Merge pull request #273 from ajibade3210/nodeGraphql

Node graphql

core-java/junit5-parameterized-tests/.gitignore

@@ -0,0 +1,8 @@
+# Maven 
+target/
+.mvn/
+
+# eclipse project file
+.settings/
+.classpath
+.project

core-java/junit5-parameterized-tests/README.md

@@ -0,0 +1,3 @@
+# Related Blog Posts
+
+* [Parameterized tests with JUnit 5](https://reflectoring.io/junit5-parameterized-tests/)

core-java/junit5-parameterized-tests/mvnw

@@ -0,0 +1,287 @@
+#!/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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.1.1
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   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 "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$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
+        JAVA_HOME="`/usr/libexec/java_home`"; export JAVA_HOME
+      else
+        JAVA_HOME="/Library/Java/Home"; export JAVA_HOME
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$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 $mingw ; then
+  [ -n "$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="`\\unset -f command; \\command -v 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
+
+# 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
+  printf '%s' "$(cd "$basedir"; pwd)"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=$(find_maven_basedir "$(dirname $0)")
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}; export MAVEN_PROJECTBASEDIR
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$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 "$MVNW_REPOURL" ]; then
+      wrapperUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+    else
+      wrapperUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) wrapperUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $wrapperUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        QUIET="--quiet"
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+          QUIET=""
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget $QUIET "$wrapperUrl" -O "$wrapperJarPath"
+        else
+            wget $QUIET --http-user="$MVNW_USERNAME" --http-password="$MVNW_PASSWORD" "$wrapperUrl" -O "$wrapperJarPath"
+        fi
+        [ $? -eq 0 ] || rm -f "$wrapperJarPath"
+    elif command -v curl > /dev/null; then
+        QUIET="--silent"
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+          QUIET=""
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl $QUIET -o "$wrapperJarPath" "$wrapperUrl" -f -L
+        else
+            curl $QUIET --user "$MVNW_USERNAME:$MVNW_PASSWORD" -o "$wrapperJarPath" "$wrapperUrl" -f -L
+        fi
+        [ $? -eq 0 ] || rm -f "$wrapperJarPath"
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaSource="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaSource=`cygpath --path --windows "$javaSource"`
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaSource" ]; then
+            if [ ! -e "$javaClass" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaSource")
+            fi
+            if [ -e "$javaClass" ]; then
+                # Running the downloader
+                if [ "$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
+##########################################################################################
+
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$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 \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

core-java/junit5-parameterized-tests/mvnw.cmd

@@ -0,0 +1,187 @@
+@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 Apache Maven Wrapper startup batch script, version 3.1.1
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@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 "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\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 WRAPPER_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET WRAPPER_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 WRAPPER_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %WRAPPER_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('%WRAPPER_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 "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\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%
+
+cmd /C exit /B %ERROR_CODE%

core-java/junit5-parameterized-tests/pom.xml

@@ -0,0 +1,33 @@
+<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>
+	<groupId>io.refactoring</groupId>
+	<artifactId>junit5-parameterized-tests</artifactId>
+	<version>1.0.0-SNAPSHOT</version>
+	<properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        
+		<junit-jupiter-params.version>5.9.2</junit-jupiter-params.version>
+		<commons-lang3.version>3.12.0</commons-lang3.version>
+		<assertj-core>3.24.1</assertj-core>
+	</properties>
+    
+	<dependencies>
+		<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-params -->
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-params</artifactId>
+			<version>${junit-jupiter-params.version}</version>
+			<scope>test</scope>
+		</dependency>
+		
+		<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
+		<dependency>
+			<groupId>org.apache.commons</groupId>
+			<artifactId>commons-lang3</artifactId>
+			<version>${commons-lang3.version}</version>
+		</dependency>
+		
+	</dependencies>
+	
+</project>

core-java/junit5-parameterized-tests/src/test/java/source/argument/conversion/ArgumentConversionTest.java

@@ -0,0 +1,43 @@
+package source.argument.conversion;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import java.time.temporal.ChronoUnit;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.converter.ConvertWith;
+import org.junit.jupiter.params.provider.ValueSource;
+
+public class ArgumentConversionTest {
+
+	@ParameterizedTest
+	@ValueSource(ints = { 2, 4 })
+	void checkWideningArgumentConversion(long number) {
+		assertEquals(0, number % 2);
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@ValueSource(strings = "DAYS")
+	void checkImplicitArgumentConversion(ChronoUnit argument) {
+		assertNotNull(argument.name());
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@ValueSource(strings = { "Name1", "Name2" })
+	void checkImplicitFallbackArgumentConversion(Person person) {
+		assertNotNull(person.getName());
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@ValueSource(ints = { 100 })
+	void checkExplicitArgumentConversion(@ConvertWith(StringSimpleArgumentConverter.class) String argument) {
+		assertEquals("100", argument);
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/argument/conversion/Person.java

@@ -0,0 +1,18 @@
+package source.argument.conversion;
+
+public class Person {
+
+	private String name;
+
+	public Person(String name) {
+		this.name = name;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/argument/conversion/StringSimpleArgumentConverter.java

@@ -0,0 +1,13 @@
+package source.argument.conversion;
+
+import org.junit.jupiter.params.converter.ArgumentConversionException;
+import org.junit.jupiter.params.converter.SimpleArgumentConverter;
+
+public class StringSimpleArgumentConverter extends SimpleArgumentConverter {
+
+	@Override
+	protected Object convert(Object source, Class<?> targetType) throws ArgumentConversionException {
+		return String.valueOf(source);
+	}
+
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/ArgumentsSourceTest.java

@@ -0,0 +1,39 @@
+package source.arguments;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.stream.Stream;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.ArgumentsProvider;
+import org.junit.jupiter.params.provider.ArgumentsSource;
+
+public class ArgumentsSourceTest {
+
+	@ParameterizedTest
+	@ArgumentsSource(ExternalArgumentsProvider.class)
+	void checkExternalArgumentsSource(int number, String expected) {
+		assertEquals(StringUtils.equals(expected, "even") ? 0 : 1, number % 2,
+				"Supplied number " + number + " is not an " + expected + " number");
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@ArgumentsSource(NestedArgumentsProvider.class)
+	void checkNestedArgumentsSource(int number, String expected) {
+		assertEquals(StringUtils.equals(expected, "even") ? 0 : 1, number % 2,
+				"Supplied number " + number + " is not an " + expected + " number");
+	}
+
+	static class NestedArgumentsProvider implements ArgumentsProvider {
+
+		@Override
+		public Stream<? extends Arguments> provideArguments(ExtensionContext context) throws Exception {
+			return Stream.of(Arguments.of(2, "even"), Arguments.of(3, "odd"));
+		}
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/ExternalArgumentsProvider.java

@@ -0,0 +1,16 @@
+package source.arguments;
+
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.ArgumentsProvider;
+
+public class ExternalArgumentsProvider implements ArgumentsProvider {
+
+	@Override
+	public Stream<? extends Arguments> provideArguments(ExtensionContext context) throws Exception {
+		return Stream.of(Arguments.of(2, "even"), 
+						 Arguments.of(3, "odd"));
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/aggregator/ArgumentsAccessorTest.java

@@ -0,0 +1,18 @@
+package source.arguments.aggregator;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.aggregator.ArgumentsAccessor;
+import org.junit.jupiter.params.provider.CsvSource;
+
+public class ArgumentsAccessorTest {
+
+	@ParameterizedTest
+	@CsvSource({ "John, 20", 
+				 "Harry, 30" })
+	void checkArgumentsAccessor(ArgumentsAccessor arguments) {
+		Person person = new Person(arguments.getString(0), arguments.getInteger(1));
+		assertTrue(person.getAge() > 19, person.getName() + " is a teenager");
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/aggregator/ArgumentsAggregatorTest.java

@@ -0,0 +1,24 @@
+package source.arguments.aggregator;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.aggregator.AggregateWith;
+import org.junit.jupiter.params.provider.CsvSource;
+
+public class ArgumentsAggregatorTest {
+
+	@ParameterizedTest
+	@CsvSource({ "John, 20", "Harry, 30" })
+	void checkArgumentsAggregator(@AggregateWith(PersonArgumentsAggregator.class) Person person) {
+		assertTrue(person.getAge() > 19, person.getName() + " is a teenager");
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@CsvSource({ "John, 20", "Harry, 30" })
+	void checkCustomAggregatorAnnotation(@CsvToPerson Person person) {
+		assertTrue(person.getAge() > 19, person.getName() + " is a teenager");
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/aggregator/CsvToPerson.java

@@ -0,0 +1,15 @@
+package source.arguments.aggregator;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.junit.jupiter.params.aggregator.AggregateWith;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.PARAMETER)
+@AggregateWith(PersonArgumentsAggregator.class)
+public @interface CsvToPerson {
+
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/aggregator/Person.java

