JAVA-15787 Created new di-modules and server-modules

- Moved spring-freemarker to spring-web-modules

di-modules/cdi/README.md

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+## CDI
+
+This module contains articles about Contexts and Dependency Injection (CDI)
+
+### Relevant Articles:
+- [CDI Interceptor vs Spring AspectJ](https://www.baeldung.com/cdi-interceptor-vs-spring-aspectj)
+- [An Introduction to CDI (Contexts and Dependency Injection) in Java](https://www.baeldung.com/java-ee-cdi)
+- [Introduction to the Event Notification Model in CDI 2.0](https://www.baeldung.com/cdi-event-notification)
+

di-modules/cdi/pom.xml

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+<?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>
+    <artifactId>cdi</artifactId>
+    <name>cdi</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-spring-5</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-spring-5</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>javax.enterprise</groupId>
+            <artifactId>cdi-api</artifactId>
+            <version>${cdi-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jboss.weld.se</groupId>
+            <artifactId>weld-se-core</artifactId>
+            <version>${weld-se-core.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.aspectj</groupId>
+            <artifactId>aspectjweaver</artifactId>
+            <version>${aspectjweaver.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <cdi-api.version>2.0.SP1</cdi-api.version>
+        <weld-se-core.version>3.0.5.Final</weld-se-core.version>
+        <aspectjweaver.version>1.9.2</aspectjweaver.version>
+    </properties>
+
+</project>

di-modules/cdi/src/main/java/com/baeldung/cdi2observers/application/BootstrappingApplication.java

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+package com.baeldung.cdi2observers.application;
+
+import com.baeldung.cdi2observers.events.ExampleEvent;
+
+import javax.enterprise.inject.se.SeContainer;
+import javax.enterprise.inject.se.SeContainerInitializer;
+
+public class BootstrappingApplication {
+    
+    public static void main(String... args) {
+        SeContainerInitializer containerInitializer = SeContainerInitializer.newInstance();
+        try (SeContainer container = containerInitializer.initialize()) {
+            container.getBeanManager().fireEvent(new ExampleEvent("Welcome to Baeldung!"));
+        }
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEvent.java

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+package com.baeldung.cdi2observers.events;
+
+public class ExampleEvent {
+    
+   private final String eventMessage;
+
+    public ExampleEvent(String eventMessage) {
+        this.eventMessage = eventMessage;
+    }
+    
+    public String getEventMessage() {
+        return eventMessage;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEventSource.java

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+package com.baeldung.cdi2observers.events;
+
+import javax.enterprise.event.Event;
+import javax.inject.Inject;
+
+public class ExampleEventSource {
+    
+    @Inject
+    Event<ExampleEvent> exampleEvent;
+    
+    public void fireEvent() {
+        exampleEvent.fireAsync(new ExampleEvent("Welcome to Baeldung!"));
+    }   
+}

di-modules/cdi/src/main/java/com/baeldung/cdi2observers/observers/AnotherExampleEventObserver.java

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+package com.baeldung.cdi2observers.observers;
+
+import com.baeldung.cdi2observers.events.ExampleEvent;
+
+import javax.annotation.Priority;
+import javax.enterprise.event.Observes;
+
+public class AnotherExampleEventObserver {
+    
+    public String onEvent(@Observes @Priority(2) ExampleEvent event) {
+        return event.getEventMessage();
+    }   
+}

di-modules/cdi/src/main/java/com/baeldung/cdi2observers/observers/ExampleEventObserver.java

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+package com.baeldung.cdi2observers.observers;
+
+import com.baeldung.cdi2observers.events.ExampleEvent;
+import com.baeldung.cdi2observers.services.TextService;
+import javax.annotation.Priority;
+import javax.enterprise.event.Observes;
+
+public class ExampleEventObserver {
+    
+    public String onEvent(@Observes @Priority(1) ExampleEvent event, TextService textService) {
+        return textService.parseText(event.getEventMessage());
+    } 
+}

di-modules/cdi/src/main/java/com/baeldung/cdi2observers/services/TextService.java

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+package com.baeldung.cdi2observers.services;
+
+public class TextService {
+
+    public String parseText(String text) {
+        return text.toUpperCase();
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/application/FileApplication.java

