/*

 * Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

import java.io.File;

import java.util.Arrays;

import static jdk.testlibrary.Asserts.*;

import jdk.testlibrary.JDKToolLauncher;

import jdk.testlibrary.OutputAnalyzer;

import jdk.testlibrary.ProcessTools;

/*

 * @test

 * @bug 6321286

 * @summary Unit test for jmap utility

 * @library /lib/testlibrary

 * @run main BasicJMapTest

 */

public class BasicJMapTest {

    private static ProcessBuilder processBuilder = new ProcessBuilder();

    public static void main(String[] args) throws Exception {

        testHisto();

        testHistoLive();

        testDump();

        testDumpLive();

    }

    private static void testHisto() throws Exception {

        OutputAnalyzer output = jmap("-histo");

        output.shouldHaveExitValue(0);

    }

    private static void testHistoLive() throws Exception {

        OutputAnalyzer output = jmap("-histo:live");

        output.shouldHaveExitValue(0);

    }

    private static void testDump() throws Exception {

        File dump = new File("java_pid$" + ProcessTools.getProcessId() + ".hprof");

        OutputAnalyzer output = jmap("-dump:format=b,file=" + dump.getName());

        output.shouldHaveExitValue(0);

        output.shouldContain("Heap dump file created");

        verifyDumpFile(dump);

    }

    private static void testDumpLive() throws Exception {

        File dump = new File("java_pid$" + ProcessTools.getProcessId() + ".hprof");

        OutputAnalyzer output = jmap("-dump:live,format=b,file=" + dump.getName());

        output.shouldHaveExitValue(0);

        output.shouldContain("Heap dump file created");

        verifyDumpFile(dump);

    }

    private static void verifyDumpFile(File dump) {

        assertTrue(dump.exists() && dump.isFile(), "Could not create dump file");

        dump.delete();

    }

    private static OutputAnalyzer jmap(String... toolArgs) throws Exception {

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jmap");

        launcher.addVMArg("-XX:+UsePerfData");

        if (toolArgs != null) {

            for (String toolArg : toolArgs) {

                launcher.addToolArg(toolArg);

            }

        }

        launcher.addToolArg(Integer.toString(ProcessTools.getProcessId()));

        processBuilder.command(launcher.getCommand());

        System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));

        OutputAnalyzer output = new OutputAnalyzer(processBuilder.start());

        System.out.println(output.getOutput());

        return output;

    }

}