@@ -0,0 +1,30 @@
+package source.arguments.aggregator;
+
+public class Person {
+
+	private String name;
+
+	private int age;
+
+	public Person(String name, int age) {
+		this.name = name;
+		this.age = age;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public int getAge() {
+		return age;
+	}
+
+	public void setAge(int age) {
+		this.age = age;
+	}
+
+}

core-java/junit5-parameterized-tests/src/test/java/source/arguments/aggregator/PersonArgumentsAggregator.java

@@ -0,0 +1,16 @@
+package source.arguments.aggregator;
+
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.params.aggregator.ArgumentsAccessor;
+import org.junit.jupiter.params.aggregator.ArgumentsAggregationException;
+import org.junit.jupiter.params.aggregator.ArgumentsAggregator;
+
+public class PersonArgumentsAggregator implements ArgumentsAggregator {
+
+	@Override
+	public Object aggregateArguments(ArgumentsAccessor arguments, ParameterContext context)
+			throws ArgumentsAggregationException {
+		return new Person(arguments.getString(0), arguments.getInteger(1));
+	}
+
+}

core-java/junit5-parameterized-tests/src/test/java/source/assertj/AssertJTest.java

@@ -0,0 +1,27 @@
+package source.assertj;
+
+import java.util.function.Consumer;
+import java.util.stream.Stream;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class AssertJTest {
+
+	@ParameterizedTest
+	@MethodSource("checkNumberArgs")
+	void checkNumber(int number, Consumer<Integer> consumer) {
+
+		consumer.accept(number);
+	}
+
+	static Stream<Arguments> checkNumberArgs() {
+
+		Consumer<Integer> evenConsumer = i -> Assertions.assertThat(i % 2).isZero();
+		Consumer<Integer> oddConsumer = i -> Assertions.assertThat(i % 2).isEqualTo(1);
+
+		return Stream.of(Arguments.of(2, evenConsumer), Arguments.of(3, oddConsumer));
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/csv/CsvSourceTest.java

@@ -0,0 +1,17 @@
+package source.csv;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+public class CsvSourceTest {
+
+	@ParameterizedTest
+	@CsvSource({ "2, even", 
+				 "3, odd"})
+	void checkCsvSource(int number, String expected) {
+		assertEquals(StringUtils.equals(expected, "even") ? 0 : 1, number % 2);
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/csv/file/CsvFileSourceTest.java

@@ -0,0 +1,27 @@
+package source.csv.file;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvFileSource;
+
+public class CsvFileSourceTest {
+
+	@ParameterizedTest
+	@CsvFileSource(files = "src/test/resources/csv-file-source.csv", numLinesToSkip = 1)
+	void checkCsvFileSource(int number, String expected) {
+		assertEquals(StringUtils.equals(expected, "even") ? 0 : 1, number % 2);
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@CsvFileSource(files = "src/test/resources/csv-file-source_attributes.csv", 
+				   delimiterString = "|",
+				   lineSeparator = "||",
+				   numLinesToSkip = 1)
+	void checkCsvFileSourceAttributes(int number, String expected) {
+		assertEquals(StringUtils.equals(expected, "even") ? 0 : 1, number % 2);
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/enumeration/EnumSourceTest.java

@@ -0,0 +1,25 @@
+package source.enumeration;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import java.time.temporal.ChronoUnit;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EnumSource;
+
+public class EnumSourceTest {
+
+	@ParameterizedTest
+	@EnumSource(ChronoUnit.class)
+	void checkEnumSourceValue(ChronoUnit unit) {
+		assertNotNull(unit);
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@EnumSource(names = { "DAYS", "HOURS" })
+	void checkEnumSourceNames(ChronoUnit unit) {
+		assertNotNull(unit);
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/method/ExternalMethodSource.java

@@ -0,0 +1,11 @@
+package source.method;
+
+import java.util.stream.Stream;
+
+public class ExternalMethodSource {
+
+	static Stream<String> checkExternalMethodSourceArgs() {
+		return Stream.of("a1", "b2");
+	}
+
+}

core-java/junit5-parameterized-tests/src/test/java/source/method/ExternalMethodSourceTest.java

@@ -0,0 +1,17 @@
+package source.method;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class ExternalMethodSourceTest {
+
+	// Note: The test will try to load the external method
+	@ParameterizedTest
+	@MethodSource("source.method.ExternalMethodSource#checkExternalMethodSourceArgs")
+	void checkExternalMethodSource(String word) {
+		assertTrue(StringUtils.isAlphanumeric(word), "Supplied word is not alpha-numeric");
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/method/MethodSourceTest.java

@@ -0,0 +1,52 @@
+package source.method;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.stream.Stream;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class MethodSourceTest {
+
+	// Note: The test will try to load the supplied method
+	@ParameterizedTest
+	@MethodSource("checkExplicitMethodSourceArgs")
+	void checkExplicitMethodSource(String word) {
+		assertTrue(StringUtils.isAlphanumeric(word), "Supplied word is not alpha-numeric");
+	}
+
+	static Stream<String> checkExplicitMethodSourceArgs() {
+		return Stream.of("a1", "b2");
+	}
+
+	// ---------------------------------------------------------------------------
+
+	// Note: The test will search for the source method that matches the test-case
+	// method name
+	@ParameterizedTest
+	@MethodSource
+	void checkImplicitMethodSource(String word) {
+		assertTrue(StringUtils.isAlphanumeric(word), "Supplied word is not alpha-numeric");
+	}
+
+	static Stream<String> checkImplicitMethodSource() {
+		return Stream.of("a1", "b2");
+	}
+
+	// ---------------------------------------------------------------------------
+
+	// Note: The test will automatically map arguments based on the index
+	@ParameterizedTest
+	@MethodSource
+	void checkMultiArgumentsMethodSource(int number, String expected) {
+		assertEquals(StringUtils.equals(expected, "even") ? 0 : 1, number % 2);
+	}
+
+	static Stream<Arguments> checkMultiArgumentsMethodSource() {
+		return Stream.of(Arguments.of(2, "even"), Arguments.of(3, "odd"));
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/null_empty/NullEmptySourceTest.java

@@ -0,0 +1,44 @@
+package source.null_empty;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EmptySource;
+import org.junit.jupiter.params.provider.NullAndEmptySource;
+import org.junit.jupiter.params.provider.NullSource;
+import org.junit.jupiter.params.provider.ValueSource;
+
+public class NullEmptySourceTest {
+
+	@ParameterizedTest
+	@NullSource
+	void checkNull(String value) {
+		assertEquals(null, value);
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@EmptySource
+	void checkEmpty(String value) {
+		assertEquals("", value);
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@NullAndEmptySource
+	void checkNullAndEmpty(String value) {
+		assertTrue(value == null || value.isEmpty());
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@NullAndEmptySource
+	@ValueSource(strings = { " ", "   " })
+	void checkNullEmptyAndBlank(String value) {
+		assertTrue(value == null || value.isBlank());
+	}
+}

core-java/junit5-parameterized-tests/src/test/java/source/value/ValueSourceTest.java

@@ -0,0 +1,25 @@
+package source.value;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.apache.commons.lang3.StringUtils;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+public class ValueSourceTest {
+
+	@ParameterizedTest
+	@ValueSource(ints = { 2, 4 })
+	void checkEvenNumber(int number) {
+		assertEquals(0, number % 2, "Supplied number is not an even number");
+	}
+
+	// ---------------------------------------------------------------------------
+
+	@ParameterizedTest
+	@ValueSource(strings = { "a1", "b2" })
+	void checkAlphanumeric(String word) {
+		assertTrue(StringUtils.isAlphanumeric(word), "Supplied word is not alpha-numeric");
+	}
+}

core-java/junit5-parameterized-tests/src/test/resources/csv-file-source.csv

@@ -0,0 +1,3 @@
+NUMBER, ODD_EVEN
+2, even
+3, odd

core-java/junit5-parameterized-tests/src/test/resources/csv-file-source_attributes.csv