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+package com.baeldung.dependencyinjection.application;
+
+import com.baeldung.dependencyinjection.imageprocessors.ImageFileProcessor;
+import org.jboss.weld.environment.se.Weld;
+import org.jboss.weld.environment.se.WeldContainer;
+
+public class FileApplication {
+    
+    public static void main(String[] args) {
+        Weld weld = new Weld();
+        WeldContainer container = weld.initialize();
+        ImageFileProcessor imageFileProcessor = container.select(ImageFileProcessor.class).get();
+        System.out.println(imageFileProcessor.openFile("file1.png"));
+        System.out.println(imageFileProcessor.writeFile("file1.png"));
+        System.out.println(imageFileProcessor.saveFile("file1.png"));
+        container.shutdown();
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/factories/TimeLoggerFactory.java

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+package com.baeldung.dependencyinjection.factories;
+
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import javax.enterprise.inject.Produces;
+
+public class TimeLoggerFactory {
+    
+    @Produces
+    public TimeLogger getTimeLogger() {
+        return new TimeLogger(new SimpleDateFormat("HH:mm"), Calendar.getInstance());
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/GifFileEditor.java

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+package com.baeldung.dependencyinjection.imagefileeditors;
+
+import com.baeldung.dependencyinjection.qualifiers.GifFileEditorQualifier;
+
+@GifFileEditorQualifier
+public class GifFileEditor implements ImageFileEditor {
+    
+    @Override
+    public String openFile(String fileName) {
+        return "Opening GIF file " + fileName;
+    }
+
+    @Override
+    public String editFile(String fileName) {
+        return "Editing GIF file " + fileName;
+    }
+    
+    @Override
+    public String writeFile(String fileName) {
+        return "Writing GIF file " + fileName;
+    }
+
+    @Override
+    public String saveFile(String fileName) {
+        return "Saving GIF file " + fileName;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/ImageFileEditor.java

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+package com.baeldung.dependencyinjection.imagefileeditors;
+
+public interface ImageFileEditor {
+    
+    String openFile(String fileName);
+    
+    String editFile(String fileName);
+    
+    String writeFile(String fileName);
+    
+    String saveFile(String fileName);
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/JpgFileEditor.java

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+package com.baeldung.dependencyinjection.imagefileeditors;
+
+import com.baeldung.dependencyinjection.qualifiers.JpgFileEditorQualifier;
+
+@JpgFileEditorQualifier
+public class JpgFileEditor implements ImageFileEditor {
+   
+    @Override
+    public String openFile(String fileName) {
+        return "Opening JPG file " + fileName;
+    }
+
+    @Override
+    public String editFile(String fileName) {
+        return "Editing JPG file " + fileName;
+    }
+    
+    @Override
+    public String writeFile(String fileName) {
+        return "Writing JPG file " + fileName;
+    }
+
+    @Override
+    public String saveFile(String fileName) {
+        return "Saving JPG file " + fileName;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/PngFileEditor.java

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+package com.baeldung.dependencyinjection.imagefileeditors;
+
+import com.baeldung.dependencyinjection.qualifiers.PngFileEditorQualifier;
+
+@PngFileEditorQualifier
+public class PngFileEditor implements ImageFileEditor {
+   
+    @Override
+    public String openFile(String fileName) {
+        return "Opening PNG file " + fileName;
+    }
+
+    @Override
+    public String editFile(String fileName) {
+        return "Editing PNG file " + fileName;
+    }
+    
+    @Override
+    public String writeFile(String fileName) {
+        return "Writing PNG file " + fileName;
+    }
+
+    @Override
+    public String saveFile(String fileName) {
+        return "Saving PNG file " + fileName;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/imageprocessors/ImageFileProcessor.java

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+package com.baeldung.dependencyinjection.imageprocessors;
+
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+import com.baeldung.dependencyinjection.qualifiers.PngFileEditorQualifier;
+import javax.inject.Inject;
+import com.baeldung.dependencyinjection.imagefileeditors.ImageFileEditor;
+
+public class ImageFileProcessor {
+    
+    private final ImageFileEditor imageFileEditor;
+    private final TimeLogger timeLogger;
+    
+    @Inject
+    public ImageFileProcessor(@PngFileEditorQualifier ImageFileEditor imageFileEditor, TimeLogger timeLogger) {
+        this.imageFileEditor = imageFileEditor;
+        this.timeLogger = timeLogger;
+    }
+    
+    public ImageFileEditor getImageFileditor() {
+        return imageFileEditor;
+    }
+    
+    public TimeLogger getTimeLogger() {
+        return timeLogger;
+    }
+    
+    public String openFile(String fileName) {
+        return imageFileEditor.openFile(fileName) + " at: " + timeLogger.getTime();
+    }
+    
+    public String editFile(String fileName) {
+        return imageFileEditor.editFile(fileName) + " at: " + timeLogger.getTime();
+    }
+     
+    public String writeFile(String fileName) {
+        return imageFileEditor.writeFile(fileName) + " at: " + timeLogger.getTime();
+    }
+    
+    public String saveFile(String fileName) {
+        return imageFileEditor.saveFile(fileName)+ " at: " + timeLogger.getTime();
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/loggers/TimeLogger.java

