- TestListeners Registration can be performed using the Launcher API

junit-engine-api/src/main/java/org/junit/gen5/engine/TestListenerRegistry.java

@@ -1,19 +1,21 @@
 package org.junit.gen5.engine;
 
-import java.util.ServiceLoader;
+import java.util.LinkedList;
+import java.util.List;
 import java.util.function.Consumer;
 
 /**
  * @author Stefan Bechtold
  * @since 5.0
  */
 public class TestListenerRegistry {
-  private static Iterable<TestListener> testListeners;
+  private static List<TestListener> testListeners = new LinkedList<>();
+
+  public static void registerListener(TestListener testListener) {
+    testListeners.add(testListener);
+  }
 
   public static Iterable<TestListener> lookupAllTestListeners() {
-    if (testListeners == null) {
-      testListeners = ServiceLoader.load(TestListener.class);
-    }
     return testListeners;
   }
 

junit-launcher/src/main/java/org/junit/gen5/launcher/Launcher.java

@@ -2,6 +2,7 @@
 
 import org.junit.gen5.engine.TestEngine;
 import org.junit.gen5.engine.TestListener;
+import org.junit.gen5.engine.TestListenerRegistry;
 import org.junit.gen5.engine.TestPlanConfiguration;
 
 import java.util.ServiceLoader;
@@ -12,6 +13,10 @@
 public class Launcher {
   private volatile ServiceLoader<TestEngine> testEngines;
 
+  public void registerTestListener(TestListener testListener) {
+    TestListenerRegistry.registerListener(testListener);
+  }
+
   public TestPlan createTestPlanWithConfiguration(TestPlanConfiguration configuration) {
     TestPlan testPlan = new TestPlan();
     for (TestEngine testEngine : lookupAllTestEngines()) {

sample-project/build.gradle

@@ -1,6 +1,7 @@
 dependencies {
 	testCompile(project(':sample-extension'))
 	testCompile(project(':junit-launcher'))
+	testCompile(project(':junit-console'))
 	testCompile(project(':junit5-api'))
 	testRuntime(project(':junit5-engine'))
 }

sample-project/src/test/java/com/example/Console.java

@@ -1,5 +1,7 @@
 package com.example;
 
+import org.junit.gen5.console.ColoredPrintingTestListener;
+import org.junit.gen5.console.TestSummaryReportingTestListener;
 import org.junit.gen5.engine.TestPlanConfiguration;
 import org.junit.gen5.launcher.Launcher;
 import org.junit.gen5.launcher.TestPlan;
@@ -9,6 +11,9 @@ public static void main(String[] args) throws Throwable {
     // TODO Configure launcher?
     Launcher launcher = new Launcher();
 
+    launcher.registerTestListener(new ColoredPrintingTestListener(System.out));
+    launcher.registerTestListener(new TestSummaryReportingTestListener(System.out));
+
     TestPlanConfiguration testPlanConfiguration =
         TestPlanConfiguration.builder()
             .classNames(args)

sample-project/src/test/java/com/example/SampleTestCase.java

@@ -1,21 +1,30 @@
 package com.example;
 
 import org.junit.gen5.api.Test;
+import org.opentestalliance.TestAbortedException;
+import org.opentestalliance.TestSkippedException;
 
 /**
  * Named *TestCase so Gradle will not try to run it.
  */
 class SampleTestCase {
+	@Test
+	void skippingTest() {
+		throw new TestSkippedException("This test will be skipped!");
+	}
+
+	@Test
+	void abortedTest() {
+		throw new TestAbortedException("This test will be aborted!");
+	}
 
 	@Test
 	void failingTest() {
-		throw new AssertionError("this test should fail");
+		throw new AssertionError("This test will always fail!");
 	}
 
 	@Test
 	void succeedingTest() {
 		// no-op
-		System.out.println("success");
 	}
-
-}
+}