Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

testing-modules/junit-5/README.md

@@ -0,0 +1,8 @@
+### Relevant Articles:
+- [A Guide to JUnit 5 Extensions](https://www.baeldung.com/junit-5-extensions)
+- [Inject Parameters into JUnit Jupiter Unit Tests](https://www.baeldung.com/junit-5-parameters)
+- [Mockito and JUnit 5 – Using ExtendWith](https://www.baeldung.com/mockito-junit-5-extension)
+- [The Order of Tests in JUnit](https://www.baeldung.com/junit-5-test-order)
+- [Running JUnit Tests Programmatically, from a Java Application](https://www.baeldung.com/junit-tests-run-programmatically-from-java)
+- [Testing an Abstract Class With JUnit](https://www.baeldung.com/junit-test-abstract-class)
+- [Guide to Dynamic Tests in JUnit 5](https://www.baeldung.com/junit5-dynamic-tests)

testing-modules/junit-5/pom.xml

@@ -0,0 +1,142 @@
+<?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>
+    <!-- NOT NEEDED - JSP <groupId>com.baeldung</groupId> -->
+    <artifactId>junit-5</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <name>junit-5</name>
+    <description>Intro to JUnit 5</description>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../../</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-engine</artifactId>
+            <version>${junit.platform.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit.jupiter.version}</version>
+        </dependency>    
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit.platform.version}</version>
+            <scope>test</scope>
+        </dependency>
+         <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <version>${junit.vintage.version}</version>
+            <scope>test</scope>
+        </dependency>
+         <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-migrationsupport</artifactId>
+            <version>${junit.vintage.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>${log4j2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-module-junit4</artifactId>
+            <version>${powermock.version}</version>
+            <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>junit</groupId>
+                    <artifactId>junit</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-junit-jupiter</artifactId>
+            <version>${mockito.junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-api-mockito2</artifactId>
+            <version>${powermock.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <resources>
+            <resource>
+                <directory>src/test/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+        <plugins>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven-surefire-plugin.version}</version>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>${exec-maven-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <mainClass>com.baeldung.TestLauncher</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <junit.jupiter.version>5.4.2</junit.jupiter.version>
+        <mockito.junit.jupiter.version>2.23.0</mockito.junit.jupiter.version>
+        <junit.platform.version>1.4.2</junit.platform.version>
+        <junit.vintage.version>5.4.2</junit.vintage.version>
+        <log4j2.version>2.8.2</log4j2.version>
+        <powermock.version>2.0.0-RC.1</powermock.version>
+        <maven-surefire-plugin.version>2.22.0</maven-surefire-plugin.version>
+        <exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
+        <spring.version>5.0.1.RELEASE</spring.version>
+    </properties>
+
+</project>

testing-modules/junit-5/src/main/java/com/baeldung/abstractclass/abstractmethod/AbstractMethodCalling.java

@@ -0,0 +1,17 @@
+/**
+ * 
+ */
+package com.baeldung.abstractclass.abstractmethod;
+
+/**
+ * When method calls abstract method.
+ */
+public abstract class AbstractMethodCalling {
+
+    public abstract String abstractFunc();
+
+    public String defaultImpl() {
+        String res = abstractFunc();
+        return (res == null) ? "Default" : (res + " Default");
+    }
+}

testing-modules/junit-5/src/main/java/com/baeldung/abstractclass/indepedentmethod/AbstractIndependent.java

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+package com.baeldung.abstractclass.indepedentmethod;
+
+/**
+ * Test Independent Method
+ * 
+ */
+public abstract class AbstractIndependent {
+
+    public abstract int abstractFunc();
+
+    public String defaultImpl() {
+        return "DEFAULT-1";
+    }
+}

testing-modules/junit-5/src/main/java/com/baeldung/abstractclass/indepedentmethod/ConcreteImpl.java

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+package com.baeldung.abstractclass.indepedentmethod;
+
+public class ConcreteImpl extends AbstractIndependent {
+
+    @Override
+    public int abstractFunc() {
+        return 4;
+    }
+
+}

testing-modules/junit-5/src/main/java/com/baeldung/abstractclass/instancefields/AbstractInstanceFields.java