@@ -0,0 +1,3 @@
+|| NUMBER | ODD_EVEN ||
+|| 2 	  | even     ||
+|| 3 	  | odd	     ||

junit/junit5/junit5/pom.xml

@@ -0,0 +1,40 @@
+<?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</groupId>
+    <artifactId>junit5</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.9.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-params</artifactId>
+            <version>5.9.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-all</artifactId>
+            <version>1.3</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+</project>

junit/junit5/junit5/src/main/java/Cat.java

@@ -0,0 +1,14 @@
+public class Cat {
+    private String name;
+
+    public Cat(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Cat() {
+    }
+}

junit/junit5/junit5/src/main/java/GoldFish.java

@@ -0,0 +1,24 @@
+
+public class GoldFish {
+    private String name;
+    private int age;
+
+    public GoldFish(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+    public int calculateSpeed() {
+        if (age == 0){
+            throw new RuntimeException("This will fail :((");
+        }
+        return 10 / age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}

junit/junit5/junit5/src/test/java/CatTest.java

@@ -0,0 +1,71 @@
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static java.util.Arrays.asList;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.*;
+
+public class CatTest {
+    @Test
+    public void testMeow() {
+        String catName = "Stilla";
+        int catAge = 3;
+        boolean isNice = false;
+
+        assertThat(catName, equalTo("Stilla"));
+        assertThat(catAge, lessThan(5));
+        assertThat(isNice, is(false));
+    }
+
+    @Test
+    public void testCatInstance() {
+        Cat cat = new Cat();
+
+        assertThat(cat, instanceOf(Cat.class));
+    }
+
+    @Test
+    public void testSameCatInstance() {
+        Cat cat = new Cat();
+
+        assertThat(cat, sameInstance(cat));
+    }
+
+    @Test
+    public void testCollectionContaining() {
+        List<String> catNames = asList("Phibi", "Monica", "Stilla");
+
+        assertThat(catNames, hasItems("Monica", "Phibi"));
+        assertThat(catNames, not(hasItems("Melih")));
+    }
+
+    @Test
+    public void testCollectionSize() {
+        List<String> catNames = asList("Phibi", "Monica");
+
+        assertThat(catNames, hasSize(2));
+    }
+
+    @Test
+    public void testBean() {
+        Cat cat = new Cat("Mimi");
+
+        assertThat(cat, hasProperty("name", equalTo("Mimi")));
+    }
+
+    @Test
+    public void testStringEquality() {
+        String catNameInCaps = "RACHEL";
+
+        assertThat(catNameInCaps, equalToIgnoringCase("rachel"));
+    }
+
+    @Test
+    public void testStringContains() {
+        String catName = "Joey The Cute";
+
+        assertThat(catName, containsString("Cute"));
+    }
+
+}

junit/junit5/junit5/src/test/java/DogTest.java

@@ -0,0 +1,82 @@
+import org.junit.jupiter.api.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class DogTest {
+
+    @BeforeAll
+    public static void init() {
+        System.out.println("Doing stuff");
+    }
+
+    @BeforeEach
+    public void doEach() {
+        System.out.println("Hey Doggo");
+    }
+
+    @AfterAll
+    public static void finish() {
+        System.out.println("Finishing stuff");
+    }
+
+    @AfterEach
+    public void doAfterEach() {
+        System.out.println("Bye Doggo");
+    }
+
+    @Test
+    public void barkFailure() {
+        String expectedString = "Meow";
+        assertEquals(expectedString, "Woof");
+    }
+
+    @Disabled("Dog 1 please don't woof")
+    @Test
+    public void testBark1() {
+        String expectedString = "woof1";
+        assertEquals(expectedString, "woof1");
+        System.out.println("WOOF => 1");
+    }
+
+    @Test
+    public void testBark2() {
+        String expectedString = "woof2";
+        assertEquals(expectedString, "woof2");
+        System.out.println("WOOF => 2");
+    }
+
+    @Test
+    public void testNotBark() {
+        String unexpectedString = "";
+        assertNotEquals(unexpectedString, "woof");
+        System.out.println("Didn't woof!!");
+    }
+
+    @Test
+    public void nullCheck() {
+        Object dog = null;
+        assertNull(dog);
+        System.out.println("Null dog :(");
+    }
+
+    @Test
+    public void nonNullCheck() {
+        String dog = "Max";
+        assertNotNull(dog);
+        System.out.println("Hey I am " + dog);
+    }
+
+    @Test
+    public void trueCheck() {
+        int dogAge = 2;
+        assertTrue(dogAge < 5);
+        System.out.println("I am young :)");
+    }
+
+    @Test
+    public void falseCheck() {
+        int dogAge = 7;
+        assertFalse(dogAge < 5);
+        System.out.println("I am old :(");
+    }
+}

junit/junit5/junit5/src/test/java/GoldFishTest.java

@@ -0,0 +1,51 @@
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import java.util.stream.Stream;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalToIgnoringCase;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
+
+public class GoldFishTest {
+    @Test
+    public void testBooleanAssumption() {
+        GoldFish goldFish = new GoldFish("Windows Jelly", 1);
+
+        assumeTrue(System.getProperty("os.name").contains("Windows"));
+        assertThat(goldFish.getName(), equalToIgnoringCase("Windows Jelly"));
+    }
+
+    @Test
+    public void testBooleanAssert() {
+        GoldFish goldFish = new GoldFish("Windows Jelly", 1);
+
+        assert(System.getProperty("os.name").contains("Windows"));
+        assertThat(goldFish.getName(), equalToIgnoringCase("Windows Jelly"));
+    }
+
+    @Test
+    public void testException() {
+        GoldFish goldFish = new GoldFish("Goldy", 0);
+
+        RuntimeException exception = assertThrows(RuntimeException.class, goldFish::calculateSpeed);
+
+        assertThat(exception.getMessage(), equalToIgnoringCase("This will fail :(("));
+    }
+
+    @ParameterizedTest
+    @MethodSource("provideFishes")
+    public void parameterizedTest(GoldFish goldFish) {
+        assertTrue(goldFish.getAge() >= 1);
+    }
+
+    private static Stream<Arguments> provideFishes() {
+        return Stream.of(
+                Arguments.of(new GoldFish("Browny", 1)),
+                Arguments.of(new GoldFish("Greeny", 2))
+        );
+    }
+}

nodejs/graphql/student-register/README.md

@@ -0,0 +1 @@
+### NBuild Awesome CRUD APIs Using Apollo Server(Graphql), MongoDB and Node.Js Code Example

nodejs/graphql/student-register/index.js

@@ -0,0 +1,28 @@
+const { ApolloServer } = require("@apollo/server");
+const { startStandaloneServer } = require("@apollo/server/standalone");
+const mongoose = require("mongoose");
+const { resolvers } = require("./resolvers.js");
+const { typeDefs } = require("./models/typeDefs.js");
+
+const MONGO_URI = "mongodb://localhost:27017/student-register";
+
+// Database connection
+mongoose
+  .connect(MONGO_URI, {
+    useNewUrlParser: true,
+    useUnifiedTopology: true,
+  })
+  .then(() => {
+    console.log(`Db Connected`);
+  })
+  .catch(err => {
+    console.log(err.message);
+  });
+
+const server = new ApolloServer({ typeDefs, resolvers });
+
+startStandaloneServer(server, {
+  listen: { port: 4000 },
+}).then(({ url }) => {
+  console.log(`Server ready at ${url}`);
+});

nodejs/graphql/student-register/models/Student.js

@@ -0,0 +1,9 @@
+const mongoose = require("mongoose");
+
+const Student = mongoose.model("Student", {
+  firstName: String,
+  lastName: String,
+  age: Number,
+});
+
+module.exports = { Student };

nodejs/graphql/student-register/models/typeDefs.js

@@ -0,0 +1,23 @@
+const gql = require("graphql-tag");
+
+const typeDefs = gql`
+  type Query {
+    hello: String
+    welcome(name: String): String
+    students: [Student] #return array of students
+    student(id: ID): Student #return student by id
+  }
+  type Student {
+    id: ID
+    firstName: String
+    lastName: String
+    age: Int
+  }
+  type Mutation {
+    create(firstName: String, lastName: String, age: Int): Student
+    update(id: ID, firstName: String, lastName: String, age: Int): Student
+    delete(id: ID): Student
+  }
+`;
+
+module.exports = { typeDefs };

nodejs/graphql/student-register/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "graphql",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node index.js",
+    "dev": "nodemon index.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@apollo/server": "^4.4.1",
+    "graphql": "^16.6.0",
+    "graphql-tag": "^2.12.6",
+    "mongoose": "^7.0.1"
+  }
+}

nodejs/graphql/student-register/resolvers.js

@@ -0,0 +1,41 @@
+const { Student } = require("./models/Student.js");
+
+// GraphQL Resolvers
+const resolvers = {
+  Query: {
+    hello: () => "Hello from Reflectoring Blog",
+    welcome: (parent, args) => `Hello ${args.name}`,
+    students: async () => await Student.find({}), // return array of students
+    student: async (parent, args) => await Student.findById(args.id), // return student by id
+  },
+  Mutation: {
+    create: async (parent, args) => {
+      const { firstName, lastName, age } = args;
+      const newStudent = new Student({
+        firstName,
+        lastName,
+        age,
+      });
+      await newStudent.save();
+      return newStudent;
+    },
+    update: async (parent, args) => {
+      const { id } = args;
+      const updatedStudent = await Student.findByIdAndUpdate(id, args);
+      if (!updatedStudent) {
+        throw new Error(`Student with ID ${id} not found`);
+      }
+      return updatedStudent;
+    },
+    delete: async (parent, args) => {
+      const { id } = args;
+      const deletedStudent = await Student.findByIdAndDelete(id);
+      if (!deletedStudent) {
+        throw new Error(`Student with ID ${id} not found`);
+      }
+      return deletedStudent;
+    },
+  },
+};
+
+module.exports = { resolvers };

spring-boot/ioc-and-di/mvnw

@@ -0,0 +1,316 @@
+#!/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 "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$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="`\\unset -f command; \\command -v 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/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.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 "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$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 \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

spring-boot/ioc-and-di/mvnw.cmd

@@ -0,0 +1,188 @@
+@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    https://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 "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\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/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq 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%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.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 "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\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%
+
+cmd /C exit /B %ERROR_CODE%

spring-boot/ioc-and-di/pom.xml

@@ -0,0 +1,48 @@
+<?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>2.7.5</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>io.reflectoring</groupId>
+	<artifactId>ioc-and-di</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>ioc-and-di</name>
+	<description>IoC and DI</description>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-web</artifactId>
+			<version>6.0.0</version>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

spring-boot/ioc-and-di/src/main/java/io/reflectoring/iocanddi/IocAndDiApplication.java

