test/jdk/jdk/jfr/api/metadata/settingdescriptor/TestGetAnnotation.java

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package jdk.jfr.api.metadata.settingdescriptor;

import jdk.jfr.Description;
import jdk.jfr.EventType;
import jdk.jfr.Label;
import jdk.jfr.SettingDescriptor;
import jdk.jfr.Timespan;
import jdk.jfr.Timestamp;
import jdk.test.lib.Asserts;
import jdk.test.lib.jfr.Events;

/*
 * @test
 * @summary Test SettingDescriptor.getAnnotation();
 * @key jfr
 * @library /test/lib /test/jdk
 * @run main/othervm jdk.jfr.api.metadata.settingdescriptor.TestGetAnnotation
 */
public class TestGetAnnotation {

    public static void main(String[] args) throws Exception {
        EventType type = EventType.getEventType(CustomEvent.class);

        SettingDescriptor annotatedType = Events.getSetting(type, "annotatedType");
        Label al = annotatedType.getAnnotation(Label.class);
        Asserts.assertNull(al); // we should not inherit annotation from type

        Description ad = annotatedType.getAnnotation(Description.class);
        Asserts.assertNull(ad); // we should not inherit annotation from type

        Timestamp at = annotatedType.getAnnotation(Timestamp.class);
        Asserts.assertNull(at); // we should not inherit annotation from type

        SettingDescriptor newName = Events.getSetting(type, "newName");
        Label nl = newName.getAnnotation(Label.class);
        Asserts.assertEquals(nl.value(), "Annotated Method");

        Description nd = newName.getAnnotation(Description.class);
        Asserts.assertEquals(nd.value(), "Description of an annotated method");

        Timespan nt = newName.getAnnotation(Timespan.class);
        Asserts.assertEquals(nt.value(), Timespan.NANOSECONDS);
    }

}