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+package com.baeldung.abstractclass.instancefields;
+
+/**
+ * Test Independent Method
+ */
+public abstract class AbstractInstanceFields {
+
+    protected int count;
+    private boolean active = false;
+
+    public abstract int abstractFunc();
+
+    public String testFunc() {
+        String response;
+        if (count > 5) {
+            response = "Overflow";
+        } else {
+            response = active ? "Added" : "Blocked";
+        }
+        return response;
+    }
+}

testing-modules/junit-5/src/main/java/com/baeldung/abstractclass/privatemethod/AbstractPrivateMethods.java

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+package com.baeldung.abstractclass.privatemethod;
+
+import java.time.LocalDateTime;
+
+public abstract class AbstractPrivateMethods {
+
+    public abstract int abstractFunc();
+
+    public String defaultImpl() {
+        return getCurrentDateTime() + "DEFAULT-1";
+    }
+
+    private String getCurrentDateTime() {
+        return LocalDateTime.now()
+            .toString();
+    }
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/User.java

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+package com.baeldung.junit5.mockito;
+
+public class User {
+    
+    private Integer id;
+    private String name;
+    private int age;
+    
+    public User() {
+    }
+    
+    public User(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+    
+    public Integer getId() {
+        return id;
+    }
+    public void setId(Integer id) {
+        this.id = id;
+    }
+    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;
+    }
+
+    @Override
+    public String toString() {
+        return "User [id=" + id + ", name=" + name + ", age=" + age + "]";
+    }
+
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/repository/MailClient.java

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+package com.baeldung.junit5.mockito.repository;
+
+import com.baeldung.junit5.mockito.User;
+
+public interface MailClient {
+
+    void sendUserRegistrationMail(User user);
+    
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/repository/SettingRepository.java

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+package com.baeldung.junit5.mockito.repository;
+
+public interface SettingRepository {
+    
+    int getUserMinAge();
+
+    int getUserNameMinLength();
+
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/repository/UserRepository.java

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+package com.baeldung.junit5.mockito.repository;
+
+import com.baeldung.junit5.mockito.User;
+
+public interface UserRepository {
+
+    User insert(User user);
+    boolean isUsernameAlreadyExists(String userName);
+    
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/service/DefaultUserService.java

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+package com.baeldung.junit5.mockito.service;
+
+import com.baeldung.junit5.mockito.User;
+import com.baeldung.junit5.mockito.repository.MailClient;
+import com.baeldung.junit5.mockito.repository.SettingRepository;
+import com.baeldung.junit5.mockito.repository.UserRepository;
+
+public class DefaultUserService implements UserService {
+    
+    private UserRepository userRepository;
+    private SettingRepository settingRepository;
+    private MailClient mailClient;
+    
+    public DefaultUserService(UserRepository userRepository, SettingRepository settingRepository, MailClient mailClient) {
+        this.userRepository = userRepository;
+        this.settingRepository = settingRepository;
+        this.mailClient = mailClient;
+    }
+
+    @Override
+    public User register(User user) {
+        validate(user);
+        User insertedUser = userRepository.insert(user);
+        mailClient.sendUserRegistrationMail(insertedUser);
+        return insertedUser;
+    }
+
+    private void validate(User user) {
+        if(user.getName() == null) {
+            throw new RuntimeException(Errors.USER_NAME_REQUIRED);
+        }
+
+        if(user.getName().length() < settingRepository.getUserNameMinLength()) {
+            throw new RuntimeException(Errors.USER_NAME_SHORT);
+        }
+        
+        if(user.getAge() < settingRepository.getUserMinAge()) {
+            throw new RuntimeException(Errors.USER_AGE_YOUNG);
+        }
+        
+        if(userRepository.isUsernameAlreadyExists(user.getName())) {
+            throw new RuntimeException(Errors.USER_NAME_DUPLICATE);
+        }
+    }
+
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/service/Errors.java

