Introduce a "printSummary" attribute on the junitlauncher task to print the test execution summary

manual/Tasks/junitlauncher.html

@@ -141,6 +141,14 @@
         </td>
         <td>No</td>
     </tr>
+    <tr>
+        <td>printSummary</td>
+        <td>If the value is set to <code>true</code> then this task, upon completion of the test execution,
+            prints the summary of the execution to <code>System.out</code>. The summary itself is generated
+            by the JUnit 5 platform and not by this task.
+        </td>
+        <td>No; defaults to <code>false</code></td>
+    </tr>
 </table>
 
 <h3 id="nested">Nested Elements</h3>

src/main/org/apache/tools/ant/taskdefs/optional/junitlauncher/JUnitLauncherTask.java

@@ -21,6 +21,7 @@ import java.io.OutputStream;
 import java.io.PipedInputStream;
 import java.io.PipedOutputStream;
 import java.io.PrintStream;
+import java.io.PrintWriter;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -57,6 +58,7 @@ public class JUnitLauncherTask extends Task {
     private Path classPath;
     private boolean haltOnFailure;
     private String failureProperty;
+    private boolean printSummary;
     private final List<TestDefinition> tests = new ArrayList<>();
     private final List<ListenerDefinition> listeners = new ArrayList<>();
 
@@ -172,6 +174,10 @@ public class JUnitLauncherTask extends Task {
         this.failureProperty = failureProperty;
     }
 
+    public void setPrintSummary(final boolean printSummary) {
+        this.printSummary = printSummary;
+    }
+
     private void preConfigure(final TestDefinition test) {
         if (test.getHaltOnFailure() == null) {
             test.setHaltOnFailure(this.haltOnFailure);
@@ -267,6 +273,10 @@ public class JUnitLauncherTask extends Task {
     }
 
     private void handleTestExecutionCompletion(final TestDefinition test, final TestExecutionSummary summary) {
+        if (printSummary) {
+            // print the summary to System.out
+            summary.printTo(new PrintWriter(System.out, true));
+        }
         final boolean hasTestFailures = summary.getTestsFailedCount() != 0;
         try {
             if (hasTestFailures && test.getFailureProperty() != null) {