Use TestExecutionListener to log test start and end in org.eclipse.ui.tests

Add a JUnit Jupiter TestExecutionListener to org.eclipse.ui.tests,
which logs test start and end events via UIPlugin.
The listener is defined in org.eclipse.ui.tests.harness,
so that it can be reused by other test bundles.

Fixes: #4032

Author: trancexpress

tests/org.eclipse.ui.tests.harness/META-INF/MANIFEST.MF

@@ -10,7 +10,9 @@ Require-Bundle: org.eclipse.ui;bundle-version="3.208.0",
  org.eclipse.core.resources
 Bundle-ActivationPolicy: lazy
 Import-Package: org.junit.jupiter.api;version="[5.0.0,6.0.0)",
- org.junit.jupiter.api.extension;version="[5.0.0,6.0.0)"
+ org.junit.jupiter.api.extension;version="[5.0.0,6.0.0)",
+ org.junit.platform.engine;version="[1.14.0,2.0.0)",
+ org.junit.platform.launcher;version="[1.14.0,2.0.0)"
 Export-Package: org.eclipse.ui.tests.harness,
  org.eclipse.ui.tests.harness.tests,
  org.eclipse.ui.tests.harness.util,

tests/org.eclipse.ui.tests.harness/src/org/eclipse/ui/tests/harness/util/LogTestListener.java

@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Simeon Andreev and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Simeon Andreev - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.ui.tests.harness.util;
+
+import org.eclipse.core.runtime.Status;
+import org.eclipse.ui.internal.UIPlugin;
+import org.junit.platform.engine.TestExecutionResult;
+import org.junit.platform.launcher.TestExecutionListener;
+import org.junit.platform.launcher.TestIdentifier;
+
+/**
+ * Logs tests start and end.
+ */
+public class LogTestListener implements TestExecutionListener {
+
+	@Override
+	public void executionStarted(TestIdentifier id) {
+		logInfo(id.getDisplayName() + " STARTING");
+	}
+
+	@Override
+	public void executionFinished(TestIdentifier id, TestExecutionResult result) {
+		logInfo(id.getDisplayName() + " DONE: " + result.getStatus());
+	}
+
+	private static void logInfo(String message) {
+		UIPlugin.getDefault().getLog().log(Status.info(message));
+	}
+}

tests/org.eclipse.ui.tests/META-INF/services/org.junit.platform.launcher.TestExecutionListener

@@ -0,0 +1 @@
+org.eclipse.ui.tests.harness.util.LogTestListener