Console runner has new option --hide-details

junit-console/src/main/java/org/junit/gen5/console/ConsoleRunner.java

@@ -56,6 +56,9 @@ public class ConsoleRunner {
 	@Option(name = {"-a", "--all"}, description = "Run all tests")
 	private boolean runAllTests;
 
+	@Option(name = {"-D", "--hide-details"}, description = "Hide details while tests are being executed")
+	private boolean hideDetails;
+
 	@Arguments(description = "Test classes, methods or packages to execute (ignore if --all|-a has been chosen)")
 	private List<String> arguments;
 
@@ -109,12 +112,10 @@ private void run() {
 
 	private void registerListeners(Launcher launcher, TestExecutionSummary summary) {
 		SummaryCreatingTestListener testSummaryListener = new SummaryCreatingTestListener(summary);
-		launcher.registerTestPlanExecutionListeners(
-			// @formatter:off
-			new ColoredPrintingTestListener(System.out, disableAnsiColors),
-			testSummaryListener
-			// @formatter:on
-		);
+		launcher.registerTestPlanExecutionListeners(testSummaryListener);
+		if (!hideDetails) {
+			launcher.registerTestPlanExecutionListeners(new ColoredPrintingTestListener(System.out, disableAnsiColors));
+		}
 	}
 
 	private TestPlanSpecification createTestPlanSpecification() {
@@ -130,9 +131,14 @@ private TestPlanSpecification createTestPlanSpecification() {
 	}
 
 	private void printSummaryToStandardOut(TestExecutionSummary summary) {
-		PrintWriter soutWriter = new PrintWriter(System.out);
-		summary.printOn(soutWriter);
-		soutWriter.close();
+		PrintWriter stdout = new PrintWriter(System.out);
+
+		if (hideDetails) { //Otherwise the failures have already been printed
+			summary.printFailuresOn(stdout);
+		}
+
+		summary.printOn(stdout);
+		stdout.close();
 	}
 
 	private List<TestPlanSpecificationElement> testPlanSpecificationElementsFromArguments() {

junit-launcher/src/main/java/org/junit/gen5/launcher/listeners/TestExecutionSummary.java

@@ -13,16 +13,15 @@
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.StringJoiner;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
+import java.util.Optional;
 import java.util.concurrent.atomic.AtomicLong;
+import java.util.stream.Collectors;
 
 import lombok.Value;
 
+import org.junit.gen5.engine.EngineDescriptor;
 import org.junit.gen5.engine.TestDescriptor;
+import org.junit.gen5.launcher.TestPlan;
 
 // TODO Give it a REAL interface and make it threadsafe
 public class TestExecutionSummary {
@@ -61,13 +60,44 @@ public void printOn(PrintWriter writer) {
 			this.testsSkipped.get(), this.testsAborted.get(), this.testsSucceeded.get(), this.testsFailed.get()));
 		// @formatter:on
 
-		//		if (countFailedTests() > 0) {
-		//			writer.println("Test failures: ");
-		//		}
+		writer.flush();
+	}
+
+	public void printFailuresOn(PrintWriter writer) {
+
+		if (countFailedTests() > 0) {
+			writer.println();
+			writer.println(String.format("Test failures (%d):", testsFailed.get()));
+			failures.stream().forEach(failure -> {
+				//TODO Add source description to text
+				writer.println(String.format("  %s", describeTest(failure.getDescriptor())));
+				writer.println(String.format("    => Exception: %s", failure.getException().getLocalizedMessage()));
+			});
+		}
 
 		writer.flush();
 	}
 
+	private String describeTest(TestDescriptor descriptor) {
+		List<String> descriptionParts = new ArrayList<>();
+		collectTestDescription(Optional.of(descriptor), descriptionParts);
+		return descriptionParts.stream().collect(Collectors.joining(":"));
+	}
+
+	private void collectTestDescription(Optional<TestDescriptor> optionalDescriptor, List<String> descriptionParts) {
+		optionalDescriptor.ifPresent(descriptor -> {
+			if (descriptor instanceof TestPlan) {
+			}
+			else if (descriptor instanceof EngineDescriptor) {
+				descriptionParts.add(0, descriptor.getUniqueId());
+			}
+			else {
+				descriptionParts.add(0, descriptor.getDisplayName());
+			}
+			collectTestDescription(descriptor.getParent(), descriptionParts);
+		});
+	}
+
 	public long countFailedTests() {
 		return testsFailed.get();
 	}

sample-project/build.gradle

@@ -13,7 +13,7 @@ task runSampleTestCases(type: JavaExec) {
 	classpath = sourceSets.test.runtimeClasspath
 	classpath += project(':junit-console').sourceSets.main.runtimeClasspath
 	main = 'org.junit.gen5.console.ConsoleRunner'
-	args '--all' // 'com.example'
+	args '--all', '--hide-details' // 'com.example'
 }
 
 test {