@@ -0,0 +1,13 @@
+package io.reflectoring.iocanddi;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class IocAndDiApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(IocAndDiApplication.class, args);
+	}
+
+}

spring-boot/ioc-and-di/src/main/java/io/reflectoring/iocanddi/ShipmentConfiguration.java

@@ -0,0 +1,26 @@
+package io.reflectoring.iocanddi;
+
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+
+import java.time.Duration;
+
+@Configuration
+public class ShipmentConfiguration {
+
+    @Bean
+    public RestTemplate restTemplate() {
+        RestTemplate restTemplate =
+                new RestTemplateBuilder()
+                        .setConnectTimeout(Duration.ofMillis(1000))
+                        .setReadTimeout(Duration.ofMillis(2000))
+                        .build();
+        restTemplate.setUriTemplateHandler(new DefaultUriBuilderFactory("http://payment-service-uri:8080"));
+
+        return restTemplate;
+    }
+
+}

spring-boot/ioc-and-di/src/main/java/io/reflectoring/iocanddi/noDependencyInjection/ShippingService.java

@@ -0,0 +1,45 @@
+package io.reflectoring.iocanddi.noDependencyInjection;
+
+import org.springframework.boot.jdbc.DataSourceBuilder;
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+
+import javax.sql.DataSource;
+import java.time.Duration;
+
+public class ShippingService {
+    private RestTemplate restTemplate;
+    private DataSource dataSource;
+
+    public ShippingService() {
+        RestTemplate restTemplate =
+                new RestTemplateBuilder()
+                        .setConnectTimeout(Duration.ofMillis(1000))
+                        .setReadTimeout(Duration.ofMillis(2000))
+                        .build();
+        restTemplate.setUriTemplateHandler(new DefaultUriBuilderFactory("http://payment-service-uri:8080"));
+
+        this.restTemplate = restTemplate;
+
+        DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create();
+        dataSourceBuilder.driverClassName("org.h2.Driver");
+        dataSourceBuilder.url("jdbc:h2:file:C:/temp/test");
+        dataSourceBuilder.username("shipping-user");
+        dataSourceBuilder.password("superSecretPassword");
+        DataSource dataSource = dataSourceBuilder.build();
+
+        this.dataSource = dataSource;
+    }
+
+    private boolean packageIsShippable(String id) {
+        // business logic that make REST and database calls
+        return true;
+    }
+
+    public void ship(String shipmentId) {
+        if (packageIsShippable(shipmentId)) {
+            // ship the thing
+        }
+    }
+}

spring-boot/ioc-and-di/src/main/java/io/reflectoring/iocanddi/withDependencyInjection/DIContainer.java

@@ -0,0 +1,35 @@
+package io.reflectoring.iocanddi.withDependencyInjection;
+
+import org.springframework.boot.jdbc.DataSourceBuilder;
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+
+import javax.sql.DataSource;
+import java.time.Duration;
+
+public class DIContainer {
+    private RestTemplate getRestTemplate() {
+        RestTemplate restTemplate =
+                new RestTemplateBuilder()
+                        .setConnectTimeout(Duration.ofMillis(1000))
+                        .setReadTimeout(Duration.ofMillis(2000))
+                        .build();
+        restTemplate.setUriTemplateHandler(new DefaultUriBuilderFactory("http://payment-service-uri:8080"));
+
+        return restTemplate;
+    }
+
+    private DataSource getDataSource() {
+        DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create();
+        dataSourceBuilder.driverClassName("org.h2.Driver");
+        dataSourceBuilder.url("jdbc:h2:file:C:/temp/test");
+        dataSourceBuilder.username("shipping-user");
+        dataSourceBuilder.password("superSecretPassword");
+       return dataSourceBuilder.build();
+    }
+
+    public ShippingService getShipmentService() {
+        return new ShippingService(getRestTemplate(), getDataSource());
+    }
+}

spring-boot/ioc-and-di/src/main/java/io/reflectoring/iocanddi/withDependencyInjection/ShippingService.java

@@ -0,0 +1,30 @@
+package io.reflectoring.iocanddi.withDependencyInjection;
+
+import org.springframework.boot.jdbc.DataSourceBuilder;
+import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.DefaultUriBuilderFactory;
+
+import javax.sql.DataSource;
+import java.time.Duration;
+
+public class ShippingService {
+    private RestTemplate restTemplate;
+    private DataSource dataSource;
+
+    public ShippingService(RestTemplate restTemplate, DataSource dataSource) {
+       this.restTemplate = restTemplate;
+       this.dataSource = dataSource;
+    }
+
+    private boolean packageIsShippable(String id) {
+        // business logic that make REST and database calls
+        return true;
+    }
+
+    public void ship(String shipmentId) {
+        if (packageIsShippable(shipmentId)) {
+            // ship the thing
+        }
+    }
+}

spring-boot/ioc-and-di/src/main/java/io/reflectoring/iocanddi/withSpringDependencyInjection/ShippingService.java

@@ -0,0 +1,20 @@
+package io.reflectoring.iocanddi.withSpringDependencyInjection;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestTemplate;
+
+@Component
+public class ShippingService {
+
+    RestTemplate restTemplate;
+
+    @Autowired
+    public ShippingService(RestTemplate restTemplate) {
+        this.restTemplate = restTemplate;
+    }
+
+    public void ship(String shipmentId) {
+        // do stuff
+    }
+}

spring-boot/ioc-and-di/src/main/resources/application.properties

@@ -0,0 +1 @@
+

spring-boot/ioc-and-di/src/test/java/io/reflectoring/iocanddi/IocAndDiApplicationTests.java

@@ -0,0 +1,26 @@
+package io.reflectoring.iocanddi;
+
+import io.reflectoring.iocanddi.withSpringDependencyInjection.ShippingService;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.web.client.RestTemplate;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+@SpringBootTest
+class IocAndDiApplicationTests {
+
+	@Autowired
+	RestTemplate restTemplate;
+
+	@Autowired
+	ShippingService shippingService;
+
+	@Test
+	void contextLoads() {
+		assertNotNull(restTemplate.getUriTemplateHandler());
+		shippingService.ship("te");
+	}
+
+}

spring-boot/ioc-and-di/src/test/java/io/reflectoring/iocanddi/ShippingServiceTest.java

@@ -0,0 +1,28 @@
+package io.reflectoring.iocanddi;
+
+import io.reflectoring.iocanddi.withDependencyInjection.ShippingService;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.RestTemplate;
+
+import javax.sql.DataSource;
+
+import static org.mockito.Mockito.when;
+
+public class ShippingServiceTest {
+
+    @Test
+    void testShipping() {
+        RestTemplate restTemplateMock = Mockito.mock(RestTemplate.class);
+        DataSource dataSourceMock = Mockito.mock(DataSource.class);
+
+        when(restTemplateMock.getForEntity("url", String.class))
+                .thenReturn(ResponseEntity.ok("What Ever"));
+
+        ShippingService shippingService = new ShippingService(restTemplateMock, dataSourceMock);
+        shippingService.ship("some Id");
+
+        // assert stuff
+    }
+}

spring-security/getting-started/SecureApplication/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

spring-security/getting-started/SecureApplication/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.6/apache-maven-3.8.6-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar

spring-security/getting-started/SecureApplication/mvnw

@@ -0,0 +1,316 @@
+#!/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 "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$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="`\\unset -f command; \\command -v 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/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.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 "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$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 \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

spring-security/getting-started/SecureApplication/mvnw.cmd

@@ -0,0 +1,188 @@
+@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    https://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 "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\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/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq 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%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.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 "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\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%
+
+cmd /C exit /B %ERROR_CODE%

