testing work with JUnit 5

spring-5/src/main/resources/application.properties

@@ -1,4 +1,6 @@
 server.port=8081
 
 security.user.name=user
-security.user.password=pass
+security.user.password=pass
+
+logging.level.root=INFO

spring-5/src/test/java/com/baeldung/IntegrationTestExample1.java

@@ -0,0 +1,29 @@
+package com.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class IntegrationTestExample1 {
+
+    @Test
+    public void test1a() {
+        block(3000);
+    }
+
+    @Test
+    public void test1b() {
+        block(3000);
+    }
+
+    public static void block(long ms) {
+        try {
+            Thread.sleep(ms);
+        } catch (InterruptedException e) {
+            System.out.println("Thread interrupted");
+        }
+    }
+}

spring-5/src/test/java/com/baeldung/IntegrationTestExample2.java

@@ -0,0 +1,29 @@
+package com.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class IntegrationTestExample2 {
+
+    @Test
+    public void test1a() {
+        block(3000);
+    }
+
+    @Test
+    public void test1b() {
+        block(3000);
+    }
+
+    public static void block(long ms) {
+        try {
+            Thread.sleep(ms);
+        } catch (InterruptedException e) {
+            System.out.println("Thread Interrupted");
+        }
+    }
+}

spring-5/src/test/java/com/baeldung/ParallelTestExample.java

@@ -0,0 +1,24 @@
+package com.baeldung;
+
+import org.junit.Test;
+import org.junit.experimental.ParallelComputer;
+import org.junit.runner.Computer;
+import org.junit.runner.JUnitCore;
+
+public class ParallelTestExample {
+
+    @Test
+    public void runTests() {
+        final Class<?>[] classes = { IntegrationTestExample1.class, IntegrationTestExample2.class };
+
+        JUnitCore.runClasses(new Computer(), classes);
+    }
+
+    @Test
+    public void runTestsInParallel() {
+        final Class<?>[] classes = { IntegrationTestExample1.class, IntegrationTestExample2.class };
+
+        JUnitCore.runClasses(new ParallelComputer(true, true), classes);
+    }
+
+}