test/jdk/jdk/jfr/jmx/TestStreamClosed.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
 *
 * 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.jmx;

import java.io.IOException;

import jdk.management.jfr.FlightRecorderMXBean;
import jdk.test.lib.Asserts;
import jdk.test.lib.jfr.SimpleEventHelper;

/*
 * @test
 * @key jfr
 * @summary Call readStream() after closeStream()
 * @library /test/lib /test/jdk
 * @run main/othervm jdk.jfr.jmx.TestStreamClosed
 */
public class TestStreamClosed {
    public static void main(String[] args) throws Exception {
        FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

        long recId = bean.newRecording();
        bean.startRecording(recId);
        SimpleEventHelper.createEvent(1);
        bean.stopRecording(recId);

        long streamId = bean.openStream(recId, null);
        bean.closeStream(streamId);
        try {
            bean.readStream(streamId);
            Asserts.fail("No exception whean reading closed stream");
        } catch (IOException e) {
            // Expected exception.
            String msg = e.getMessage().toLowerCase();
            Asserts.assertTrue(msg.contains("stream") && msg.contains("closed"), "No 'stream closed' in " + msg);
        }
        bean.closeRecording(recId);
    }
}