spring-security/getting-started/SecureApplication/pom.xml

@@ -0,0 +1,114 @@
+<?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>2.7.5</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.reflectoring</groupId>
+	<artifactId>security</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>security</name>
+	<description>Spring Security sample project</description>
+	<properties>
+		<java.version>11</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-security</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-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.security</groupId>
+			<artifactId>spring-security-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<version>1.18.20</version>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok-mapstruct-binding</artifactId>
+			<version>0.2.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.mapstruct</groupId>
+			<artifactId>mapstruct</artifactId>
+			<version>1.4.2.Final</version>
+		</dependency>
+		<dependency>
+			<groupId>org.hsqldb</groupId>
+			<artifactId>hsqldb</artifactId>
+			<version>2.4.0</version>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.zalando</groupId>
+			<artifactId>problem-spring-web</artifactId>
+			<version>0.27.0</version>
+		</dependency>
+		<!-- https://mvnrepository.com/artifact/org.hamcrest/hamcrest-library -->
+		<dependency>
+			<groupId>org.hamcrest</groupId>
+			<artifactId>hamcrest-library</artifactId>
+			<version>2.2</version>
+			<scope>test</scope>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.0</version>
+				<configuration>
+					<source>11</source>
+					<target>11</target>
+					<annotationProcessorPaths>
+						<path>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+							<version>1.18.20</version>
+						</path>
+						<path>
+							<groupId>org.mapstruct</groupId>
+							<artifactId>mapstruct-processor</artifactId>
+							<version>1.4.2.Final</version>
+						</path>
+					</annotationProcessorPaths>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/CustomHeaderValidatorFilter.java

@@ -0,0 +1,37 @@
+package com.reflectoring.security;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.reflectoring.security.exception.CommonException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.util.StringUtils;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public class CustomHeaderValidatorFilter extends OncePerRequestFilter {
+
+    private static final Logger log = LoggerFactory.getLogger(CustomHeaderValidatorFilter.class);
+
+    @Override
+    protected boolean shouldNotFilter(HttpServletRequest request) throws ServletException {
+        String path = request.getRequestURI();
+        return path.startsWith("/library/books/all");
+    }
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
+        log.info("Custom filter called...");
+        if (StringUtils.isEmpty(request.getHeader("X-Application-Name"))) {
+            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
+            response.setContentType("application/json");
+            response.getOutputStream().println(new ObjectMapper().writeValueAsString(CommonException.headerError()));
+        } else {
+            filterChain.doFilter(request, response);
+        }
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/SecurityApplication.java

@@ -0,0 +1,13 @@
+package com.reflectoring.security;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SecurityApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SecurityApplication.class, args);
+	}
+
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/config/BasicAuthProperties.java

@@ -0,0 +1,58 @@
+package com.reflectoring.security.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.crypto.factory.PasswordEncoderFactories;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+@ConfigurationProperties(prefix = "auth")
+public class BasicAuthProperties {
+
+    private Map<String, UserDetail> users;
+
+    public Map<String, UserDetail> getUsers() {
+        return users;
+    }
+
+    public void setUsers(Map<String, UserDetail> users) {
+        this.users = users;
+    }
+
+    public Set<UserDetails> getUserDetails() {
+        return this.users.entrySet().stream()
+                .map(entry -> User.withUsername(entry.getKey())
+                        .passwordEncoder(PasswordEncoderFactories.createDelegatingPasswordEncoder()::encode)
+                        .password(entry.getValue().getPassword())
+                        .roles(entry.getValue().getRole().toUpperCase())
+                        .build())
+                .collect(Collectors.toSet());
+    }
+
+    private static class UserDetail {
+
+        private String password;
+
+        private String role;
+
+        public String getPassword() {
+            return password;
+        }
+
+        public void setPassword(String password) {
+            this.password = password;
+        }
+
+        public String getRole() {
+            return role;
+        }
+
+        public void setRole(String role) {
+            this.role = role;
+        }
+    }
+
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/config/SecurityConfiguration.java

@@ -0,0 +1,186 @@
+package com.reflectoring.security.config;
+
+import com.reflectoring.security.CustomHeaderValidatorFilter;
+import com.reflectoring.security.exception.UserAuthenticationErrorHandler;
+import com.reflectoring.security.exception.UserForbiddenErrorHandler;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.annotation.Order;
+import org.springframework.http.HttpMethod;
+import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityCustomizer;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.AuthenticationEntryPoint;
+import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
+
+@Configuration
+@EnableWebSecurity
+@EnableGlobalMethodSecurity(prePostEnabled = true)
+@EnableConfigurationProperties(BasicAuthProperties.class)
+public class SecurityConfiguration {
+
+    private final BasicAuthProperties props;
+
+    public SecurityConfiguration(BasicAuthProperties props) {
+        this.props = props;
+    }
+
+    @Bean
+    @Order(1)
+    public SecurityFilterChain bookFilterChain(HttpSecurity http) throws Exception {
+        http
+                .csrf().disable()
+                .sessionManagement(session -> session
+                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
+                .antMatcher("/library/**")
+                .authorizeRequests()
+                .antMatchers(HttpMethod.GET, "/library/**").hasRole("USER").anyRequest().authenticated()
+                .and()
+                .httpBasic()
+                .and()
+                .exceptionHandling(exception -> exception
+                        .authenticationEntryPoint(userAuthenticationErrorHandler())
+                        .accessDeniedHandler(new UserForbiddenErrorHandler()));
+
+        http.addFilterBefore(customHeaderValidatorFilter(), BasicAuthenticationFilter.class);
+
+        return http.build();
+    }
+
+    @Bean
+    public CustomHeaderValidatorFilter customHeaderValidatorFilter() {
+        return new CustomHeaderValidatorFilter();
+    }
+
+    @Bean
+    public WebSecurityCustomizer webSecurityCustomizer() {
+        return (web) -> web.ignoring().antMatchers("/library/info");
+    }
+
+    @Bean
+    public UserDetailsService userDetailsService() {
+        return new InMemoryUserDetailsManager(props.getUserDetails());
+    }
+
+    /*@Bean
+    public AuthenticationManager authenticationManager(HttpSecurity http) throws Exception {
+
+        var builder = http.getSharedObject(AuthenticationManagerBuilder.class)
+                .userDetailsService(new InMemoryUserDetailsManager(props.getUserDetails()));
+        return builder.and().build();
+    }*/
+
+    @Bean
+    public AuthenticationEntryPoint userAuthenticationErrorHandler() {
+        UserAuthenticationErrorHandler userAuthenticationErrorHandler =
+                new UserAuthenticationErrorHandler();
+        userAuthenticationErrorHandler.setRealmName("Basic Authentication");
+        return userAuthenticationErrorHandler;
+    }
+
+    /*@Bean
+    public UsernamePasswordAuthenticationFilter usernamePasswordAuthenticationFilter(HttpSecurity http) throws Exception {
+
+        //AuthenticationEntryPoint authenticationEntryPoint = new UserAuthenticationErrorHandler();
+        return new UsernamePasswordAuthenticationFilter(authenticationManager(http));
+    }*/
+
+    public static final String[] ENDPOINTS_WHITELIST = {
+            "/css/**",
+            "/login",
+            "/home"
+    };
+    public static final String LOGIN_URL = "/login";
+    public static final String LOGIN_FAIL_URL = LOGIN_URL + "?error";
+    public static final String DEFAULT_SUCCESS_URL = "/home";
+    public static final String USERNAME = "username";
+    public static final String PASSWORD = "password";
+
+    @Bean
+    @Order(1)
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+        // Requests
+        http.authorizeRequests(request -> request.antMatchers(ENDPOINTS_WHITELIST).hasRole("ADMIN")
+                        .anyRequest().authenticated())
+                // CSRF
+                .csrf().disable()
+                .antMatcher("/login")
+                //.formLogin(Customizer.withDefaults())
+                .formLogin(form -> form
+                        .loginPage(LOGIN_URL)
+                        .loginProcessingUrl(LOGIN_URL)
+                        .failureUrl(LOGIN_FAIL_URL)
+                        .usernameParameter(USERNAME)
+                        .passwordParameter(PASSWORD)
+                        .defaultSuccessUrl(DEFAULT_SUCCESS_URL))
+                //.logout(Customizer.withDefaults())
+                .logout(logout -> logout
+                        .logoutUrl("/logout")
+                        .invalidateHttpSession(true)
+                        .deleteCookies("JSESSIONID")
+                        .logoutSuccessUrl(LOGIN_URL + "?logout"))
+                //.sessionManagement(Customizer.withDefaults())
+                .sessionManagement(session -> session
+                        .sessionCreationPolicy(SessionCreationPolicy.ALWAYS)
+                        .invalidSessionUrl("/invalidSession")
+                        .maximumSessions(1)
+                        .maxSessionsPreventsLogin(true));
+
+        return http.build();
+    }
+
+        /*private AuthenticationFilter authenticationFilter(HttpSecurity http) {
+            AuthenticationFilter filter = new AuthenticationFilter(
+                    resolver(http), authenticationConverter());
+            filter.setSuccessHandler((request, response, auth) -> {});
+            return filter;
+        }
+
+        public AuthenticationConverter authenticationConverter() {
+            return new BasicAuthenticationConverter();
+        }
+
+        public AuthenticationManagerResolver<HttpServletRequest> resolver(HttpSecurity http) {
+            return request -> {
+                if (request.getPathInfo().contains("login")) {
+                    try {
+                        return customAuthenticationManager(http);
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                }
+                return null;
+            };
+        }
+
+        public AuthenticationManager customAuthenticationManager(HttpSecurity http)
+                throws Exception {
+            return http.getSharedObject(AuthenticationManagerBuilder.class)
+                    .userDetailsService(userDetailsService())
+                    .passwordEncoder(passwordEncoder())
+                    .and()
+                    .build();
+        }
+
+        public InMemoryUserDetailsManager userDetailsService() {
+            UserDetails admin = User.withUsername("user")
+                    .password(passwordEncoder().encode("userpass"))
+                    .roles("USER")
+                    .build();
+            return new InMemoryUserDetailsManager(admin);
+        }
+
+        public PasswordEncoder passwordEncoder() {
+            return new BCryptPasswordEncoder();
+        }*/
+
+
+}
+

