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 * 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

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 *

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

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/*

 *  @test

 *  @summary If -Djava.system.class.loader=xxx is specified in command-line, disable UseAppCDS

 *  AppCDS does not support uncompressed oops

 *  @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)

 *  @library /test/lib

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

 *      jdk.jartool/sun.tools.jar

 *  @compile test-classes/TestClassLoader.java

 *  @compile test-classes/ReportMyLoader.java

 *  @compile test-classes/TrySwitchMyLoader.java

 *  @run main SpecifySysLoaderProp

 */

import java.io.*;

import jdk.test.lib.process.OutputAnalyzer;

public class SpecifySysLoaderProp {

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

    JarBuilder.build("sysloader", "TestClassLoader", "ReportMyLoader", "TrySwitchMyLoader");

    String jarFileName = "sysloader.jar";

    String appJar = TestCommon.getTestJar(jarFileName);

    TestCommon.testDump(appJar, TestCommon.list("ReportMyLoader"));

    String warning = "VM warning: UseAppCDS is disabled because the java.system.class.loader property is specified";

    // (0) Baseline. Do not specify -Djava.system.class.loader

    //     The test class should be loaded from archive

    OutputAnalyzer output = TestCommon.execCommon(

        "-verbose:class",

        "-cp", appJar,

        "ReportMyLoader");

    TestCommon.checkExec(output,

                         "[class,load] ReportMyLoader source: shared objects file",

                         "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@");

    // (1) Try to execute the archive with -Djava.system.class.loader=no.such.Klass,

    //     it should fail

    output = TestCommon.execCommon(

        "-cp", appJar,

        "-Djava.system.class.loader=no.such.Klass",

        "ReportMyLoader");

    try {

        output.shouldContain(warning);

        output.shouldContain("ClassNotFoundException: no.such.Klass");

    } catch (Exception e) {

        TestCommon.checkCommonExecExceptions(output, e);

    }

    // (2) Try to execute the archive with -Djava.system.class.loader=TestClassLoader,

    //     it should run, but AppCDS should be disabled

    output = TestCommon.execCommon(

        "-verbose:class",

        "-cp", appJar,

        "-Djava.system.class.loader=TestClassLoader",

        "ReportMyLoader");

    TestCommon.checkExec(output,

                         "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@", //<-this is still printed because TestClassLoader simply delegates to Launcher$AppLoader, but ...

                         "TestClassLoader.called = true", //<-but this proves that TestClassLoader was indeed called.

                         "TestClassLoader: loadClass(\"ReportMyLoader\","); //<- this also proves that TestClassLoader was indeed called.

    try {

        output.shouldMatch(".class,load. TestClassLoader source: file:");

        output.shouldMatch(".class,load. ReportMyLoader source: file:.*" + jarFileName);

    } catch (Exception e) {

        TestCommon.checkCommonExecExceptions(output, e);

    }

    // (3) Try to change the java.system.class.loader programmatically after

    //     the app's main method is executed. This should have no effect in terms of

    //     changing or switching the actual system class loader that's already in use.

    output = TestCommon.execCommon(

        "-verbose:class",

        "-cp", appJar,

        "TrySwitchMyLoader");

    TestCommon.checkExec(output,

                         "[class,load] ReportMyLoader source: shared objects file",

                         "TrySwitchMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@",

                         "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@",

                         "TestClassLoader.called = false");

  }

}