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.flightrecorder;
  27 
  28 import static jdk.test.lib.Asserts.assertEquals;
  29 import static jdk.test.lib.Asserts.assertFalse;
  30 import static jdk.test.lib.Asserts.assertTrue;
  31 
  32 import java.util.List;
  33 
  34 import jdk.jfr.FlightRecorder;
  35 import jdk.jfr.Recording;
  36 
  37 /**
  38  * @test
  39  * @key jfr
  40  *
  41  * @library /lib /
  42  * @run main/othervm jdk.jfr.api.flightrecorder.TestGetRecordings
  43  */
  44 public class TestGetRecordings {
  45 
  46     public static void main(String[] args) throws Throwable {
  47         FlightRecorder recorder = FlightRecorder.getFlightRecorder();
  48 
  49         // Recording should be empty at start.
  50         List<Recording> recordings = recorder.getRecordings();
  51         assertTrue(recordings.isEmpty(), "recordings should be empty at start");
  52 
  53         // Create first recording
  54         Recording r1 = new Recording();
  55         recordings = recorder.getRecordings();
  56         assertEquals(recordings.size(), 1, "Expected 1 recording");
  57         assertTrue(recordings.contains(r1), "r1 should be in list");
  58 
  59         // Create second recording
  60         Recording r2 = new Recording();
  61         recordings = recorder.getRecordings();
  62         assertEquals(recordings.size(), 2, "Expected 2 recordings");
  63         assertTrue(recordings.contains(r2), "r2 should be in list");
  64         assertTrue(recordings.contains(r1), "r1 should still be in list");
  65 
  66         // Close first recording
  67         r1.close();
  68         recordings = recorder.getRecordings();
  69         assertEquals(recordings.size(), 1, "Expected 1 remaining recording");
  70         assertTrue(recordings.contains(r2), "r2 should still be in list");
  71         assertFalse(recordings.contains(r1), "r1 should be removed");
  72 
  73         // Close second recording
  74         r2.close();
  75         recordings = recorder.getRecordings();
  76         assertTrue(recordings.isEmpty(), "recordings should be empty after close");
  77 
  78         // Create recording with new Recording()
  79         Recording r3 = new Recording();
  80         recordings = recorder.getRecordings();
  81         assertTrue(recordings.contains(r3 ), "new Recording() should be in list");
  82         r3.close();
  83     }
  84 
  85 }