadeType.REMOVE)
+    private Set<CityEntity> cities = new HashSet<>();
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "countryId")
+    private CountryEntity country;
+
+    public CantonEntity() {
+        // Default constructor is required for JPA.
+    }
+
+    private CantonEntity(Builder builder) {
+        super(builder);
+        name = builder.name;
+        abbreviation = builder.abbreviation;
+        cities = builder.cities;
+        country = builder.country;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static Builder builder(CantonEntity copy) {
+        Builder builder = new Builder();
+        builder.id(copy.getId());
+        builder.version(copy.getVersion());
+        builder.created(copy.getCreated());
+        builder.updated(copy.getUpdated());
+        builder.name = copy.getName();
+        builder.abbreviation = copy.getAbbreviation();
+        builder.cities = copy.getCities();
+        builder.country = copy.getCountry();
+        return builder;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAbbreviation() {
+        return abbreviation;
+    }
+
+    public Set<CityEntity> getCities() {
+        return cities;
+    }
+
+    public CountryEntity getCountry() {
+        return country;
+    }
+
+    public static final class Builder extends BaseEntity.Builder<Builder> {
+
+        private String name;
+        private String abbreviation;
+        private Set<CityEntity> cities;
+        private CountryEntity country;
+
+        private Builder() {
+        }
+
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder abbreviation(String abbreviation) {
+            this.abbreviation = abbreviation;
+            return this;
+        }
+
+        public Builder cities(Set<CityEntity> cities) {
+            this.cities = cities;
+            return this;
+        }
+
+        public Builder country(CountryEntity country) {
+            this.country = country;
+            return this;
+        }
+
+        public CantonEntity build() {
+            return new CantonEntity(this);
+        }
+
+        @Override
+        protected Builder getThis() {
+            return this;
+        }
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/entity/CityEntity.java

@@ -0,0 +1,88 @@
+package org.example.silenum.mockito.infrastructure.database.entity;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.EntityListeners;
+import javax.persistence.FetchType;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+@Entity
+@Table(name = "city")
+@EntityListeners(AuditingEntityListener.class)
+public class CityEntity extends BaseEntity {
+
+    @Column(nullable = false)
+    private String name;
+
+    // Note: This is the owning site (child) of the relation canton-city
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "cantonId")
+    private CantonEntity canton;
+
+    public CityEntity() {
+        // Default constructor is required for JPA.
+    }
+
+    private CityEntity(Builder builder) {
+        super(builder);
+        name = builder.name;
+        canton = builder.canton;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static Builder builder(CityEntity copy) {
+        Builder builder = new Builder();
+        builder.id(copy.getId());
+        builder.version(copy.getVersion());
+        builder.created(copy.getCreated());
+        builder.updated(copy.getUpdated());
+        builder.name = copy.getName();
+        builder.canton = copy.getCanton();
+        return builder;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public CantonEntity getCanton() {
+        return canton;
+    }
+
+    public static final class Builder extends BaseEntity.Builder<Builder> {
+
+        private String name;
+        private CantonEntity canton;
+
+        private Builder() {
+        }
+
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder canton(CantonEntity canton) {
+            this.canton = canton;
+            return this;
+        }
+
+        public CityEntity build() {
+            return new CityEntity(this);
+        }
+
+        @Override
+        protected Builder getThis() {
+            return this;
+        }
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/entity/CountryEntity.java

@@ -0,0 +1,104 @@
+package org.example.silenum.mockito.infrastructure.database.entity;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.EntityListeners;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+@Entity
+@Table(name = "country")
+@EntityListeners(AuditingEntityListener.class)
+public class CountryEntity extends BaseEntity {
+
+    @Column(nullable = false, unique = true)
+    private String name;
+
+    @Column(nullable = false, unique = true)
+    private String code;
+
+    // Note: This is the inverse site (parent) of the relation country-canton
+    @OneToMany(mappedBy = "country", cascade = CascadeType.REMOVE)
+    private Set<CantonEntity> cantons = new HashSet<>();
+
+    public CountryEntity() {
+        // Default constructor is required for JPA.
+    }
+
+    private CountryEntity(Builder builder) {
+        super(builder);
+        name = builder.name;
+        code = builder.code;
+        cantons = builder.cantons;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static Builder builder(CountryEntity copy) {
+        Builder builder = new Builder();
+        builder.id(copy.getId());
+        builder.version(copy.getVersion());
+        builder.created(copy.getCreated());
+        builder.updated(copy.getUpdated());
+        builder.name = copy.getName();
+        builder.code = copy.getCode();
+        builder.cantons = copy.getCantons();
+        return builder;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public Set<CantonEntity> getCantons() {
+        return cantons;
+    }
+
+    public static final class Builder extends BaseEntity.Builder<Builder> {
+
+        private String name;
+        private String code;
+        private Set<CantonEntity> cantons;
+
+        private Builder() {
+        }
+
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder code(String code) {
+            this.code = code;
+            return this;
+        }
+
+        public Builder cantons(Set<CantonEntity> cantons) {
+            this.cantons = cantons;
+            return this;
+        }
+
+        public CountryEntity build() {
+            return new CountryEntity(this);
+        }
+
+        @Override
+        protected Builder getThis() {
+            return this;
+        }
+
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/repository/BaseEntityRepository.java

