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  *
  42  * @library /lib /
  43  * @run main/othervm jdk.jfr.api.consumer.TestSingleRecordedEvent
  44  */
  45 public class TestSingleRecordedEvent {
  46 
  47     @Description("MyDescription")
  48     private static class MyEvent extends Event {
  49     }
  50 
  51     public static void main(String[] args) throws Throwable {
  52         Recording r = new Recording();
  53         r.start();
  54         // Commit a single event to the recording
  55         MyEvent event = new MyEvent();
  56         event.commit();
  57         r.stop();
  58         List<RecordedEvent> events = Events.fromRecording(r);
  59         Events.hasEvents(events);
  60 
  61         // Should be 1 event only
  62         Asserts.assertEquals(events.size(), 1);
  63 
  64         RecordedEvent recordedEvent = events.get(0);
  65 
  66         // Event description should be the same
  67         Asserts.assertEquals(recordedEvent.getEventType().getDescription(), "MyDescription");
  68     }
  69 }