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25 
26 package jdk.jfr.api.event;
27 
28 import jdk.jfr.EventType;
29 import jdk.jfr.Recording;
30 import jdk.test.lib.Asserts;
31 import jdk.test.lib.jfr.SimpleEvent;
32 
33 /**
34  * @test
35  * @summary Test Event.isEnabled()
36  * @key jfr
37  * @requires vm.hasJFR
38  * @library /test/lib
39  * @run main/othervm jdk.jfr.api.event.TestIsEnabled
40  */
41 
42 public class TestIsEnabled {
43 
main(String[] args)44     public static void main(String[] args) throws Exception {
45         assertDisabled("Event enabled with no recording");
46 
47         Recording r = new Recording();
48         assertDisabled("Event enabled at new Recording()");
49 
50         r.enable(SimpleEvent.class);
51         assertDisabled("Event enabled before r.start()");
52 
53         r.start();
54 
55         // enable/disable by class
56         assertEnabled("Event not enabled after r.start()");
57         r.disable(SimpleEvent.class);
58         assertDisabled("Event enabled after r.disable()");
59         r.enable(SimpleEvent.class);
60         assertEnabled("Event disabled afer r.enable()");
61 
62         // enable/disable by event setting name
63         String eventSettingName = String.valueOf(EventType.getEventType(SimpleEvent.class).getId());
64         System.out.println("eventSettingName=" + eventSettingName);
65 
66         r.disable(eventSettingName);
67         assertDisabled("Event enabled after r.disable(name)");
68         r.enable(eventSettingName);
69         assertEnabled("Event disabled after r.enable(name)");
70 
71         r.stop();
72         assertDisabled("Event enabled after r.stop()");
73 
74         r.close();
75         assertDisabled("Event enabled after r.close()");
76     }
77 
assertEnabled(String msg)78     private static void assertEnabled(String msg) {
79         SimpleEvent event = new SimpleEvent();
80         Asserts.assertTrue(event.isEnabled(), msg);
81     }
82 
assertDisabled(String msg)83     private static void assertDisabled(String msg) {
84         SimpleEvent event = new SimpleEvent();
85         Asserts.assertFalse(event.isEnabled(), msg);
86     }
87 
88 }
89