/*

 * Copyright (c) 2005, 2017, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import java.io.IOException;

import jdk.test.lib.JDKToolLauncher;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.apps.LingeredApp;

/*

 * @test

 * @summary Unit test for jinfo utility

 *

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.management

 *          jdk.jcmd

 *

 * @run main JInfoTest

 */

public class JInfoTest {

    private static ProcessBuilder processBuilder = new ProcessBuilder();

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

        classNameMatch();

        setMultipleFlags();

        setFlag();

    }

    private static void setFlag() throws Exception {

        System.out.println("#### setFlag ####");

        LingeredApp app1 = new JInfoTestLingeredApp();

        LingeredApp app2 = new JInfoTestLingeredApp();

        try {

            ArrayList<String> params = new ArrayList<String>();

            LingeredApp.startApp(params, app1);

            LingeredApp.startApp(params, app2);

            OutputAnalyzer output = jinfo("-flag", "MinHeapFreeRatio=1", "JInfoTestLingeredApp");

            output.shouldHaveExitValue(0);

            output = jinfo("-flag", "MinHeapFreeRatio", "JInfoTestLingeredApp");

            output.shouldHaveExitValue(0);

            documentMatch(output.getStdout(), ".*MinHeapFreeRatio=1.*MinHeapFreeRatio=1.*");

        } finally {

            JInfoTestLingeredApp.stopApp(app1);

            JInfoTestLingeredApp.stopApp(app2);

        }

    }

    private static void setMultipleFlags() throws Exception {

        System.out.println("#### setMultipleFlags ####");

        OutputAnalyzer output = jinfo("-sysprops", "-flag", "MinHeapFreeRatio=1", "-flags", "JInfoTestLingeredApp");

        output.shouldHaveExitValue(1);

    }

    private static void classNameMatch() throws Exception {

        System.out.println("#### classNameMatch ####");

        LingeredApp app1 = new JInfoTestLingeredApp();

        LingeredApp app2 = new JInfoTestLingeredApp();

        try {

            ArrayList<String> params = new ArrayList<String>();

            LingeredApp.startApp(params, app1);

            LingeredApp.startApp(params, app2);

            OutputAnalyzer output = jinfo("JInfoTestLingeredApp");

            output.shouldHaveExitValue(0);

            // "Runtime Environment" written once per proc

            documentMatch(output.getStdout(), ".*Runtime Environment.*Runtime Environment.*");

        } finally {

            JInfoTestLingeredApp.stopApp(app1);

            JInfoTestLingeredApp.stopApp(app2);

        }

    }

    private static void documentMatch(String data, String pattern){

        Matcher matcher = Pattern.compile(pattern, Pattern.DOTALL).matcher(data);

        if (!matcher.find()) {

            throw new RuntimeException("'" + pattern + "' missing from stdout \n");

        }

    }

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

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

        if (toolArgs != null) {

            for (String toolArg : toolArgs) {

                launcher.addToolArg(toolArg);

            }

        }

        processBuilder.command(launcher.getCommand());

        OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);

        return output;

    }

}

// Sometime there is LingeredApp's from other test still around

class JInfoTestLingeredApp extends LingeredApp {

}