@@ -0,0 +1,12 @@
+package org.example.silenum.mockito.infrastructure.database.repository;
+
+import org.example.silenum.mockito.infrastructure.database.entity.BaseEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * Intermediate repository for {@link BaseEntity}
+ * It defines {@link Long} as default type for the ID of the {@link BaseEntity}
+ */
+public interface BaseEntityRepository<T extends BaseEntity> extends JpaRepository<T, Long> {
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/repository/CantonEntityRepository.java

@@ -0,0 +1,18 @@
+package org.example.silenum.mockito.infrastructure.database.repository;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.example.silenum.mockito.infrastructure.database.entity.CantonEntity;
+
+public interface CantonEntityRepository extends BaseEntityRepository<CantonEntity> {
+
+    Optional<CantonEntity> findByNameIgnoreCase(String name);
+
+    Optional<CantonEntity> findByAbbreviationIgnoreCase(String abbreviation);
+
+    List<CantonEntity> findAllByCountryNameIgnoreCase(String countryName);
+
+    List<CantonEntity> findAllByCountryId(Long countryId);
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/repository/CityEntityRepository.java

@@ -0,0 +1,16 @@
+package org.example.silenum.mockito.infrastructure.database.repository;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.example.silenum.mockito.infrastructure.database.entity.CityEntity;
+
+public interface CityEntityRepository extends BaseEntityRepository<CityEntity> {
+
+    Optional<CityEntity> findByNameIgnoreCase(String name);
+
+    List<CityEntity> findAllByCantonId(Long cantonId);
+
+    List<CityEntity> findAllByCanton_Country_Id(Long countryId);
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/database/repository/CountryEntityRepository.java

@@ -0,0 +1,13 @@
+package org.example.silenum.mockito.infrastructure.database.repository;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.infrastructure.database.entity.CountryEntity;
+
+public interface CountryEntityRepository extends BaseEntityRepository<CountryEntity> {
+
+    Optional<CountryEntity> findByNameIgnoreCase(String name);
+
+    Optional<CountryEntity> findByCodeIgnoreCase(String code);
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/mapper/CantonMapper.java

@@ -0,0 +1,41 @@
+package org.example.silenum.mockito.infrastructure.mapper;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.infrastructure.database.entity.CantonEntity;
+
+public final class CantonMapper implements Mapper<Canton, CantonEntity> {
+
+    private final CountryMapper countryMapper;
+
+    public CantonMapper(CountryMapper countryMapper) {
+        this.countryMapper = countryMapper;
+    }
+
+    @Override
+    public Optional<Canton> toDomain(CantonEntity entity) {
+        return entity == null ? Optional.empty() : Optional.of(Canton.builder()
+                .id(entity.getId())
+                .version(entity.getVersion())
+                .created(entity.getCreated())
+                .updated(entity.getUpdated())
+                .setName(entity.getName())
+                .setAbbreviation(entity.getAbbreviation())
+                .build());
+    }
+
+    @Override
+    public CantonEntity toEntity(Canton canton) {
+        return canton == null ? null : CantonEntity.builder()
+                .id(canton.getId())
+                .version(canton.getVersion())
+                .created(canton.getCreated())
+                .updated(canton.getUpdated())
+                .name(canton.getName())
+                .abbreviation(canton.getAbbreviation())
+                .country(countryMapper.toEntity(canton.getCountry()))
+                .build();
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/mapper/CityMapper.java

@@ -0,0 +1,39 @@
+package org.example.silenum.mockito.infrastructure.mapper;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.infrastructure.database.entity.CityEntity;
+
+public final class CityMapper implements Mapper<City, CityEntity> {
+
+    private final CantonMapper cantonMapper;
+
+    public CityMapper(CantonMapper cantonMapper) {
+        this.cantonMapper = cantonMapper;
+    }
+
+    @Override
+    public Optional<City> toDomain(CityEntity entity) {
+        return entity == null ? Optional.empty() : Optional.of(City.builder()
+                .id(entity.getId())
+                .version(entity.getVersion())
+                .created(entity.getCreated())
+                .updated(entity.getUpdated())
+                .setName(entity.getName())
+                .build());
+    }
+
+    @Override
+    public CityEntity toEntity(City city) {
+        return city == null ? null : CityEntity.builder()
+                .id(city.getId())
+                .version(city.getVersion())
+                .created(city.getCreated())
+                .updated(city.getUpdated())
+                .name(city.getName())
+                .canton(cantonMapper.toEntity(city.getCanton()))
+                .build();
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/mapper/CountryMapper.java

@@ -0,0 +1,34 @@
+package org.example.silenum.mockito.infrastructure.mapper;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.infrastructure.database.entity.CountryEntity;
+
+public final class CountryMapper implements Mapper<Country, CountryEntity> {
+
+    @Override
+    public Optional<Country> toDomain(CountryEntity entity) {
+        return entity == null ? Optional.empty() : Optional.of(Country.builder()
+                .id(entity.getId())
+                .version(entity.getVersion())
+                .created(entity.getCreated())
+                .updated(entity.getUpdated())
+                .setName(entity.getName())
+                .setCode(entity.getCode())
+                .build());
+    }
+
+    @Override
+    public CountryEntity toEntity(Country domain) {
+        return domain == null ? null : CountryEntity.builder()
+                .id(domain.getId())
+                .version(domain.getVersion())
+                .created(domain.getCreated())
+                .updated(domain.getUpdated())
+                .name(domain.getName())
+                .code(domain.getCode())
+                .build();
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/mapper/Mapper.java