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+package com.baeldung.dependencyinjection.loggers;
+
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+
+public class TimeLogger {
+    
+    private final SimpleDateFormat dateFormat;
+    private final Calendar calendar;
+    
+    public TimeLogger(SimpleDateFormat dateFormat, Calendar calendar) {
+        this.dateFormat = dateFormat;
+        this.calendar = calendar;
+    }
+    
+    public String getTime() {
+        return dateFormat.format(calendar.getTime());
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/qualifiers/GifFileEditorQualifier.java

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+package com.baeldung.dependencyinjection.qualifiers;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER})
+public @interface GifFileEditorQualifier {}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/qualifiers/JpgFileEditorQualifier.java

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+package com.baeldung.dependencyinjection.qualifiers;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER})
+public @interface JpgFileEditorQualifier {}

di-modules/cdi/src/main/java/com/baeldung/dependencyinjection/qualifiers/PngFileEditorQualifier.java

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+package com.baeldung.dependencyinjection.qualifiers;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER})
+public @interface PngFileEditorQualifier {}

di-modules/cdi/src/main/java/com/baeldung/interceptor/Audited.java

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+package com.baeldung.interceptor;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.interceptor.InterceptorBinding;
+
+@InterceptorBinding
+@Target({ ElementType.METHOD, ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Audited {
+}

di-modules/cdi/src/main/java/com/baeldung/interceptor/AuditedInterceptor.java

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+package com.baeldung.interceptor;
+
+import javax.interceptor.AroundInvoke;
+import javax.interceptor.Interceptor;
+import javax.interceptor.InvocationContext;
+
+@Audited
+@Interceptor
+public class AuditedInterceptor {
+    public static boolean calledBefore = false;
+    public static boolean calledAfter = false;
+
+    @AroundInvoke
+    public Object auditMethod(InvocationContext ctx) throws Exception {
+        calledBefore = true;
+        Object result = ctx.proceed();
+        calledAfter = true;
+        return result;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/service/SuperService.java

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+package com.baeldung.service;
+
+import com.baeldung.interceptor.Audited;
+
+public class SuperService {
+    @Audited
+    public String deliverService(String uid) {
+        return uid;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/spring/aspect/SpringTestAspect.java

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+package com.baeldung.spring.aspect;
+
+import java.util.List;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.springframework.beans.factory.annotation.Autowired;
+
+@Aspect
+public class SpringTestAspect {
+    @Autowired
+    private List<String> accumulator;
+
+    @Around("execution(* com.baeldung.spring.service.SpringSuperService.*(..))")
+    public Object auditMethod(ProceedingJoinPoint jp) throws Throwable {
+        String methodName = jp.getSignature().getName();
+        accumulator.add("Call to " + methodName);
+        Object obj = jp.proceed();
+        accumulator.add("Method called successfully: " + methodName);
+        return obj;
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/spring/configuration/AppConfig.java

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+package com.baeldung.spring.configuration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.EnableAspectJAutoProxy;
+
+import com.baeldung.spring.aspect.SpringTestAspect;
+import com.baeldung.spring.service.SpringSuperService;
+
+@Configuration
+@EnableAspectJAutoProxy
+public class AppConfig {
+    @Bean
+    public SpringSuperService springSuperService() {
+        return new SpringSuperService();
+    }
+
+    @Bean
+    public SpringTestAspect springTestAspect() {
+        return new SpringTestAspect();
+    }
+
+    @Bean
+    public List<String> getAccumulator() {
+        return new ArrayList<String>();
+    }
+}

di-modules/cdi/src/main/java/com/baeldung/spring/service/SpringSuperService.java

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+package com.baeldung.spring.service;
+
+public class SpringSuperService {
+    public String getInfoFromService(String code) {
+        return code;
+    }
+}

