Parallel Test Execution for JUnit 5

junit5/README.md

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+## JUnit5
+
+This module contains articles about the JUnit 5
+
+### Relevant Articles:
+

junit5/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>junit5</artifactId>
+    <name>junit5</name>
+
+    <parent>
+        <artifactId>parent-modules</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.8.1</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.8.1</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

junit5/src/test/java/com/baeldung/junit5/A_UnitTest.java

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+package com.baeldung.junit5;
+
+import org.junit.jupiter.api.Test;
+
+public class A_UnitTest {
+
+    @Test
+    public void first() throws Exception{
+        System.out.println("Test A first() start => " + Thread.currentThread().getName());
+        Thread.sleep(500);
+        System.out.println("Test A first() end => " + Thread.currentThread().getName());
+    }
+
+    @Test
+    public void second() throws Exception{
+        System.out.println("Test A second() start => " + Thread.currentThread().getName());
+        Thread.sleep(500);
+        System.out.println("Test A second() end => " + Thread.currentThread().getName());
+    }
+
+}

junit5/src/test/java/com/baeldung/junit5/B_UnitTest.java

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+package com.baeldung.junit5;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.parallel.Execution;
+import org.junit.jupiter.api.parallel.ExecutionMode;
+
+public class B_UnitTest {
+
+    @Test
+    public void first() throws Exception{
+        System.out.println("Test B first() start => " + Thread.currentThread().getName());
+        Thread.sleep(500);
+        System.out.println("Test B first() end => " + Thread.currentThread().getName());
+    }
+
+    @Test
+    public void second() throws Exception{
+        System.out.println("Test B second() start => " + Thread.currentThread().getName());
+        Thread.sleep(500);
+        System.out.println("Test B second() end => " + Thread.currentThread().getName());
+    }
+
+}

junit5/src/test/java/com/baeldung/junit5/C_UnitTest.java

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+package com.baeldung.junit5;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.parallel.ResourceLock;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class C_UnitTest {
+
+    private List<String> resources;
+
+    @BeforeEach
+    void before() {
+        resources = new ArrayList<>();
+        resources.add("test");
+    }
+
+    @AfterEach
+    void after() {
+        resources.clear();
+    }
+
+    @Test
+    @ResourceLock(value = "resources")
+    public void first() throws Exception {
+        System.out.println("Test C first() start => " + Thread.currentThread().getName());
+        resources.add("first");
+        System.out.println(resources);
+        Thread.sleep(500);
+        System.out.println("Test C first() end => " + Thread.currentThread().getName());
+    }
+
+    @Test
+    @ResourceLock(value = "resources")
+    public void second() throws Exception {
+        System.out.println("Test C second() start => " + Thread.currentThread().getName());
+        resources.add("second");
+        System.out.println(resources);
+        Thread.sleep(500);
+        System.out.println("Test C second() end => " + Thread.currentThread().getName());
+    }
+}

junit5/src/test/resources/junit-platform.properties

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+junit.jupiter.execution.parallel.enabled = true
+junit.jupiter.execution.parallel.config.strategy=dynamic
+junit.jupiter.execution.parallel.mode.default = concurrent
+junit.jupiter.execution.parallel.mode.classes.default = concurrent

pom.xml

@@ -472,6 +472,7 @@
                 <module>json-path</module>
                 <module>jsoup</module>
                 <module>jta</module>
+                <module>junit5</module>
                 <module>kubernetes</module>
                 <module>ksqldb</module>
                 <!-- <module>lagom</module> --> <!-- Not a maven project -->