@@ -0,0 +1,36 @@
+package org.example.silenum.mockito.infrastructure.mapper;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import org.example.silenum.mockito.domain.entity.BaseDomain;
+import org.example.silenum.mockito.infrastructure.database.entity.BaseEntity;
+
+public interface Mapper<D extends BaseDomain, E extends BaseEntity> {
+
+    default Optional<D> toDomain(Optional<E> entity) {
+        return entity.isEmpty() ? Optional.empty() : toDomain(entity.get());
+    }
+
+    Optional<D> toDomain(E entity);
+
+    default Set<D> toDomain(Collection<E> entities) {
+        return entities == null ? Collections.emptySet() : entities.stream()
+                .map(this::toDomain)
+                .filter(Optional::isPresent)
+                .map(Optional::get)
+                .collect(Collectors.toSet());
+    }
+
+    E toEntity(D domain);
+
+    default Set<E> toEntity(Collection<D> domains) {
+        return domains == null ? Collections.emptySet() : domains.stream()
+                .map(this::toEntity)
+                .collect(Collectors.toSet());
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/repository/CantonRepositoryImpl.java

@@ -0,0 +1,63 @@
+package org.example.silenum.mockito.infrastructure.repository;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CantonRepository;
+import org.example.silenum.mockito.infrastructure.database.entity.CantonEntity;
+import org.example.silenum.mockito.infrastructure.database.repository.CantonEntityRepository;
+import org.example.silenum.mockito.infrastructure.mapper.CantonMapper;
+
+public class CantonRepositoryImpl implements CantonRepository {
+
+    private final CantonEntityRepository cantonEntityRepository;
+    private final CantonMapper cantonMapper;
+
+    public CantonRepositoryImpl(
+            CantonEntityRepository cantonEntityRepository,
+            CantonMapper cantonMapper) {
+        this.cantonEntityRepository = cantonEntityRepository;
+        this.cantonMapper = cantonMapper;
+    }
+
+    @Override
+    public Optional<Canton> save(Canton domain) {
+        CantonEntity cantonEntity = cantonMapper.toEntity(domain);
+        cantonEntity = cantonEntityRepository.save(cantonEntity);
+        return cantonMapper.toDomain(cantonEntity);
+    }
+
+    @Override
+    public Optional<Canton> find(Long id) {
+        Optional<CantonEntity> cantonEntity = cantonEntityRepository.findById(id);
+        return cantonMapper.toDomain(cantonEntity);
+    }
+
+    @Override
+    public void delete(Canton domain) {
+        Optional<CantonEntity> cantonEntity = cantonEntityRepository.findById(domain.getId());
+        cantonEntity.ifPresent(cantonEntityRepository::delete);
+    }
+
+    @Override
+    public Optional<Canton> findByAbbreviation(String abbreviation) {
+        Optional<CantonEntity> cantonEntity = cantonEntityRepository.findByAbbreviationIgnoreCase(abbreviation);
+        return cantonMapper.toDomain(cantonEntity);
+    }
+
+    @Override
+    public Optional<Canton> findByName(String name) {
+        Optional<CantonEntity> cantonEntity = cantonEntityRepository.findByNameIgnoreCase(name);
+        return cantonMapper.toDomain(cantonEntity);
+    }
+
+    @Override
+    public Set<Canton> findAllByCountry(Country country) {
+        List<CantonEntity> cantonEntities = cantonEntityRepository.findAllByCountryNameIgnoreCase(country.getName());
+        return cantonMapper.toDomain(cantonEntities);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/repository/CityRepositoryImpl.java

@@ -0,0 +1,64 @@
+package org.example.silenum.mockito.infrastructure.repository;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.example.silenum.mockito.infrastructure.database.entity.CityEntity;
+import org.example.silenum.mockito.infrastructure.database.repository.CityEntityRepository;
+import org.example.silenum.mockito.infrastructure.mapper.CityMapper;
+
+public class CityRepositoryImpl implements CityRepository {
+
+    private final CityEntityRepository cityEntityRepository;
+    private final CityMapper cityMapper;
+
+    public CityRepositoryImpl(
+            CityEntityRepository cityEntityRepository,
+            CityMapper cityMapper) {
+        this.cityEntityRepository = cityEntityRepository;
+        this.cityMapper = cityMapper;
+    }
+
+    @Override
+    public Optional<City> save(City domain) {
+        CityEntity cityEntity = cityMapper.toEntity(domain);
+        cityEntity = cityEntityRepository.save(cityEntity);
+        return cityMapper.toDomain(cityEntity);
+    }
+
+    @Override
+    public Optional<City> find(Long id) {
+        Optional<CityEntity> cityEntity = cityEntityRepository.findById(id);
+        return cityMapper.toDomain(cityEntity);
+    }
+
+    @Override
+    public void delete(City domain) {
+        Optional<CityEntity> cantonEntity = cityEntityRepository.findById(domain.getId());
+        cantonEntity.ifPresent(cityEntityRepository::delete);
+    }
+
+    @Override
+    public Optional<City> findByName(String name) {
+        Optional<CityEntity> cityEntity = cityEntityRepository.findByNameIgnoreCase(name);
+        return cityMapper.toDomain(cityEntity);
+    }
+
+    @Override
+    public Set<City> findAllByCanton(Canton canton) {
+        List<CityEntity> cityEntities = cityEntityRepository.findAllByCantonId(canton.getId());
+        return cityMapper.toDomain(cityEntities);
+    }
+
+    @Override
+    public Set<City> findAllByCountry(Country country) {
+        List<CityEntity> cities = cityEntityRepository.findAllByCanton_Country_Id(country.getId());
+        return cityMapper.toDomain(cities);
+    }
+
+}

mockito/src/main/java/org/example/silenum/mockito/infrastructure/repository/CountryRepositoryImpl.java