di-modules/cdi/src/main/resources/META-INF/beans.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
+       bean-discovery-mode="all">
+    <interceptors>
+        <class>com.baeldung.interceptor.AuditedInterceptor</class>
+    </interceptors>
+</beans>

di-modules/cdi/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

di-modules/cdi/src/test/java/com/baeldung/test/InterceptorIntegrationTest.java

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+package com.baeldung.test;
+
+import org.jboss.weld.environment.se.Weld;
+import org.jboss.weld.environment.se.WeldContainer;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.baeldung.interceptor.AuditedInterceptor;
+import com.baeldung.service.SuperService;
+
+public class InterceptorIntegrationTest {
+    Weld weld;
+    WeldContainer container;
+
+    @Before
+    public void init() {
+        weld = new Weld();
+        container = weld.initialize();
+    }
+
+    @After
+    public void shutdown() {
+        weld.shutdown();
+    }
+
+    @Test
+    public void givenTheService_whenMethodAndInterceptorExecuted_thenOK() {
+        SuperService superService = container.select(SuperService.class).get();
+        String code = "123456";
+        superService.deliverService(code);
+
+        Assert.assertTrue(AuditedInterceptor.calledBefore);
+        Assert.assertTrue(AuditedInterceptor.calledAfter);
+    }
+
+}

di-modules/cdi/src/test/java/com/baeldung/test/SpringInterceptorIntegrationTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.test;
+
+import static org.hamcrest.CoreMatchers.is;
+
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.spring.configuration.AppConfig;
+import com.baeldung.spring.service.SpringSuperService;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = { AppConfig.class })
+public class SpringInterceptorIntegrationTest {
+    @Autowired
+    SpringSuperService springSuperService;
+
+    @Autowired
+    private List<String> accumulator;
+
+    //
+
+    @Test
+    public void givenService_whenServiceAndAspectExecuted_thenOk() {
+        String code = "123456";
+        String result = springSuperService.getInfoFromService(code);
+
+        Assert.assertThat(accumulator.size(), is(2));
+        Assert.assertThat(accumulator.get(0), is("Call to getInfoFromService"));
+        Assert.assertThat(accumulator.get(1), is("Method called successfully: getInfoFromService"));
+    }
+
+}

di-modules/cdi/src/test/java/com/baeldung/test/cdi2observers/tests/TextServiceUnitTest.java

@@ -0,0 +1,15 @@
+package com.baeldung.test.cdi2observers.tests;
+
+import com.baeldung.cdi2observers.services.TextService;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TextServiceUnitTest {
+
+    @Test
+    public void givenTextServiceInstance_whenCalledparseText_thenCorrect() {
+        TextService textService = new TextService();
+        assertThat(textService.parseText("Baeldung")).isEqualTo("BAELDUNG");
+    }
+}

di-modules/cdi/src/test/java/com/baeldung/test/dependencyinjection/GifFileEditorUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.test.dependencyinjection;
+
+import com.baeldung.dependencyinjection.imagefileeditors.GifFileEditor;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class GifFileEditorUnitTest {
+    
+    private static GifFileEditor gifFileEditor;
+    
+    
+    @BeforeClass
+    public static void setGifFileEditorInstance() {
+        gifFileEditor = new GifFileEditor();
+    }
+    
+    @Test
+    public void givenGifFileEditorlInstance_whenCalledopenFile_thenOneAssertion() {
+        assertThat(gifFileEditor.openFile("file1.gif")).isEqualTo("Opening GIF file file1.gif");
+    }
+    
+    @Test
+    public void givenGifFileEditorlInstance_whenCallededitFile_thenOneAssertion() {
+        assertThat(gifFileEditor.editFile("file1.gif")).isEqualTo("Editing GIF file file1.gif");
+    }
+    
+    @Test
+    public void givenGifFileEditorInstance_whenCalledwriteFile_thenOneAssertion() {
+        assertThat(gifFileEditor.writeFile("file1.gif")).isEqualTo("Writing GIF file file1.gif");
+    }
+    
+    @Test
+    public void givenGifFileEditorInstance_whenCalledsaveFile_thenOneAssertion() {
+        assertThat(gifFileEditor.saveFile("file1.gif")).isEqualTo("Saving GIF file file1.gif");
+    }
+}

di-modules/cdi/src/test/java/com/baeldung/test/dependencyinjection/ImageProcessorUnitTest.java