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/exception/CommonException.java

@@ -0,0 +1,32 @@
+package com.reflectoring.security.exception;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import org.zalando.problem.AbstractThrowableProblem;
+import org.zalando.problem.StatusType;
+
+import static com.fasterxml.jackson.annotation.JsonInclude.Include.NON_EMPTY;
+import static org.zalando.problem.Status.*;
+
+@JsonInclude(NON_EMPTY)
+@JsonIgnoreProperties({"stackTrace", "type", "title", "message", "localizedMessage", "parameters"})
+public class CommonException extends AbstractThrowableProblem {
+
+    private CommonException(StatusType status, String detail) {
+        super(null, null, status, detail, null, null, null);
+    }
+
+    public static CommonException unauthorized() {
+        return new CommonException(UNAUTHORIZED, "Unauthorised or Bad Credentials");
+    }
+
+    public static CommonException forbidden() {
+        return new CommonException(FORBIDDEN, "Forbidden");
+    }
+
+    public static CommonException headerError() {
+        return new CommonException(FORBIDDEN, "Missing Header");
+    }
+
+
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/exception/UserAuthenticationErrorHandler.java

@@ -0,0 +1,34 @@
+package com.reflectoring.security.exception;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.web.authentication.www.BasicAuthenticationEntryPoint;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+public class UserAuthenticationErrorHandler extends BasicAuthenticationEntryPoint {
+    private final ObjectMapper objectMapper;
+
+    public UserAuthenticationErrorHandler() {
+        this.objectMapper = new ObjectMapper();
+    }
+
+    @Override
+    public void commence(HttpServletRequest request,
+                         HttpServletResponse response,
+                         AuthenticationException ex) throws IOException {
+        /*response.setContentType("application/json");
+        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+        response.getOutputStream().println(objectMapper.writeValueAsString(CommonException.unauthorized()));
+    */
+        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+        response.addHeader("WWW-Authenticate", "Basic realm=" + getRealmName() + "");
+
+        final PrintWriter writer = response.getWriter();
+        writer.println("HTTP Status 401 : " + ex.getMessage());
+    }
+
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/exception/UserForbiddenErrorHandler.java

@@ -0,0 +1,28 @@
+package com.reflectoring.security.exception;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.web.access.AccessDeniedHandler;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public class UserForbiddenErrorHandler implements AccessDeniedHandler {
+
+    private final ObjectMapper objectMapper;
+
+    public UserForbiddenErrorHandler()
+    {
+        this.objectMapper = new ObjectMapper();
+    }
+
+    @Override
+    public void handle(HttpServletRequest request,
+                       HttpServletResponse response,
+                       AccessDeniedException ex) throws IOException {
+        response.setContentType("application/json");
+        response.setStatus(HttpServletResponse.SC_FORBIDDEN);
+        response.getOutputStream().println(objectMapper.writeValueAsString(CommonException.forbidden()));
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/mapper/BookMapper.java

@@ -0,0 +1,23 @@
+package com.reflectoring.security.mapper;
+
+import com.reflectoring.security.mapstruct.AuthorDto;
+import com.reflectoring.security.mapstruct.BookDto;
+import com.reflectoring.security.persistence.Author;
+import com.reflectoring.security.persistence.Book;
+import org.mapstruct.Mapper;
+
+import java.util.List;
+
+@Mapper(componentModel = "spring")
+public interface BookMapper {
+    BookDto bookToBookDto(Book book);
+
+    List<BookDto> bookToBookDto(List<Book> book);
+
+    AuthorDto authorToAuthorDto(Author author);
+
+    Book bookDtoToBook(BookDto bookDto);
+
+    Author authorDtoToAuthor(AuthorDto authorDto);
+}
+

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/mapstruct/AuthorDto.java

@@ -0,0 +1,50 @@
+package com.reflectoring.security.mapstruct;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+public class AuthorDto {
+
+    @JsonProperty("id")
+    private long id;
+
+    @JsonProperty("name")
+    private String name;
+
+    @JsonProperty("dob")
+    private String dob;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDob() {
+        return dob;
+    }
+
+    public void setDob(String dob) {
+        this.dob = dob;
+    }
+
+    @Override
+    public String toString() {
+        return "AuthorDto{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", dob='" + dob + '\'' +
+                '}';
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/mapstruct/BookDto.java

@@ -0,0 +1,87 @@
+package com.reflectoring.security.mapstruct;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.NoArgsConstructor;
+
+import java.util.Set;
+
+@NoArgsConstructor
+public class BookDto {
+    @JsonProperty("bookId")
+    private long id;
+
+    @JsonProperty("bookName")
+    private String name;
+
+    @JsonProperty("publisher")
+    private String publisher;
+
+    @JsonProperty("publicationYear")
+    private String publicationYear;
+
+    @JsonProperty("genre")
+    private String genre;
+
+    @JsonProperty("authors")
+    private Set<AuthorDto> authors;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(String publisher) {
+        this.publisher = publisher;
+    }
+
+    public String getPublicationYear() {
+        return publicationYear;
+    }
+
+    public void setPublicationYear(String publicationYear) {
+        this.publicationYear = publicationYear;
+    }
+
+    public String getGenre() {
+        return genre;
+    }
+
+    public void setGenre(String genre) {
+        this.genre = genre;
+    }
+
+    public Set<AuthorDto> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<AuthorDto> authors) {
+        this.authors = authors;
+    }
+
+    @Override
+    public String toString() {
+        return "BookDto{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", publisher='" + publisher + '\'' +
+                ", publicationYear='" + publicationYear + '\'' +
+                ", genre=" + genre +
+                ", authors=" + authors +
+                '}';
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/model/LibraryInfo.java

@@ -0,0 +1,86 @@
+package com.reflectoring.security.model;
+
+public class LibraryInfo {
+    private String libName;
+
+    private String libAddress;
+
+    private String suburb;
+
+    private String postcode;
+
+    private String landmark;
+
+    private String phone;
+
+    private String email;
+
+    public String getLibName() {
+        return libName;
+    }
+
+    public void setLibName(String libName) {
+        this.libName = libName;
+    }
+
+    public String getLibAddress() {
+        return libAddress;
+    }
+
+    public void setLibAddress(String libAddress) {
+        this.libAddress = libAddress;
+    }
+
+    public String getSuburb() {
+        return suburb;
+    }
+
+    public void setSuburb(String suburb) {
+        this.suburb = suburb;
+    }
+
+    public String getPostcode() {
+        return postcode;
+    }
+
+    public void setPostcode(String postcode) {
+        this.postcode = postcode;
+    }
+
+    public String getLandmark() {
+        return landmark;
+    }
+
+    public void setLandmark(String landmark) {
+        this.landmark = landmark;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @java.lang.Override
+    public java.lang.String toString() {
+        return "LibraryInfo{" +
+                "libName='" + libName + '\'' +
+                ", libAddress='" + libAddress + '\'' +
+                ", suburb='" + suburb + '\'' +
+                ", postcode='" + postcode + '\'' +
+                ", landmark='" + landmark + '\'' +
+                ", phone='" + phone + '\'' +
+                ", email='" + email + '\'' +
+                '}';
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/persistence/Author.java

