--- /dev/null	2020-01-02 04:43:18.583999853 +0000
+++ new/test/jdk/jfr/event/runtime/TestClassUnloadEvent.java	2020-01-30 06:35:13.270382863 +0000
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2013, 2018, 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.jfr.event.runtime;
+
+import java.time.Duration;
+import java.util.List;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedClass;
+import jdk.jfr.consumer.RecordedClassLoader;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+import jdk.test.lib.jfr.TestClassLoader;
+
+/**
+ * @test
+ * @summary The test verifies that a class unload event is created when class is unloaded
+ * @key jfr
+ *
+ * @library /lib /
+ * @build jdk.jfr.event.runtime.TestClasses
+ * @run main/othervm -XX:+PrintGCDetails -XX:+PrintGC  -verbose:class -Xmx16m jdk.jfr.event.runtime.TestClassUnloadEvent
+ */
+
+/**
+ * System.gc() will trigger class unloading if -XX:+ExplicitGCInvokesConcurrent is NOT set.
+ * If this flag is set G1 will never unload classes on System.gc() and
+ * CMS will not guarantee that all semantically dead classes will be unloaded.
+ * As far as the "jfr" key guarantees no VM flags are set from the outside
+ * it should be enough with System.gc().
+ */
+public final class TestClassUnloadEvent {
+    private final static String TEST_CLASS_NAME = "jdk.jfr.event.runtime.TestClasses";
+    private final static String EVENT_PATH = EventNames.ClassUnload;
+
+    // Declare unloadableClassLoader as "public static"
+    // to prevent the compiler to optimize away all unread writes
+    public static TestClassLoader unloadableClassLoader;
+
+    public static void main(String[] args) throws Throwable {
+        Recording recording = new Recording();
+        recording.enable(EVENT_PATH).withThreshold(Duration.ofMillis(0));
+        unloadableClassLoader = new TestClassLoader();
+        recording.start();
+        unloadableClassLoader.loadClass(TEST_CLASS_NAME);
+        unloadableClassLoader = null;
+        System.gc();
+        recording.stop();
+
+        List<RecordedEvent> events = Events.fromRecording(recording);
+        Events.hasEvents(events);
+        boolean isAnyFound = false;
+        for (RecordedEvent event : events) {
+            System.out.println("Event:" + event);
+            RecordedClass unloadedClass = event.getValue("unloadedClass");
+            if (TEST_CLASS_NAME.equals(unloadedClass.getName())) {
+                RecordedClassLoader definingClassLoader = unloadedClass.getClassLoader();
+                Asserts.assertEquals(TestClassLoader.class.getName(), definingClassLoader.getType().getName(),
+                    "Expected " + TestClassLoader.class.getName() + ", got " + definingClassLoader.getType().getName());
+                //Asserts.assertEquals(TestClassLoader.CLASS_LOADER_NAME, definingClassLoader.getName(),
+                  //  "Expected " + TestClassLoader.CLASS_LOADER_NAME + ", got " + definingClassLoader.getName());
+                Asserts.assertFalse(isAnyFound, "Found more than 1 event");
+                isAnyFound = true;
+            }
+        }
+        Asserts.assertTrue(isAnyFound, "No events found");
+    }
+}