@@ -0,0 +1,91 @@
+package com.baeldung.test.dependencyinjection;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.within;
+
+import java.text.ParseException;
+import java.time.LocalTime;
+import java.time.temporal.ChronoUnit;
+
+import org.jboss.weld.environment.se.Weld;
+import org.jboss.weld.environment.se.WeldContainer;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.baeldung.dependencyinjection.imagefileeditors.PngFileEditor;
+import com.baeldung.dependencyinjection.imageprocessors.ImageFileProcessor;
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+
+public class ImageProcessorUnitTest {
+
+    private static ImageFileProcessor imageFileProcessor;
+
+    @BeforeClass
+    public static void setImageProcessorInstance() {
+        Weld weld = new Weld();
+        WeldContainer container = weld.initialize();
+        imageFileProcessor = container.select(ImageFileProcessor.class)
+            .get();
+        container.shutdown();
+    }
+
+    @Test
+    public void givenImageProcessorInstance_whenInjectedPngFileEditorandTimeLoggerInstances_thenTwoAssertions() {
+        assertThat(imageFileProcessor.getImageFileditor()).isInstanceOf(PngFileEditor.class);
+        assertThat(imageFileProcessor.getTimeLogger()).isInstanceOf(TimeLogger.class);
+    }
+
+    @Test
+    public void givenImageProcessorInstance_whenCalledopenFile_thenOneAssertion() throws ParseException {
+        LocalTime currentTime = LocalTime.now();
+
+        String openFileLog = imageFileProcessor.openFile("file1.png");
+        assertThat(openFileLog).contains("Opening PNG file file1.png at: ");
+
+        LocalTime loggedTime = getLoggedTime(openFileLog);
+        assertThat(loggedTime).isCloseTo(currentTime, within(2, ChronoUnit.MINUTES));
+    }
+
+    @Test
+    public void givenImageProcessorInstance_whenCallededitFile_thenOneAssertion() throws ParseException {
+        LocalTime currentTime = LocalTime.now();
+
+        String editFileLog = imageFileProcessor.editFile("file1.png");
+        assertThat(editFileLog).contains("Editing PNG file file1.png at: ");
+
+        LocalTime loggedTime = getLoggedTime(editFileLog);
+        assertThat(loggedTime).isCloseTo(currentTime, within(2, ChronoUnit.MINUTES));
+    }
+
+    @Test
+    public void givenImageProcessorInstance_whenCalledwriteFile_thenOneAssertion() throws ParseException {
+        LocalTime currentTime = LocalTime.now();
+
+        String writeFileLog = imageFileProcessor.writeFile("file1.png");
+        assertThat(writeFileLog).contains("Writing PNG file file1.png at: ");
+
+        LocalTime loggedTime = getLoggedTime(writeFileLog);
+        assertThat(loggedTime).isCloseTo(currentTime, within(2, ChronoUnit.MINUTES));
+    }
+
+    @Test
+    public void givenImageProcessorInstance_whenCalledsaveFile_thenOneAssertion() throws ParseException {
+        LocalTime currentTime = LocalTime.now();
+
+        String saveFileLog = imageFileProcessor.saveFile("file1.png");
+        assertThat(saveFileLog).contains("Saving PNG file file1.png at: ");
+
+        LocalTime loggedTime = getLoggedTime(saveFileLog);
+        assertThat(loggedTime).isCloseTo(currentTime, within(2, ChronoUnit.MINUTES));
+    }
+
+    private LocalTime getLoggedTime(String log) throws ParseException {
+        String logTimeString = log.split("at: ")[1];
+
+        int hour = Integer.valueOf(logTimeString.split(":")[0]);
+        int minutes = Integer.valueOf(logTimeString.split(":")[1]);
+
+        LocalTime loggedTime = LocalTime.of(hour, minutes);
+        return loggedTime;
+    }
+}

di-modules/cdi/src/test/java/com/baeldung/test/dependencyinjection/JpgFileEditorUnitTest.java