@@ -0,0 +1,61 @@
+package com.reflectoring.security.persistence;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.Set;
+
+@Entity
+public class Author implements Serializable {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    private String name;
+
+    private String dob;
+
+    @ManyToMany(mappedBy = "authors")
+    private Set<Book> books;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
+
+    public String getDob() {
+        return dob;
+    }
+
+    public void setDob(String dob) {
+        this.dob = dob;
+    }
+
+    @Override
+    public String toString() {
+        return "Author{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", dob='" + dob + '\'' +
+                '}';
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/persistence/Book.java

@@ -0,0 +1,86 @@
+package com.reflectoring.security.persistence;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.Set;
+
+@Entity
+@Table(name = "BOOK")
+public class Book implements Serializable {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    private String name;
+
+    private String publisher;
+
+    private String publicationYear;
+
+    private String genre;
+
+    @ManyToMany(cascade = CascadeType.PERSIST, fetch = FetchType.LAZY)
+    @JoinTable(name = "author_book",
+            joinColumns = @JoinColumn(name = "book_id", referencedColumnName = "id"),
+            inverseJoinColumns = @JoinColumn(name = "author_id", referencedColumnName = "id"))
+    private Set<com.reflectoring.security.persistence.Author> authors;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<Author> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<com.reflectoring.security.persistence.Author> authors) {
+        this.authors = authors;
+    }
+
+    public String getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(String publisher) {
+        this.publisher = publisher;
+    }
+
+    public String getPublicationYear() {
+        return publicationYear;
+    }
+
+    public void setPublicationYear(String publicationYear) {
+        this.publicationYear = publicationYear;
+    }
+
+    public String getGenre() {
+        return genre;
+    }
+
+    public void setGenre(String genre) {
+        this.genre = genre;
+    }
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", publisher='" + publisher + '\'' +
+                ", publicationYear='" + publicationYear + '\'' +
+                ", genre=" + genre +
+                '}';
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/repository/AuthorRepository.java

@@ -0,0 +1,9 @@
+package com.reflectoring.security.repository;
+
+import com.reflectoring.security.persistence.Author;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface AuthorRepository extends JpaRepository<Author, Long> {
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/repository/BookRepository.java

@@ -0,0 +1,18 @@
+package com.reflectoring.security.repository;
+
+import com.reflectoring.security.persistence.Book;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.security.access.prepost.PostAuthorize;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface BookRepository extends JpaRepository<Book, Long> {
+
+
+    List<Book> findByGenre(String genre);
+
+    @PostAuthorize("returnObject.size() > 0")
+    List<Book> findAll();
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/repository/DatabaseComponent.java

@@ -0,0 +1,92 @@
+package com.reflectoring.security.repository;
+
+import com.reflectoring.security.persistence.Author;
+import com.reflectoring.security.persistence.Book;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+import java.util.Set;
+
+@Component
+public class DatabaseComponent implements CommandLineRunner {
+
+    private final BookRepository bookRepository;
+
+    @Autowired
+    public DatabaseComponent(BookRepository bookRepository) {
+        this.bookRepository = bookRepository;
+    }
+
+
+    @Override
+    public void run(String... args) throws Exception {
+
+        Book book = new Book();
+        book.setName("The Kite Runner");
+        book.setPublisher("Riverhead books");
+        book.setPublicationYear("2003");
+        book.setGenre("Fiction");
+        Author author = new Author();
+        author.setName("Khaled Hosseini");
+        author.setDob("04/03/1965");
+        book.setAuthors(Set.of(author));
+        bookRepository.save(book);
+
+        book = new Book();
+        book.setName("Exiles");
+        book.setPublisher("Pan Macmillan");
+        book.setPublicationYear("2022");
+        book.setGenre("Fiction");
+        author = new Author();
+        author.setName("Jane Harper");
+        author.setDob("01/06/1980");
+        book.setAuthors(Set.of(author));
+        bookRepository.save(book);
+
+        book = new Book();
+        book.setName("A Game of Thrones");
+        book.setPublisher("Bantam Spectra");
+        book.setPublicationYear("1996");
+        book.setGenre("Fantasy");
+        author = new Author();
+        author.setName("R.R.Martin");
+        author.setDob("20/09/1948");
+        book.setAuthors(Set.of(author));
+        bookRepository.save(book);
+
+        book = new Book();
+        book.setName("American Gods");
+        book.setPublisher("Headline");
+        book.setPublicationYear("2001");
+        book.setGenre("Fantasy");
+        author = new Author();
+        author.setName("Neil Gaiman");
+        author.setDob("10/11/1960");
+        book.setAuthors(Set.of(author));
+        bookRepository.save(book);
+
+        book = new Book();
+        book.setName("The Passenger");
+        book.setPublisher("Knopf");
+        book.setPublicationYear("2022");
+        book.setGenre("Mystery");
+        author = new Author();
+        author.setName("Cormac McCarthy");
+        author.setDob("20/07/1933");
+        book.setAuthors(Set.of(author));
+        bookRepository.save(book);
+
+        book = new Book();
+        book.setName("Gone Girl");
+        book.setPublisher("Crown Publishing Group");
+        book.setPublicationYear("2012");
+        book.setGenre("Mystery");
+        author = new Author();
+        author.setName("Gillian Flynn");
+        author.setDob("24/02/1971");
+        book.setAuthors(Set.of(author));
+        bookRepository.save(book);
+
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/service/BookService.java

@@ -0,0 +1,50 @@
+package com.reflectoring.security.service;
+
+import com.reflectoring.security.mapper.BookMapper;
+import com.reflectoring.security.mapstruct.BookDto;
+import com.reflectoring.security.model.LibraryInfo;
+import com.reflectoring.security.persistence.Book;
+import com.reflectoring.security.repository.BookRepository;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class BookService {
+
+    private static final Logger log = LoggerFactory.getLogger(BookService.class);
+
+    private final BookRepository bookRepository;
+
+    private final BookMapper bookMapper;
+
+    public BookService(BookRepository bookRepository, BookMapper bookMapper) {
+        this.bookRepository = bookRepository;
+        this.bookMapper = bookMapper;
+    }
+
+    public List<BookDto> getBook(String genre) {
+        List<Book> books = bookRepository.findByGenre(genre);
+        return bookMapper.bookToBookDto(books);
+    }
+
+    public List<BookDto> getAllBooks() {
+        List<Book> books = bookRepository.findAll();
+        return bookMapper.bookToBookDto(books);
+    }
+
+    public LibraryInfo getLibraryInfo() {
+        LibraryInfo info = new LibraryInfo();
+        info.setLibName("Chatswood Library");
+        info.setLibAddress("Lower Ground, The Concourse, 409 Victoria Avenue");
+        info.setSuburb("Chatswood");
+        info.setPostcode("2067");
+        info.setLandmark("Opp Westfield Shopping Centre");
+        info.setPhone("97777900");
+        info.setEmail("library@willoughby.nsw.gov.au");
+
+        return info;
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/web/BookController.java

@@ -0,0 +1,50 @@
+package com.reflectoring.security.web;
+
+import com.reflectoring.security.exception.UserAuthenticationErrorHandler;
+import com.reflectoring.security.mapstruct.BookDto;
+import com.reflectoring.security.model.LibraryInfo;
+import com.reflectoring.security.service.BookService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.authentication.BadCredentialsException;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.List;
+
+@Controller
+public class BookController {
+
+    private static final Logger log = LoggerFactory.getLogger(BookController.class);
+
+    private final BookService bookService;
+
+    public BookController(BookService bookService) {
+        this.bookService = bookService;
+    }
+
+    @GetMapping("/library/books")
+    @PreAuthorize("#user == authentication.principal.username")
+    public ResponseEntity<List<BookDto>> getBooks(@RequestParam String genre, @RequestParam String user) {
+        return ResponseEntity.ok().body(bookService.getBook(genre));
+    }
+
+    @GetMapping("/library/books/all")
+    @PreAuthorize("hasRole('ROLE_USER')")
+    public ResponseEntity<List<BookDto>> getAllBooks() {
+        return ResponseEntity.ok().body(bookService.getAllBooks());
+    }
+
+    @GetMapping("/library/info")
+    public ResponseEntity<LibraryInfo> getInfo() {
+        return ResponseEntity.ok().body(bookService.getLibraryInfo());
+    }
+
+
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/web/HomeController.java

@@ -0,0 +1,20 @@
+package com.reflectoring.security.web;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+import javax.servlet.http.HttpServletResponse;
+
+@Controller
+public class HomeController {
+
+    @GetMapping("/home")
+    public String homePage(HttpServletResponse response) {
+        return "homePage";
+    }
+
+    @GetMapping("/invalidSession")
+    public String invalidSession(HttpServletResponse response) {
+        return "invalidSession";
+    }
+}

spring-security/getting-started/SecureApplication/src/main/java/com/reflectoring/security/web/LoginController.java

@@ -0,0 +1,13 @@
+package com.reflectoring.security.web;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class LoginController {
+
+    @GetMapping("/login")
+    String login() {
+        return "login";
+    }
+}

spring-security/getting-started/SecureApplication/src/main/resources/application.properties