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+package com.baeldung.junit5.mockito.service;
+
+public class Errors {
+
+    public static final String USER_NAME_REQUIRED = "user.name.required";
+    public static final String USER_NAME_SHORT = "user.name.short";
+    public static final String USER_AGE_YOUNG = "user.age.young";
+    public static final String USER_NAME_DUPLICATE = "user.name.duplicate";
+    
+}

testing-modules/junit-5/src/main/java/com/baeldung/junit5/mockito/service/UserService.java

@@ -0,0 +1,9 @@
+package com.baeldung.junit5.mockito.service;
+
+import com.baeldung.junit5.mockito.User;
+
+public interface UserService {
+    
+    User register(User user);
+
+}

testing-modules/junit-5/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>

testing-modules/junit-5/src/test/java/com/baeldung/EmployeesUnitTest.java

@@ -0,0 +1,50 @@
+package com.baeldung;
+
+import java.sql.SQLException;
+
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import com.baeldung.extensions.EmployeeDaoParameterResolver;
+import com.baeldung.extensions.EmployeeDatabaseSetupExtension;
+import com.baeldung.extensions.EnvironmentExtension;
+import com.baeldung.extensions.IgnoreFileNotFoundExceptionExtension;
+import com.baeldung.extensions.LoggingExtension;
+import com.baeldung.helpers.Employee;
+import com.baeldung.helpers.EmployeeJdbcDao;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@ExtendWith({ EnvironmentExtension.class, EmployeeDatabaseSetupExtension.class, EmployeeDaoParameterResolver.class })
+@ExtendWith(LoggingExtension.class)
+@ExtendWith(IgnoreFileNotFoundExceptionExtension.class)
+public class EmployeesUnitTest {
+
+    private EmployeeJdbcDao employeeDao;
+
+    private Logger logger;
+
+    public EmployeesUnitTest(EmployeeJdbcDao employeeDao) {
+        this.employeeDao = employeeDao;
+    }
+
+    @Test
+    public void whenAddEmployee_thenGetEmployee() throws SQLException {
+        Employee emp = new Employee(1, "john");
+        employeeDao.add(emp);
+        assertEquals(1, employeeDao.findAll()
+            .size());
+    }
+
+    @Test
+    public void whenGetEmployees_thenEmptyList() throws SQLException {
+        assertEquals(0, employeeDao.findAll()
+            .size());
+    }
+
+    public void setLogger(Logger logger) {
+        this.logger = logger;
+    }
+
+}

testing-modules/junit-5/src/test/java/com/baeldung/MultipleExtensionsUnitTest.java

@@ -0,0 +1,28 @@
+package com.baeldung;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.extension.RegisterExtension;
+import com.baeldung.extensions.EmployeeDatabaseSetupExtension;
+
+public class MultipleExtensionsUnitTest {
+
+    @Order(1)
+    @RegisterExtension
+    static EmployeeDatabaseSetupExtension SECOND_DB =
+      new EmployeeDatabaseSetupExtension("jdbc:h2:mem:DbTwo;DB_CLOSE_DELAY=-1", "org.h2.Driver", "sa", "");
+
+    @Order(0)
+    @RegisterExtension
+    static EmployeeDatabaseSetupExtension FIRST_DB =
+      new EmployeeDatabaseSetupExtension("jdbc:h2:mem:DbOne;DB_CLOSE_DELAY=-1", "org.h2.Driver", "sa", "");
+
+    @RegisterExtension
+    static EmployeeDatabaseSetupExtension LAST_DB =
+      new EmployeeDatabaseSetupExtension("jdbc:h2:mem:DbLast;DB_CLOSE_DELAY=-1", "org.h2.Driver", "sa", "");
+
+    @Test
+    public void justDemonstratingTheIdea() {
+        // empty test
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/NestedUnitTest.java