@@ -0,0 +1,54 @@
+package org.example.silenum.mockito.infrastructure.repository;
+
+import java.util.Optional;
+
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CountryRepository;
+import org.example.silenum.mockito.infrastructure.database.entity.CountryEntity;
+import org.example.silenum.mockito.infrastructure.database.repository.CountryEntityRepository;
+import org.example.silenum.mockito.infrastructure.mapper.CountryMapper;
+
+public class CountryRepositoryImpl implements CountryRepository {
+
+    private final CountryEntityRepository countryEntityRepository;
+    private final CountryMapper countryMapper;
+
+    public CountryRepositoryImpl(
+            CountryEntityRepository countryEntityRepository,
+            CountryMapper countryMapper) {
+        this.countryEntityRepository = countryEntityRepository;
+        this.countryMapper = countryMapper;
+    }
+
+    @Override
+    public Optional<Country> save(Country domain) {
+        CountryEntity countryEntity = countryMapper.toEntity(domain);
+        countryEntity = countryEntityRepository.save(countryEntity);
+        return countryMapper.toDomain(countryEntity);
+    }
+
+    @Override
+    public Optional<Country> find(Long id) {
+        Optional<CountryEntity> countryEntity = countryEntityRepository.findById(id);
+        return countryMapper.toDomain(countryEntity);
+    }
+
+    @Override
+    public void delete(Country domain) {
+        Optional<CountryEntity> countryEntity = countryEntityRepository.findById(domain.getId());
+        countryEntity.ifPresent(countryEntityRepository::delete);
+    }
+
+    @Override
+    public Optional<Country> findByName(String name) {
+        Optional<CountryEntity> countryEntity = countryEntityRepository.findByNameIgnoreCase(name);
+        return countryMapper.toDomain(countryEntity);
+    }
+
+    @Override
+    public Optional<Country> findByCode(String code) {
+        Optional<CountryEntity> countryEntity = countryEntityRepository.findByCodeIgnoreCase(code);
+        return countryMapper.toDomain(countryEntity);
+    }
+
+}

mockito/src/main/resources/application.yml

@@ -0,0 +1,11 @@
+spring:
+    datasource:
+        username: sa
+        password:
+        url: jdbc:h2:mem:world
+
+    jpa:
+        database-platform: org.hibernate.dialect.H2Dialect
+    h2:
+        console:
+            enabled: true

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTest.java

@@ -0,0 +1,131 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+class CityServiceImplTest {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityRepository = Mockito.mock(CityRepository.class);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void save() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.save(expected))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.save(expected);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.find(expected.getId());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        City expected = createCity();
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+    }
+
+    @Test
+    void findByName() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.findByName(expected.getName()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.findByName(expected.getName());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findByNameThrowsExceptionIfCityNameContainsIllegalCharacter() {
+        String cityName = "C!tyN@me";
+        Mockito.when(cityRepository.findByName(cityName))
+                .thenThrow(IllegalArgumentException.class);
+        Assertions.assertThrows(IllegalArgumentException.class, () -> cityService.findByName(cityName));
+    }
+
+    @Test
+    void findAllByCanton() {
+        City city = createCity();
+        Canton canton = city.getCanton();
+        Mockito.when(cityRepository.findAllByCanton(canton))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCanton(canton);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCountry() {
+        City city = createCity();
+        Country country = city.getCanton().getCountry();
+        Mockito.when(cityRepository.findAllByCountry(country))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCountry(country);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestMockitoAnnotationStyle.java

@@ -0,0 +1,125 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+class CityServiceImplTestMockitoAnnotationStyle {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    @Mock
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void save() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.save(expected))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.save(expected);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.find(expected.getId());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        City expected = createCity();
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+    }
+
+    @Test
+    void findByName() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.findByName(expected.getName()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.findByName(expected.getName());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCanton() {
+        City city = createCity();
+        Canton canton = city.getCanton();
+        Mockito.when(cityRepository.findAllByCanton(canton))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCanton(canton);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCountry() {
+        City city = createCity();
+        Country country = city.getCanton().getCountry();
+        Mockito.when(cityRepository.findAllByCountry(country))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCountry(country);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestMockitoDonts.java

@@ -0,0 +1,114 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+class CityServiceImplTestMockitoDonts {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    private CityRepository cityRepository;
+
+    // Helper
+    private City expected;
+
+    @BeforeEach
+    void setUp() {
+        expected = createCity();
+        cityRepository = Mockito.mock(CityRepository.class);
+        cityService = new CityServiceImpl(cityRepository);
+
+        Mockito.when(cityRepository.save(expected))
+                .thenReturn(Optional.of(expected));
+        Mockito.when(cityRepository.find(expected.getId()))
+                .thenReturn(Optional.of(expected));
+        Mockito.when(cityRepository.findByName(expected.getName()))
+                .thenReturn(Optional.of(expected));
+        Mockito.when(cityRepository.findAllByCanton(expected.getCanton()))
+                .thenReturn(Collections.singleton(expected));
+        Mockito.when(cityRepository.findAllByCountry(expected.getCanton().getCountry()))
+                .thenReturn(Collections.singleton(expected));
+    }
+
+    @Test
+    void save() throws ElementNotFoundException {
+        ReflectionAssert.assertReflectionEquals(expected, cityService.save(expected));
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        ReflectionAssert.assertReflectionEquals(expected, cityService.find(expected.getId()));
+    }
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+    }
+
+    @Test
+    void findByName() throws ElementNotFoundException {
+        ReflectionAssert.assertReflectionEquals(expected, cityService.findByName(expected.getName()));
+    }
+
+    @Test
+    void findAllByCanton() {
+        Set<City> expectedSet = Set.of(expected);
+        ReflectionAssert.assertReflectionEquals(expectedSet, cityService.findAllByCanton(expected.getCanton()));
+    }
+
+    @Test
+    void findAllByCountry() {
+        Set<City> expectedSet = Set.of(expected);
+        ReflectionAssert.assertReflectionEquals(expectedSet, cityService.findAllByCountry(expected.getCanton().getCountry()));
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestMockitoJUnitExtensionStyle.java

@@ -0,0 +1,127 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+@ExtendWith(MockitoExtension.class)
+class CityServiceImplTestMockitoJUnitExtensionStyle {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    @Mock
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void save() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.save(expected))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.save(expected);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.find(expected.getId());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        City expected = createCity();
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+    }
+
+    @Test
+    void findByName() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.findByName(expected.getName()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.findByName(expected.getName());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCanton() {
+        City city = createCity();
+        Canton canton = city.getCanton();
+        Mockito.when(cityRepository.findAllByCanton(canton))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCanton(canton);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCountry() {
+        City city = createCity();
+        Country country = city.getCanton().getCountry();
+        Mockito.when(cityRepository.findAllByCountry(country))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCountry(country);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestMockitoSpringStyle.java

@@ -0,0 +1,126 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mockito;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+@ExtendWith(SpringExtension.class)
+class CityServiceImplTestMockitoSpringStyle {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    @MockBean
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void save() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.save(expected))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.save(expected);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.find(expected.getId());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        City expected = createCity();
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+    }
+
+    @Test
+    void findByName() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.findByName(expected.getName()))
+                .thenReturn(Optional.of(expected));
+        City actual = cityService.findByName(expected.getName());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCanton() {
+        City city = createCity();
+        Canton canton = city.getCanton();
+        Mockito.when(cityRepository.findAllByCanton(canton))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCanton(canton);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void findAllByCountry() {
+        City city = createCity();
+        Country country = city.getCanton().getCountry();
+        Mockito.when(cityRepository.findAllByCountry(country))
+                .thenReturn(Collections.singleton(city));
+        Set<City> expected = Set.of(city);
+        Set<City> actual = cityService.findAllByCountry(country);
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestMultiWhenCalls.java

@@ -0,0 +1,92 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.Optional;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+class CityServiceImplTestMultiWhenCalls {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityRepository = Mockito.mock(CityRepository.class);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void failingTestWhenRelyingOnOrder() throws ElementNotFoundException {
+        long id = 1;
+        City one = createCity();
+        City two = createCity();
+        City three = createCity();
+        Mockito.when(cityRepository.find(id)).thenReturn(Optional.of(one));
+        Mockito.when(cityRepository.find(id)).thenReturn(Optional.of(two));
+        Mockito.when(cityRepository.find(id)).thenReturn(Optional.of(three));
+        ReflectionAssert.assertReflectionEquals(one, cityService.find(id));
+        ReflectionAssert.assertReflectionEquals(two, cityService.find(id));
+        ReflectionAssert.assertReflectionEquals(three, cityService.find(id));
+    }
+
+    @Test
+    void successfulTestOnMultipleCalls() throws ElementNotFoundException {
+        long id = 1;
+        City one = createCity();
+        City two = createCity();
+        City three = createCity();
+        Mockito.when(cityRepository.find(id)).thenReturn(Optional.of(one));
+        Mockito.when(cityRepository.find(id)).thenReturn(Optional.of(two));
+        Mockito.when(cityRepository.find(id)).thenReturn(Optional.of(three));
+        ReflectionAssert.assertReflectionEquals(three, cityService.find(id));
+        ReflectionAssert.assertReflectionEquals(three, cityService.find(id));
+        ReflectionAssert.assertReflectionEquals(three, cityService.find(id));
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestPlainMockito.java

@@ -0,0 +1,15 @@
+package org.example.silenum.mockito.business.service;
+
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.mockito.Mockito;
+
+public class CityServiceImplTestPlainMockito {
+
+    @BeforeEach
+    void setUp() {
+        CityRepository cityRepository = Mockito.mock(CityRepository.class);
+        CityService cityService = new CityServiceImpl(cityRepository);
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/business/service/CityServiceImplTestVoidApproachAndThenThrow.java

@@ -0,0 +1,83 @@
+package org.example.silenum.mockito.business.service;
+
+import java.time.ZonedDateTime;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+class CityServiceImplTestVoidApproachAndThenThrow {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityRepository = Mockito.mock(CityRepository.class);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId()))
+                .thenThrow(RuntimeException.class);
+        Assertions.assertThrows(RuntimeException.class, () -> cityRepository.find(expected.getId()));
+    }
+
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        City expected = createCity();
+        cityService.delete(expected);
+        // Causes a compiler error
+        // Mockito.when(cityRepository.delete()).thenThrow(RuntimeException.class);
+        Mockito.doThrow(RuntimeException.class).when(cityRepository).delete(expected);
+        Assertions.assertThrows(RuntimeException.class, () -> cityRepository.delete(expected));
+    }
+
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleDontMockCollections.java

