/*

 * Copyright (c) 2005, 2018, 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.io.File;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

import com.sun.tools.attach.VirtualMachine;

import com.sun.tools.attach.spi.AttachProvider;

/*

 * @test

 * @bug 6173612 6273707 6277253 6335921 6348630 6342019 6381757

 * @summary Basic unit tests for the VM attach mechanism. The test will attach

 * and detach to/from the running Application.

 *

 * @library /test/lib

 * @modules jdk.attach

 *          jdk.jartool/sun.tools.jar

 *

 * @run build SimpleProvider

 * @run main ProviderTest

 */

public class ProviderTest {

    /*

     * The actual tests are in the nested class TestMain below.

     * The responsibility of this class is to:

     * 1. Build the needed jar.

     * 2. Run tests in ProviderTest.TestMain.

     */

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

        try {

            buildJar();

            runTests();

        } catch (Throwable t) {

            System.out.println("TestProvider got unexpected exception: " + t);

            t.printStackTrace();

            throw t;

        }

    }

    /**

     * Runs the actual tests in the nested class TestMain.

     * We need to run the tests in a separate process,

     * because we need to add to the classpath.

     */

    private static void runTests() throws Throwable {

        final String sep = File.separator;

        String testClassPath = System.getProperty("test.class.path", "");

        String testClasses = System.getProperty("test.classes", "") + sep;

        String jdkLib = System.getProperty("test.jdk", ".") + sep + "lib" + sep;

        // Need to add SimpleProvider.jar to classpath.

        String classpath =

                testClassPath + File.pathSeparator +

                testClasses + "SimpleProvider.jar";

        String[] args = {

                "-classpath",

                classpath,

                "ProviderTest$TestMain" };

        OutputAnalyzer output = ProcessTools.executeTestJvm(args);

        output.shouldHaveExitValue(0);

    }

    /**

     * Will build the SimpleProvider.jar.

     */

    private static void buildJar() throws Throwable {

        final String sep = File.separator;

        String testClasses = System.getProperty("test.classes", "?") + sep;

        String testSrc = System.getProperty("test.src", "?") + sep;

        String serviceDir = "META-INF" + sep + "services" + sep;

        RunnerUtil.createJar(

            "-cf", testClasses + "SimpleProvider.jar",

            "-C", testClasses, "SimpleProvider.class",

            "-C", testClasses, "SimpleVirtualMachine.class",

            "-C", testSrc,

            serviceDir + "com.sun.tools.attach.spi.AttachProvider");

    }

    /**

     * This is the actual test code that attaches to the running Application.

     * This class is run in a separate process.

     */

    public static class TestMain {

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

            // deal with internal builds where classes are loaded from the

            // 'classes' directory rather than rt.jar

            ClassLoader cl = AttachProvider.class.getClassLoader();

            if (cl != ClassLoader.getSystemClassLoader()) {

                System.out.println("Attach API not loaded by system class loader - test skipped");

                return;

            }

            VirtualMachine.attach("simple:1234").detach();

        }

    }

}