@@ -0,0 +1,81 @@
+package com.baeldung;
+
+import java.util.EmptyStackException;
+import java.util.Stack;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+public class NestedUnitTest {
+
+    Stack<Object> stack;
+
+    @Test
+    @DisplayName("is instantiated with new Stack()")
+    void isInstantiatedWithNew() {
+        new Stack<>();
+    }
+
+    @Nested
+    @DisplayName("when new")
+    class WhenNew {
+
+        @BeforeEach
+        void init() {
+            stack = new Stack<>();
+        }
+
+        @Test
+        @DisplayName("is empty")
+        void isEmpty() {
+            Assertions.assertTrue(stack.isEmpty());
+        }
+
+        @Test
+        @DisplayName("throws EmptyStackException when popped")
+        void throwsExceptionWhenPopped() {
+            Assertions.assertThrows(EmptyStackException.class, () -> stack.pop());
+        }
+
+        @Test
+        @DisplayName("throws EmptyStackException when peeked")
+        void throwsExceptionWhenPeeked() {
+            Assertions.assertThrows(EmptyStackException.class, () -> stack.peek());
+        }
+
+        @Nested
+        @DisplayName("after pushing an element")
+        class AfterPushing {
+
+            String anElement = "an element";
+
+            @BeforeEach
+            void init() {
+                stack.push(anElement);
+            }
+
+            @Test
+            @DisplayName("it is no longer empty")
+            void isEmpty() {
+                Assertions.assertFalse(stack.isEmpty());
+            }
+
+            @Test
+            @DisplayName("returns the element when popped and is empty")
+            void returnElementWhenPopped() {
+                Assertions.assertEquals(anElement, stack.pop());
+                Assertions.assertTrue(stack.isEmpty());
+            }
+
+            @Test
+            @DisplayName("returns the element when peeked but remains not empty")
+            void returnElementWhenPeeked() {
+                Assertions.assertEquals(anElement, stack.peek());
+                Assertions.assertFalse(stack.isEmpty());
+            }
+        }
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/ProgrammaticEmployeesUnitTest.java

@@ -0,0 +1,40 @@
+package com.baeldung;
+
+import java.sql.SQLException;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import com.baeldung.helpers.Employee;
+import com.baeldung.extensions.EmployeeDaoParameterResolver;
+import com.baeldung.extensions.EmployeeDatabaseSetupExtension;
+import com.baeldung.extensions.EnvironmentExtension;
+import com.baeldung.helpers.EmployeeJdbcDao;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@ExtendWith({ EnvironmentExtension.class, EmployeeDaoParameterResolver.class })
+public class ProgrammaticEmployeesUnitTest {
+
+    private EmployeeJdbcDao employeeDao;
+
+    @RegisterExtension static EmployeeDatabaseSetupExtension DB =
+      new EmployeeDatabaseSetupExtension("jdbc:h2:mem:AnotherDb;DB_CLOSE_DELAY=-1", "org.h2.Driver", "sa", "");
+
+    public ProgrammaticEmployeesUnitTest(EmployeeJdbcDao employeeDao) {
+        this.employeeDao = employeeDao;
+    }
+
+    @Test
+    public void whenAddEmployee_thenGetEmployee() throws SQLException {
+        Employee emp = new Employee(1, "john");
+        employeeDao.add(emp);
+        assertEquals(1, employeeDao.findAll().size());
+    }
+
+    @Test
+    public void whenGetEmployees_thenEmptyList() throws SQLException {
+        assertEquals(0, employeeDao.findAll().size());
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/StringUtils.java

@@ -0,0 +1,11 @@
+package com.baeldung;
+
+public final class StringUtils {
+
+    public static Double convertToDouble(String str) {
+        if (str == null) {
+            return null;
+        }
+        return Double.valueOf(str);
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/TaggedUnitTest.java

@@ -0,0 +1,16 @@
+package com.baeldung;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+@Tag("Test case")
+public class TaggedUnitTest {
+
+    @Test
+    @Tag("Method")
+    void testMethod() {
+        assertEquals(2 + 2, 4);
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/TestLauncher.java