@@ -0,0 +1,38 @@
+package org.example.silenum.mockito.examples;
+
+import java.time.ZonedDateTime;
+import java.util.List;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.domain.entity.City;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+public class ExampleDontMockCollections {
+
+    @Test
+    void mockList() {
+        List<City> cities = Mockito.mock(List.class);
+
+        City city = createCity();
+        City anotherCity = createCity();
+
+        Mockito.when(cities.get(0)).thenReturn(city);
+        Mockito.when(cities.get(1)).thenReturn(anotherCity);
+
+        ReflectionAssert.assertReflectionEquals(city, cities.get(0));
+        ReflectionAssert.assertReflectionEquals(anotherCity, cities.get(1));
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleDontMockCollectionsResolution.java

@@ -0,0 +1,38 @@
+package org.example.silenum.mockito.examples;
+
+import java.time.ZonedDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.domain.entity.City;
+import org.junit.jupiter.api.Test;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+public class ExampleDontMockCollectionsResolution {
+
+    @Test
+    void mockListResolution() {
+        List<City> cities = new ArrayList<>();
+
+        City city = createCity();
+        City anotherCity = createCity();
+
+        cities.add(city);
+        cities.add(anotherCity);
+
+        ReflectionAssert.assertReflectionEquals(city, cities.get(0));
+        ReflectionAssert.assertReflectionEquals(anotherCity, cities.get(1));
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleDontMockValueTypes.java

@@ -0,0 +1,18 @@
+package org.example.silenum.mockito.examples;
+
+import org.example.silenum.mockito.domain.entity.City;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+public class ExampleDontMockValueTypes {
+
+    @Test
+    void mockCity() {
+        String cityName = "MockTown";
+        City mockTown = Mockito.mock(City.class);
+        Mockito.when(mockTown.getName()).thenReturn(cityName);
+        Assertions.assertEquals(cityName, mockTown.getName());
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleDontRecycleMocks.java

@@ -0,0 +1,43 @@
+package org.example.silenum.mockito.examples;
+
+import org.example.silenum.mockito.business.service.CityService;
+import org.example.silenum.mockito.business.service.CityServiceImpl;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+public class ExampleDontRecycleMocks {
+
+    private CityService cityService;
+
+    @Mock
+    private CityRepository cityRepository;
+
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        cityService = new CityServiceImpl(cityRepository);
+        // Mockito declarations for testOne
+        // ...
+        // Mockito declarations for testTwo
+        // ...
+    }
+
+    @Test
+    void testOne() {
+        // Test Case One
+    }
+
+    @Test
+    void testTwo() {
+        // Test Case Two
+    }
+
+    @Test
+    void test() {
+        // Another Test Case
+    }
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleDontRecycleMocksResolution.java

@@ -0,0 +1,52 @@
+package org.example.silenum.mockito.examples;
+
+import org.example.silenum.mockito.business.service.CityService;
+import org.example.silenum.mockito.business.service.CityServiceImpl;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+public class ExampleDontRecycleMocksResolution {
+
+    private CityService cityService;
+
+    @Mock
+    private CityRepository cityRepository;
+
+    void initializeScenarioOne() {
+        // Mockito behaviour declarations
+    }
+
+    void initializeScenarioTwo() {
+        // Mockito behaviour declarations
+    }
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void testOne() {
+        initializeScenarioOne();
+        // Test Case One
+    }
+
+    @Test
+    void testTwo() {
+        initializeScenarioTwo();
+        // Test Case Two
+    }
+
+    @Test
+    void testThree() {
+        initializeScenarioOne();
+        // ...
+        initializeScenarioTwo();
+        // ...
+        // Another Test Case
+    }
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleMockitoReset.java

@@ -0,0 +1,80 @@
+package org.example.silenum.mockito.examples;
+
+import java.time.ZonedDateTime;
+import java.util.Optional;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.business.service.CityService;
+import org.example.silenum.mockito.business.service.CityServiceImpl;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+public class ExampleMockitoReset {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityRepository = Mockito.mock(CityRepository.class);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void findAndDelete() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId())).thenReturn(Optional.of(expected));
+        City actual = cityService.find(expected.getId());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+        Mockito.reset(cityRepository);
+        Mockito.when(cityRepository.find(expected.getId())).thenReturn(Optional.empty());
+        Assertions.assertThrows(ElementNotFoundException.class, () -> cityService.find(expected.getId()));
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

mockito/src/test/java/org/example/silenum/mockito/examples/ExampleMockitoResetResolution.java

