test/jdk/jdk/jfr/api/metadata/valuedescriptor/TestIsArray.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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package jdk.jfr.api.metadata.valuedescriptor;

import jdk.jfr.Event;
import jdk.jfr.EventType;
import jdk.jfr.ValueDescriptor;
import jdk.test.lib.Asserts;

/*
 * @test
 * @summary Test ValueDescriptor.isArray().
 * @key jfr
 * @library /test/lib
 * @run main/othervm jdk.jfr.api.metadata.valuedescriptor.TestIsArray
 */
public class TestIsArray {

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

        ValueDescriptor d = type.getField("myIds");

        Asserts.assertNull(d, "ValueDescriptor for int[] was not null");

        type = EventType.getEventType(EventWithoutArray.class);
        d = type.getField("myId");
        Asserts.assertFalse(d.isArray(), "isArray() was true for int");
    }

    private static class EventWithArray extends Event {
        @SuppressWarnings("unused")
        public int[] myIds;
    }

    private static class EventWithoutArray extends Event {
        @SuppressWarnings("unused")
        public int myId;
    }
}