@@ -0,0 +1,37 @@
+package com.baeldung.test.dependencyinjection;
+
+import com.baeldung.dependencyinjection.imagefileeditors.JpgFileEditor;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class JpgFileEditorUnitTest {
+    
+    private static JpgFileEditor jpgFileUtil;
+    
+    
+    @BeforeClass
+    public static void setJpgFileEditorInstance() {
+        jpgFileUtil = new JpgFileEditor();
+    }
+    
+    @Test
+    public void givenJpgFileEditorInstance_whenCalledopenFile_thenOneAssertion() {
+        assertThat(jpgFileUtil.openFile("file1.jpg")).isEqualTo("Opening JPG file file1.jpg");
+    }
+    
+    @Test
+    public void givenJpgFileEditorlInstance_whenCallededitFile_thenOneAssertion() {
+        assertThat(jpgFileUtil.editFile("file1.gif")).isEqualTo("Editing JPG file file1.gif");
+    }
+    
+    @Test
+    public void givenJpgFileEditorInstance_whenCalledwriteFile_thenOneAssertion() {
+        assertThat(jpgFileUtil.writeFile("file1.jpg")).isEqualTo("Writing JPG file file1.jpg");
+    }
+    
+    @Test
+    public void givenJpgFileEditorInstance_whenCalledsaveFile_thenOneAssertion() {
+        assertThat(jpgFileUtil.saveFile("file1.jpg")).isEqualTo("Saving JPG file file1.jpg");
+    }
+}

di-modules/cdi/src/test/java/com/baeldung/test/dependencyinjection/PngFileEditorUnitTest.java

@@ -0,0 +1,39 @@
+package com.baeldung.test.dependencyinjection;
+
+import com.baeldung.dependencyinjection.imagefileeditors.PngFileEditor;
+import com.baeldung.dependencyinjection.qualifiers.PngFileEditorQualifier;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+@PngFileEditorQualifier
+public class PngFileEditorUnitTest {
+    
+    private static PngFileEditor pngFileEditor;
+    
+    
+    @BeforeClass
+    public static void setPngFileEditorInstance() {
+        pngFileEditor = new PngFileEditor();
+    }
+    
+    @Test
+    public void givenPngFileEditorInstance_whenCalledopenFile_thenOneAssertion() {
+        assertThat(pngFileEditor.openFile("file1.png")).isEqualTo("Opening PNG file file1.png");
+    }
+    
+    @Test
+    public void givenPngFileEditorInstance_whenCallededitFile_thenOneAssertion() {
+        assertThat(pngFileEditor.editFile("file1.png")).isEqualTo("Editing PNG file file1.png");
+    }
+    
+    @Test
+    public void givenPngFileEditorInstance_whenCalledwriteFile_thenOneAssertion() {
+        assertThat(pngFileEditor.writeFile("file1.png")).isEqualTo("Writing PNG file file1.png");
+    }
+    
+    @Test
+    public void givenPngFileEditorInstance_whenCalledsaveFile_thenOneAssertion() {
+        assertThat(pngFileEditor.saveFile("file1.png")).isEqualTo("Saving PNG file file1.png");
+    }
+}

di-modules/cdi/src/test/java/com/baeldung/test/dependencyinjection/TimeLoggerFactoryUnitTest.java

@@ -0,0 +1,14 @@
+package com.baeldung.test.dependencyinjection;
+
+import com.baeldung.dependencyinjection.factories.TimeLoggerFactory;
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.Test;
+
+public class TimeLoggerFactoryUnitTest {
+    @Test
+    public void givenTimeLoggerFactory_whenCalledgetTimeLogger_thenOneAssertion() {
+        TimeLoggerFactory timeLoggerFactory = new TimeLoggerFactory();
+        assertThat(timeLoggerFactory.getTimeLogger()).isInstanceOf(TimeLogger.class);
+    }
+}

di-modules/cdi/src/test/java/com/baeldung/test/dependencyinjection/TimeLoggerUnitTest.java

@@ -0,0 +1,20 @@
+package com.baeldung.test.dependencyinjection;
+
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import static org.assertj.core.api.Assertions.assertThat;
+import org.junit.Test;
+
+public class TimeLoggerUnitTest {
+    
+    
+    @Test
+    public void givenTimeLoggerInstance_whenCalledgetLogTime_thenOneAssertion() {
+        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm");
+        Calendar calendar = Calendar.getInstance();
+        TimeLogger timeLogger = new TimeLogger(dateFormat, calendar);
+        String currentTime = dateFormat.format(calendar.getTime());
+        assertThat(timeLogger.getTime()).isEqualTo(currentTime);
+    }
+}