@@ -0,0 +1,89 @@
+package org.example.silenum.mockito.examples;
+
+import java.time.ZonedDateTime;
+import java.util.Optional;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.example.silenum.mockito.business.exception.ElementNotFoundException;
+import org.example.silenum.mockito.business.service.CityService;
+import org.example.silenum.mockito.business.service.CityServiceImpl;
+import org.example.silenum.mockito.domain.entity.Canton;
+import org.example.silenum.mockito.domain.entity.City;
+import org.example.silenum.mockito.domain.entity.Country;
+import org.example.silenum.mockito.domain.repository.CityRepository;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.unitils.reflectionassert.ReflectionAssert;
+
+public class ExampleMockitoResetResolution {
+
+    // System under Test (SuT)
+    private CityService cityService;
+
+    // Mocks
+    private CityRepository cityRepository;
+
+    @BeforeEach
+    void setUp() {
+        cityRepository = Mockito.mock(CityRepository.class);
+        cityService = new CityServiceImpl(cityRepository);
+    }
+
+    @Test
+    void find() throws ElementNotFoundException {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId())).thenReturn(Optional.of(expected));
+        City actual = cityService.find(expected.getId());
+        ReflectionAssert.assertReflectionEquals(expected, actual);
+    }
+
+    @Test
+    void delete() throws ElementNotFoundException {
+        City expected = createCity();
+        cityService.delete(expected);
+        Mockito.verify(cityRepository).delete(expected);
+    }
+
+    @Test
+    void findThrows() {
+        City expected = createCity();
+        Mockito.when(cityRepository.find(expected.getId())).thenReturn(Optional.empty());
+        Assertions.assertThrows(ElementNotFoundException.class, () -> cityService.find(expected.getId()));
+    }
+
+    private City createCity() {
+        return City.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Test City " + System.currentTimeMillis())
+                .setCanton(createCanton())
+                .build();
+    }
+
+    private Canton createCanton() {
+        return Canton.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Swiss Canton" + System.currentTimeMillis())
+                .setAbbreviation("SC-" + System.currentTimeMillis())
+                .setCountry(createCountry())
+                .build();
+    }
+
+    private Country createCountry() {
+        return Country.builder()
+                .id(System.currentTimeMillis())
+                .version(ThreadLocalRandom.current().nextInt())
+                .created(ZonedDateTime.now().minusDays(1L))
+                .updated(ZonedDateTime.now())
+                .setName("Switzerland")
+                .build();
+    }
+
+}

spring-boot/spring-boot-actuator/.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

spring-boot/spring-boot-actuator/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

spring-boot/spring-boot-actuator/README.md

@@ -0,0 +1,8 @@
+# Exploring a Spring Boot App with Actuator and jq
+
+Run the DemoApplication program.
+
+## Blog posts
+
+* [Exploring a Spring Boot App with Actuator and jq](https://reflectoring.io/exploring-a-spring-boot-app-with-actuator-and-jq)
+

spring-boot/spring-boot-actuator/mvnw

@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

spring-boot/spring-boot-actuator/mvnw.cmd

@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

spring-boot/spring-boot-actuator/pom.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.4.4</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>io.reflectoring.springboot.actuator</groupId>
+	<artifactId>actuator-examples</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>actuator-examples</name>
+	<description>Demo project for Spring Boot Actuator</description>
+	<properties>
+		<java.version>11</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<configuration>
+					<excludes>
+						<exclude>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+						</exclude>
+					</excludes>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/DemoApplication.java

@@ -0,0 +1,19 @@
+package io.reflectoring.springboot.actuator;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.metrics.buffering.BufferingApplicationStartup;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.scheduling.annotation.EnableScheduling;
+
+@SpringBootApplication
+@EnableScheduling
+@EnableCaching
+public class DemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication app = new SpringApplication(DemoApplication.class);
+		app.setApplicationStartup(new BufferingApplicationStartup(2048));
+		app.run(args);
+	}
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/controllers/OrderController.java

@@ -0,0 +1,75 @@
+package io.reflectoring.springboot.actuator.controllers;
+
+import io.micrometer.core.instrument.MeterRegistry;
+import io.reflectoring.springboot.actuator.model.Order;
+import io.reflectoring.springboot.actuator.model.OrderCreatedResponse;
+import io.reflectoring.springboot.actuator.model.OrderLineItem;
+import io.reflectoring.springboot.actuator.services.OrderService;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class OrderController {
+  @Autowired
+  private OrderService orderService;
+
+  @Autowired
+  private MeterRegistry registry;
+
+
+  @GetMapping("/{customerId}/orders")
+  public List<Order> getOrders(@PathVariable(value = "customerId") String customerId) {
+    System.out.println("Get orders requested for customer: " + customerId);
+
+    // Dummy order history for example purpose
+    OrderLineItem orderLineItem1 = new OrderLineItem();
+    orderLineItem1.setProductId(UUID.randomUUID().toString());
+    orderLineItem1.setQuantity(10);
+
+    OrderLineItem orderLineItem2 = new OrderLineItem();
+    orderLineItem2.setProductId(UUID.randomUUID().toString());
+    orderLineItem2.setQuantity(12);
+
+    OrderLineItem orderLineItem3 = new OrderLineItem();
+    orderLineItem3.setProductId(UUID.randomUUID().toString());
+    orderLineItem3.setQuantity(5);
+
+
+    OrderLineItem orderLineItem4 = new OrderLineItem();
+    orderLineItem4.setProductId(UUID.randomUUID().toString());
+    orderLineItem4.setQuantity(25);
+
+    OrderLineItem orderLineItem5 = new OrderLineItem();
+    orderLineItem5.setProductId(UUID.randomUUID().toString());
+    orderLineItem5.setQuantity(20);
+
+    OrderLineItem orderLineItem6 = new OrderLineItem();
+    orderLineItem6.setProductId(UUID.randomUUID().toString());
+    orderLineItem6.setQuantity(4);
+
+    return Arrays.asList(new Order(customerId, Arrays.asList(orderLineItem1, orderLineItem2)),
+        new Order(customerId, Arrays.asList(orderLineItem3)),
+        new Order(customerId, Arrays.asList(orderLineItem4, orderLineItem5, orderLineItem6)));
+  }
+
+  @PostMapping("/{customerId}/orders")
+  public OrderCreatedResponse placeOrder(@PathVariable(value = "customerId") String customerId,
+      @RequestBody Order order) {
+    System.out.println("Place order requested for customer: " + customerId);
+
+    registry.counter("orders.placed.counter").increment();
+
+    OrderCreatedResponse response = new OrderCreatedResponse();
+    response.setOrderId(UUID.randomUUID().toString());
+    response.setCustomerId(customerId);
+
+    return response;
+  }
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/controllers/PaymentController.java

