--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/lib/testlibrary/jdk/testlibrary/jfr/YoungGarbageCollectionEvent.java	2019-01-29 11:06:18.317918501 +0800
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.testlibrary.jfr;
+
+import static jdk.testlibrary.Asserts.assertGreaterThan;
+import static jdk.testlibrary.Asserts.assertTrue;
+
+import java.time.Duration;
+import java.time.Instant;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.testlibrary.jfr.Events;
+import jdk.testlibrary.jfr.GCHelper;
+
+
+public class YoungGarbageCollectionEvent {
+
+    private static final String EVENT_NAME = GCHelper.event_young_garbage_collection;
+
+    public static void test() throws Exception {
+        Recording recording = new Recording();
+        recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
+        recording.start();
+        triggerGC();
+        recording.stop();
+
+        boolean isAnyFound = false;
+        for (RecordedEvent event : Events.fromRecording(recording)) {
+            if (!EVENT_NAME.equals(event.getEventType().getName())) {
+                continue;
+            }
+            System.out.println("Event: " + event);
+            isAnyFound = true;
+            Events.assertField(event, "gcId").atLeast(0);
+            Events.assertField(event, "tenuringThreshold").atLeast(1);
+
+            Instant startTime = event.getStartTime();
+            Instant endTime = event.getEndTime();
+            Duration duration = event.getDuration();
+            assertGreaterThan(startTime, Instant.EPOCH, "startTime should be at least 0");
+            assertGreaterThan(endTime, Instant.EPOCH, "endTime should be at least 0");
+            // TODO: Maybe we should accept duration of 0, but old test did not.
+            assertGreaterThan(duration, Duration.ZERO, "Duration should be above 0");
+            assertGreaterThan(endTime, startTime, "End time should be after start time");
+        }
+        assertTrue(isAnyFound, "No matching event found");
+    }
+
+    public static byte[] garbage;
+    private static void triggerGC() {
+        for (int i = 0; i < 3072; i++) {
+            garbage = new byte[1024];
+        }
+    }
+}