@@ -0,0 +1,39 @@
+package com.baeldung;
+
+import org.junit.platform.launcher.LauncherDiscoveryRequest;
+import org.junit.platform.launcher.TestExecutionListener;
+import org.junit.platform.launcher.TestPlan;
+import org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder;
+import org.junit.platform.launcher.core.LauncherFactory;
+import org.junit.platform.launcher.listeners.SummaryGeneratingListener;
+
+import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
+
+import java.io.PrintWriter;
+
+import org.junit.platform.launcher.Launcher;
+
+public class TestLauncher {
+    public static void main(String[] args) {
+
+        //@formatter:off
+        LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
+                .selectors(selectClass("com.baeldung.EmployeesUnitTest"))
+                .configurationParameter("junit.conditions.deactivate", "com.baeldung.extensions.*")
+                .configurationParameter("junit.jupiter.extensions.autodetection.enabled", "true")
+                .build();
+        
+        //@formatter:on
+
+        TestPlan plan = LauncherFactory.create()
+            .discover(request);
+        Launcher launcher = LauncherFactory.create();
+        SummaryGeneratingListener summaryGeneratingListener = new SummaryGeneratingListener();
+        launcher.execute(request, new TestExecutionListener[] { summaryGeneratingListener });
+        launcher.execute(request);
+
+        summaryGeneratingListener.getSummary()
+            .printTo(new PrintWriter(System.out));
+
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/abstractclass/abstractmethod/AbstractMethodCallingUnitTest.java

@@ -0,0 +1,38 @@
+package com.baeldung.abstractclass.abstractmethod;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+public class AbstractMethodCallingUnitTest {
+
+    private AbstractMethodCalling cls;
+
+    @BeforeEach
+    public void setup() {
+        cls = Mockito.mock(AbstractMethodCalling.class);
+    }
+
+    @Test
+    public void givenDefaultImpl_whenMockAbstractFunc_thenExpectedBehaviour() {
+        Mockito
+          .when(cls.abstractFunc())
+          .thenReturn("Abstract");
+        Mockito
+          .doCallRealMethod()
+          .when(cls)
+          .defaultImpl();
+
+        // validate result by mock abstractFunc's behaviour
+        Assertions.assertEquals("Abstract Default", cls.defaultImpl());
+
+        // check the value with null response from abstract method
+        Mockito
+          .doReturn(null)
+          .when(cls)
+          .abstractFunc();
+        Assertions.assertEquals("Default", cls.defaultImpl());
+    }
+
+}

testing-modules/junit-5/src/test/java/com/baeldung/abstractclass/indepedentmethod/AbstractIndependentUnitTest.java

@@ -0,0 +1,25 @@
+/**
+ * 
+ */
+package com.baeldung.abstractclass.indepedentmethod;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+public class AbstractIndependentUnitTest {
+
+    @Test
+    public void givenNonAbstractMethod_whenConcreteImpl_testCorrectBehaviour() {
+        ConcreteImpl conClass = new ConcreteImpl();
+        String actual = conClass.defaultImpl();
+
+        Assertions.assertEquals("DEFAULT-1", actual);
+    }
+
+    @Test
+    public void givenNonAbstractMethod_whenMockitoMock_testCorrectBehaviour() {
+        AbstractIndependent absCls = Mockito.mock(AbstractIndependent.class, Mockito.CALLS_REAL_METHODS);
+        Assertions.assertEquals("DEFAULT-1", absCls.defaultImpl());
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/abstractclass/instancefields/AbstractInstanceFieldsUnitTest.java

@@ -0,0 +1,42 @@
+package com.baeldung.abstractclass.instancefields;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.reflect.Whitebox;
+
+public class AbstractInstanceFieldsUnitTest {
+
+    @Test
+    public void givenProtectedInstanceField_whenMockClassCountGt5_thenTestNonAbstractMethod() {
+
+        // mock
+        AbstractInstanceFields instClass = Mockito.mock(AbstractInstanceFields.class);
+        Mockito
+          .doCallRealMethod()
+          .when(instClass)
+          .testFunc();
+
+        // set counter greater than 5
+        instClass.count = 7;
+
+        // compare the result
+        Assertions.assertEquals("Overflow", instClass.testFunc());
+    }
+
+    @Test
+    public void givenNonAbstractMethodAndPrivateField_whenPowerMockitoAndActiveFieldTrue_thenCorrectBehaviour() {
+
+        AbstractInstanceFields instClass = PowerMockito.mock(AbstractInstanceFields.class);
+        PowerMockito
+          .doCallRealMethod()
+          .when(instClass)
+          .testFunc();
+        Whitebox.setInternalState(instClass, "active", true);
+
+        // compare the expected result with actual
+        Assertions.assertEquals("Added", instClass.testFunc());
+    }
+
+}

testing-modules/junit-5/src/test/java/com/baeldung/abstractclass/privatemethod/AbstractPrivateMethodsUnitTest.java