@@ -0,0 +1,29 @@
+package io.reflectoring.springboot.actuator.controllers;
+
+import io.reflectoring.springboot.actuator.enums.PaymentStatus;
+import io.reflectoring.springboot.actuator.model.PaymentRequest;
+import io.reflectoring.springboot.actuator.model.PaymentResponse;
+import io.reflectoring.springboot.actuator.services.PaymentService;
+import java.util.UUID;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class PaymentController {
+  @Autowired
+  private PaymentService paymentService;
+
+  @PostMapping("/{orderId}/payment")
+  public PaymentResponse processPayments(@PathVariable String orderId, @RequestBody PaymentRequest request) {
+    System.out.println("Processing payment for order: " + orderId);
+
+    PaymentResponse response = new PaymentResponse();
+    response.setPaymentTransactionId(UUID.randomUUID().toString());
+    response.setStatus(PaymentStatus.SUCCESS);
+
+    return response;
+  }
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/controllers/ShippingController.java

@@ -0,0 +1,33 @@
+package io.reflectoring.springboot.actuator.controllers;
+
+import io.reflectoring.springboot.actuator.model.ShippingPriceResponse;
+import io.reflectoring.springboot.actuator.services.ShippingService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.event.ContextRefreshedEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ShippingController {
+  @Autowired
+  private ShippingService shippingService;
+
+  @GetMapping("/shipping-price")
+  public ShippingPriceResponse getShippingPrice(@RequestParam(value = "stateCode") String stateCode) {
+    System.out.println("Shipping price API called");
+     ShippingPriceResponse response = new ShippingPriceResponse();
+     response.setAmount(shippingService.getShippingPriceByState(stateCode));
+     response.setStateCode(stateCode);
+     return response;
+  }
+
+  @EventListener
+  void preloadCaches(ContextRefreshedEvent event) {
+    System.out.println("Preloading caches");
+    System.out.println(shippingService.getStates());
+    System.out.println(shippingService.getShippingPriceByState("TX"));
+    System.out.println(shippingService.getShippingPriceByState("VA"));
+  }
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/enums/PaymentMode.java

@@ -0,0 +1,5 @@
+package io.reflectoring.springboot.actuator.enums;
+
+public enum PaymentMode {
+  CASH, CREDIT_CARD, DEBIT_CARD, GIFT_CARD, COUPON
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/enums/PaymentStatus.java

@@ -0,0 +1,5 @@
+package io.reflectoring.springboot.actuator.enums;
+
+public enum PaymentStatus {
+  SUCCESS, FAILED, PENDING
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/model/Order.java

@@ -0,0 +1,15 @@
+package io.reflectoring.springboot.actuator.model;
+
+import java.util.List;
+import lombok.Data;
+
+@Data
+public class Order {
+  String customerId;
+  List<OrderLineItem> lineItems;
+
+  public Order(String customerId, List<OrderLineItem> lineItems) {
+    this.customerId = customerId;
+    this.lineItems = lineItems;
+  }
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/model/OrderCreatedResponse.java

@@ -0,0 +1,9 @@
+package io.reflectoring.springboot.actuator.model;
+
+import lombok.Data;
+
+@Data
+public class OrderCreatedResponse {
+  String customerId;
+  String orderId;
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/model/OrderLineItem.java

@@ -0,0 +1,9 @@
+package io.reflectoring.springboot.actuator.model;
+
+import lombok.Data;
+
+@Data
+public class OrderLineItem {
+  String productId;
+  Integer quantity;
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/model/PaymentRequest.java

@@ -0,0 +1,11 @@
+package io.reflectoring.springboot.actuator.model;
+
+import io.reflectoring.springboot.actuator.enums.PaymentMode;
+import lombok.Data;
+
+@Data
+public class PaymentRequest {
+  String orderId;
+  PaymentMode paymentMode;
+  double amount;
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/model/PaymentResponse.java

@@ -0,0 +1,10 @@
+package io.reflectoring.springboot.actuator.model;
+
+import io.reflectoring.springboot.actuator.enums.PaymentStatus;
+import lombok.Data;
+
+@Data
+public class PaymentResponse {
+  String paymentTransactionId;
+  PaymentStatus status;
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/model/ShippingPriceResponse.java

@@ -0,0 +1,9 @@
+package io.reflectoring.springboot.actuator.model;
+
+import lombok.Data;
+
+@Data
+public class ShippingPriceResponse {
+  String stateCode;
+  Double amount;
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/repositories/OrderRepository.java

@@ -0,0 +1,8 @@
+package io.reflectoring.springboot.actuator.repositories;
+
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class OrderRepository {
+
+}

spring-boot/spring-boot-actuator/src/main/java/io/reflectoring/springboot/actuator/repositories/PaymentRepository.java

@@ -0,0 +1,8 @@
+package io.reflectoring.springboot.actuator.repositories;
+
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class PaymentRepository {
+
+}