1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.api.consumer; 27 28 import java.util.List; 29 30 import jdk.jfr.Description; 31 import jdk.jfr.Event; 32 import jdk.jfr.Recording; 33 import jdk.jfr.consumer.RecordedEvent; 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.jfr.Events; 36 37 /* 38 * @test 39 * @summary Verifies that a single JFR event is recorded as expected 40 * @key jfr 41 * @library /test/lib 42 * @run main/othervm jdk.jfr.api.consumer.TestSingleRecordedEvent 43 */ 44 public class TestSingleRecordedEvent { 45 46 @Description("MyDescription") 47 private static class MyEvent extends Event { 48 } 49 50 public static void main(String[] args) throws Throwable { 51 Recording r = new Recording(); 52 r.start(); 53 // Commit a single event to the recording 54 MyEvent event = new MyEvent(); 55 event.commit(); 56 r.stop(); 57 List<RecordedEvent> events = Events.fromRecording(r); 58 Events.hasEvents(events); 59 60 // Should be 1 event only 61 Asserts.assertEquals(events.size(), 1); 62 63 RecordedEvent recordedEvent = events.get(0); 64 65 // Event description should be the same 66 Asserts.assertEquals(recordedEvent.getEventType().getDescription(), "MyDescription"); 67 } 68 }