test/jdk/jdk/jfr/api/consumer/TestRecordingFileReadEventEof.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * 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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 * 2 along with this work; if not, write to the Free Software Foundation,
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package jdk.jfr.api.consumer;

import java.io.EOFException;

import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordingFile;
import jdk.test.lib.Asserts;
import jdk.test.lib.jfr.Events;
import jdk.test.lib.jfr.SimpleEvent;

/*
 * @test
 * @summary Verifies that RecordingFile.readEvent() throws EOF when past the last record
 * @key jfr
 * @library /test/lib
 * @run main/othervm jdk.jfr.api.consumer.TestRecordingFileReadEventEof
 */
public class TestRecordingFileReadEventEof {

    public static void main(String[] args) throws Throwable {
        Recording r = new Recording();
        r.start();
        SimpleEvent t = new SimpleEvent();
        t.commit();
        r.stop();
        RecordingFile file = Events.copyTo(r);
        r.close();
        file.readEvent();
        try {
            file.readEvent();
            Asserts.fail("Expected EOFException not thrown");
        } catch (EOFException x) {
            // OK, as expected
        }
    }
}