@@ -0,0 +1 @@
+

spring-security/getting-started/SecureApplication/src/main/resources/application.yml

@@ -0,0 +1,28 @@
+server:
+  port: 8083
+
+spring:
+  #security:
+    #user:
+      #name: admin
+      #password: passw@rd
+
+  datasource:
+    driver-class-name: org.hsqldb.jdbc.JDBCDriver
+    url: jdbc:hsqldb:mem:testdb;DB_CLOSE_DELAY=-1
+    username: sa
+    password:
+
+logging:
+  level:
+    org.springframework: DEBUG
+    org.springframework.security: DEBUG
+
+auth:
+  users:
+    loginadmin:
+      role: admin
+      password: loginpass
+    bookadmin:
+      role: user
+      password: bookpass

spring-security/getting-started/SecureApplication/src/main/resources/schema.sql

@@ -0,0 +1,9 @@
+TRUNCATE SCHEMA PUBLIC AND COMMIT;
+
+CREATE TABLE IF NOT EXISTS BOOK( ID INTEGER  GENERATED BY DEFAULT AS IDENTITY (START WITH 1000), NAME VARCHAR(45) NOT NULL, PRIMARY KEY(ID));
+
+CREATE TABLE IF NOT EXISTS AUTHOR_BOOK( BOOK_ID INTEGER  NOT NULL, AUTHOR_ID INTEGER NOT NULL, PRIMARY KEY(BOOK_ID, AUTHOR_ID));
+
+CREATE TABLE IF NOT EXISTS AUTHOR( ID INTEGER  GENERATED BY DEFAULT AS IDENTITY (START WITH 5000), NAME VARCHAR(45) NOT NULL, PRIMARY KEY(ID));
+
+CREATE SEQUENCE IF NOT EXISTS hibernate_sequence START WITH 1 INCREMENT BY 1;

spring-security/getting-started/SecureApplication/src/main/resources/templates/homePage.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en"  xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+<p>HomePage</p>
+<div>
+    <a href="http://localhost:8083/logout">Logout</a></br>
+    <h2>SUCCESS</h2>
+</div>
+</body>
+</html>

spring-security/getting-started/SecureApplication/src/main/resources/templates/invalidSession.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en"  xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+<h2>Invalid Session</h2>
+</body>
+</html>

spring-security/getting-started/SecureApplication/src/main/resources/templates/login.html

@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="https://www.thymeleaf.org">
+<head>
+    <title>Please Log In</title>
+</head>
+<body>
+<h1>Please Log In</h1>
+<div th:if="${param.error}">
+    Invalid username and password.</div>
+<div th:if="${param.logout}">
+    You have been logged out.</div>
+<form th:action="@{/login}" method="post">
+    <div>
+        <input type="text" name="username" placeholder="Username"/>
+    </div>
+    <div>
+        <input type="password" name="password" placeholder="Password"/>
+    </div>
+    <input type="submit" value="Log in" />
+</form>
+</body>
+</html>
+

spring-security/getting-started/SecureApplication/src/test/java/com/reflectoring/security/SecurityApplicationTests.java

@@ -0,0 +1,13 @@
+package com.reflectoring.security;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class SecurityApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}

spring-security/getting-started/SecureApplication/src/test/java/com/reflectoring/security/web/BookControllerTest.java

@@ -0,0 +1,122 @@
+package com.reflectoring.security.web;
+
+import com.reflectoring.security.config.BasicAuthProperties;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.security.test.context.support.WithMockUser;
+import org.springframework.security.test.context.support.WithUserDetails;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.jdbc.Sql;
+import org.springframework.test.context.jdbc.SqlGroup;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.hamcrest.Matchers.hasSize;
+import static org.springframework.security.test.web.servlet.response.SecurityMockMvcResultMatchers.authenticated;
+import static org.springframework.test.context.jdbc.Sql.ExecutionPhase.BEFORE_TEST_METHOD;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.httpBasic;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+@SqlGroup({
+        @Sql(value = "classpath:init/first.sql", executionPhase = BEFORE_TEST_METHOD),
+        @Sql(value = "classpath:init/second.sql", executionPhase = BEFORE_TEST_METHOD)
+})
+public class BookControllerTest {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Test
+    @WithMockUser(username = "bookadmin", roles = {"USER"})
+    void successIfSecurityApplies() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fiction")
+                        .param("user", "bookadmin")
+                        .header("X-Application-Name", "Library"))
+                .andDo(print())
+                .andExpect(status().isOk())
+                .andExpect(authenticated().withUsername("bookadmin"))
+                .andExpect(authenticated().withRoles("USER"))
+                .andExpect(jsonPath("$", hasSize(3)))
+        ;
+    }
+
+    @Test
+    @WithMockUser(username = "bookadmin", roles = {"ADMIN"})
+    void failsForWrongAuthorization() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fiction")
+                        .param("user", "bookadmin")
+                        .header("X-Application-Name", "Library"))
+                .andDo(print())
+                .andExpect(status().isForbidden())
+        ;
+    }
+
+    @Test
+    void failsIfSecurityApplies() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fiction")
+                        .param("user", "bookadmin")
+                        .header("X-Application-Name", "Library"))
+                .andDo(print())
+                .andExpect(status().isUnauthorized())
+        ;
+    }
+
+    @Test
+    @WithUserDetails(value="bookadmin", userDetailsServiceBeanName="userDetailsService")
+    void testBookWithConfiguredUserDetails() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fantasy")
+                        .param("user", "bookadmin")
+                        .header("X-Application-Name", "Library"))
+                .andDo(print())
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$", hasSize(1)))
+        ;
+    }
+
+    @Test
+    @WithUserDetails(value="bookadmin", userDetailsServiceBeanName="userDetailsService")
+    void failsIfMandatoryHeaderIsMissing() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fantasy")
+                        .param("user", "bookadmin"))
+                        //.header("X-Application-Name", "Library"))
+                .andDo(print())
+                .andExpect(status().isForbidden())
+        ;
+    }
+
+    @Test
+    @WithUserDetails(value="bookadmin", userDetailsServiceBeanName="userDetailsService")
+    void failsIfPreAuthorizeConditionFails() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fantasy")
+                        .param("user", "bookuser")
+                .header("X-Application-Name", "Library"))
+                .andDo(print())
+                .andExpect(status().isForbidden())
+        ;
+    }
+
+    @Test
+    //@WithUserDetails(value="bookadmin", userDetailsServiceBeanName="userDetailsService")
+    void testBookWithWrongCredentialsUserDetails() throws Exception {
+        mockMvc.perform(get("/library/books")
+                        .param("genre", "Fantasy")
+                        .param("user", "bookadmin")
+                        .header("X-Application-Name", "Library")
+                        .with(httpBasic("bookadmin", "password")))
+                .andDo(print())
+                .andExpect(status().isUnauthorized());
+    }
+}

spring-security/getting-started/SecureApplication/src/test/resources/application-test.yml

@@ -0,0 +1,21 @@
+spring:
+  datasource:
+    driver-class-name: org.hsqldb.jdbc.JDBCDriver
+    url: jdbc:hsqldb:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
+    username: sa
+    password:
+  jpa:
+    hibernate:
+      ddl-auto: create-drop
+    defer-datasource-initialization: true
+    show-sql: true
+    properties:
+      hibernate:
+        dialect: H2Dialect
+        format_sql: true
+
+logging:
+  level:
+    org:
+      hibernate:
+        sql: info

spring-security/getting-started/SecureApplication/src/test/resources/init/first.sql

@@ -0,0 +1,3 @@
+TRUNCATE TABLE AUTHOR_BOOK RESTART IDENTITY;
+TRUNCATE TABLE BOOK RESTART IDENTITY;
+TRUNCATE TABLE AUTHOR RESTART IDENTITY;

spring-security/getting-started/SecureApplication/src/test/resources/init/second.sql

@@ -0,0 +1,5 @@
+INSERT INTO BOOK (id, name, publisher, publication_year, genre) VALUES (1, 'The Kite Runner', 'Riverhead books', '2003', 'Fiction');
+INSERT INTO BOOK (id, name, publisher, publication_year, genre) VALUES (2, 'Exiles', 'Pan Macmillan', '2022', 'Fiction');
+INSERT INTO BOOK (id, name, publisher, publication_year, genre) VALUES (3, 'A Game of Thrones', 'Bantam Spectra', '1996', 'Fiction');
+INSERT INTO BOOK (id, name, publisher, publication_year, genre) VALUES (4, 'American Gods', 'Headline', '2001', 'Fantasy');
+INSERT INTO BOOK (id, name, publisher, publication_year, genre) VALUES (5, 'The Passenger', 'Knopf', '2022', 'Mystery');