test/jdk/sun/tools/jstatd/TestJstatdUsage.java

/*
 * Copyright (c) 2013, 2020, 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.
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import jdk.test.lib.JDKToolLauncher;
import jdk.test.lib.Utils;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;

/*
 * @test
 * @bug 4990825
 * @library /test/lib
 * @modules java.management
 * @run main TestJstatdUsage
 */
public class TestJstatdUsage {

    public static void main(String[] args) throws Exception {
        testUsage("-?");
        testUsage("-h");
        testUsage("--help");
    }

    private static void testUsage(String option) throws Exception {
        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstatd");
        launcher.addVMArgs(Utils.getTestJavaOpts());
        launcher.addToolArg(option);
        ProcessBuilder processBuilder = new ProcessBuilder(launcher.getCommand());
        OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);

        output.shouldContain("usage: jstatd [-nr] [-p port] [-r rmiport] [-n rminame]");
        output.shouldHaveExitValue(0);
    }

}