@@ -0,0 +1,41 @@
+/**
+ *
+ */
+package com.baeldung.abstractclass.privatemethod;
+
+import org.junit.Test;
+import org.junit.jupiter.api.Assertions;
+import org.junit.runner.RunWith;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+import java.time.LocalDateTime;
+
+/**
+ * Providing custom values for private methods using powermock
+ *
+ */
+@RunWith(PowerMockRunner.class)
+@PrepareForTest(AbstractPrivateMethods.class)
+public class AbstractPrivateMethodsUnitTest {
+
+    @Test
+    public void givenNonAbstractMethodAndCallPrivateMethod_whenMockPrivateMethod_thenVerifyBehaviour() throws Exception {
+        AbstractPrivateMethods mockClass = PowerMockito.mock(AbstractPrivateMethods.class);
+
+        String dateTime = LocalDateTime
+          .now()
+          .toString();
+        PowerMockito
+          .doCallRealMethod()
+          .when(mockClass)
+          .defaultImpl();
+        PowerMockito
+          .doReturn(dateTime)
+          .when(mockClass, "getCurrentDateTime");// .thenReturn(dateTime);
+        String actual = mockClass.defaultImpl();
+        Assertions.assertEquals(dateTime + "DEFAULT-1", actual);
+    }
+
+}

testing-modules/junit-5/src/test/java/com/baeldung/dynamictests/DynamicTestsUnitTest.java

@@ -0,0 +1,124 @@
+package com.baeldung.dynamictests;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.DynamicTest;
+import org.junit.jupiter.api.TestFactory;
+import org.junit.jupiter.api.function.ThrowingConsumer;
+
+
+public class DynamicTestsUnitTest {
+
+    @TestFactory
+    Collection<DynamicTest> dynamicTestsWithCollection() {
+        return Arrays.asList(DynamicTest.dynamicTest("Add test", () -> assertEquals(2, Math.addExact(1, 1))), DynamicTest.dynamicTest("Multiply Test", () -> assertEquals(4, Math.multiplyExact(2, 2))));
+    }
+
+    @TestFactory
+    Iterable<DynamicTest> dynamicTestsWithIterable() {
+        return Arrays.asList(DynamicTest.dynamicTest("Add test", () -> assertEquals(2, Math.addExact(1, 1))), DynamicTest.dynamicTest("Multiply Test", () -> assertEquals(4, Math.multiplyExact(2, 2))));
+    }
+
+    @TestFactory
+    Iterator<DynamicTest> dynamicTestsWithIterator() {
+        return Arrays.asList(DynamicTest.dynamicTest("Add test", () -> assertEquals(2, Math.addExact(1, 1))), DynamicTest.dynamicTest("Multiply Test", () -> assertEquals(4, Math.multiplyExact(2, 2))))
+            .iterator();
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsFromIntStream() {
+        return IntStream.iterate(0, n -> n + 2)
+            .limit(10)
+            .mapToObj(n -> DynamicTest.dynamicTest("test" + n, () -> assertTrue(n % 2 == 0)));
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsFromStream() {
+
+        // sample input and output
+        List<String> inputList = Arrays.asList("www.somedomain.com", "www.anotherdomain.com", "www.yetanotherdomain.com");
+        List<String> outputList = Arrays.asList("154.174.10.56", "211.152.104.132", "178.144.120.156");
+
+        // input generator that generates inputs using inputList
+        Iterator<String> inputGenerator = inputList.iterator();
+
+        // a display name generator that creates a different name based on the input
+        Function<String, String> displayNameGenerator = (input) -> "Resolving: " + input;
+
+        // the test executor, which actually has the logic of how to execute the test case
+        DomainNameResolver resolver = new DomainNameResolver();
+        ThrowingConsumer<String> testExecutor = (input) -> {
+            int id = inputList.indexOf(input);
+            assertEquals(outputList.get(id), resolver.resolveDomain(input));
+        };
+
+        // combine everything and return a Stream of DynamicTest
+        return DynamicTest.stream(inputGenerator, displayNameGenerator, testExecutor);
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsFromStreamInJava8() {
+
+        DomainNameResolver resolver = new DomainNameResolver();
+
+        List<String> inputList = Arrays.asList("www.somedomain.com", "www.anotherdomain.com", "www.yetanotherdomain.com");
+        List<String> outputList = Arrays.asList("154.174.10.56", "211.152.104.132", "178.144.120.156");
+
+        return inputList.stream()
+            .map(dom -> DynamicTest.dynamicTest("Resolving: " + dom, () -> {
+                int id = inputList.indexOf(dom);
+                assertEquals(outputList.get(id), resolver.resolveDomain(dom));
+            }));
+
+    }
+
+    @TestFactory
+    Stream<DynamicTest> dynamicTestsForEmployeeWorkflows() {
+        List<Employee> inputList = Arrays.asList(new Employee(1, "Fred"), new Employee(2), new Employee(3, "John"));
+
+        EmployeeDao dao = new EmployeeDao();
+        Stream<DynamicTest> saveEmployeeStream = inputList.stream()
+            .map(emp -> DynamicTest.dynamicTest("saveEmployee: " + emp.toString(), () -> {
+                Employee returned = dao.save(emp.getId());
+                assertEquals(returned.getId(), emp.getId());
+            }));
+
+        Stream<DynamicTest> saveEmployeeWithFirstNameStream = inputList.stream()
+            .filter(emp -> !emp.getFirstName()
+                .isEmpty())
+            .map(emp -> DynamicTest.dynamicTest("saveEmployeeWithName" + emp.toString(), () -> {
+                Employee returned = dao.save(emp.getId(), emp.getFirstName());
+                assertEquals(returned.getId(), emp.getId());
+                assertEquals(returned.getFirstName(), emp.getFirstName());
+            }));
+
+        return Stream.concat(saveEmployeeStream, saveEmployeeWithFirstNameStream);
+    }
+
+    class DomainNameResolver {
+
+        private Map<String, String> ipByDomainName = new HashMap<>();
+
+        DomainNameResolver() {
+            this.ipByDomainName.put("www.somedomain.com", "154.174.10.56");
+            this.ipByDomainName.put("www.anotherdomain.com", "211.152.104.132");
+            this.ipByDomainName.put("www.yetanotherdomain.com", "178.144.120.156");
+        }
+
+        public String resolveDomain(String domainName) {
+            return ipByDomainName.get(domainName);
+        }
+    }
+
+}

testing-modules/junit-5/src/test/java/com/baeldung/dynamictests/Employee.java

@@ -0,0 +1,38 @@
+package com.baeldung.dynamictests;
+
+public class Employee {
+
+    private long id;
+    private String firstName;
+
+    public Employee(long id) {
+        this.id = id;
+        this.firstName = "";
+    }
+
+    public Employee(long id, String firstName) {
+        this.id = id;
+        this.firstName = firstName;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    @Override
+    public String toString() {
+        return "Employee [id=" + id + ", firstName=" + firstName + "]";
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/dynamictests/EmployeeDao.java

@@ -0,0 +1,16 @@
+package com.baeldung.dynamictests;
+
+public class EmployeeDao {
+
+    public Employee save(long id) {
+        return new Employee(id);
+    }
+
+    public Employee save(long id, String firstName) {
+        return new Employee(id, firstName);
+    }
+
+    public Employee update(Employee employee) {
+        return employee;
+    }
+}

testing-modules/junit-5/src/test/java/com/baeldung/extensions/EmployeeDaoParameterResolver.java

@@ -0,0 +1,25 @@
+package com.baeldung.extensions;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+import com.baeldung.helpers.EmployeeJdbcDao;
+import com.baeldung.helpers.JdbcConnectionUtil;
+
+public class EmployeeDaoParameterResolver implements ParameterResolver {
+
+    @Override
+    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        return parameterContext.getParameter()
+            .getType()
+            .equals(EmployeeJdbcDao.class);
+    }
+
+    @Override
+    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
+        return new EmployeeJdbcDao(JdbcConnectionUtil.getConnection());
+    }
+
+}