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 * version 2 for more details (a copy is included in the LICENSE file that

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/*

 * @test

 * @summary Test a few scenarios if an empty class, which has the same name as the one in the jimage, is specified in the -Xbootclasspath/a

 *     1) boot loader will always load the class from the bootclasspath

 *     2) app loader will load the class from the jimage by default;

 *        app loader will load the class from the bootclasspath if the

 *        "--limit-modules java.base" option is specified

 * @requires vm.cds & !vm.graal.enabled

 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds

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

 *          jdk.jartool/sun.tools.jar

 * @compile ../../test-classes/EmptyClassHelper.java

 * @compile ../../test-classes/com/sun/tools/javac/Main.jasm

 * @run driver EmptyClassInBootClassPath

 */

import java.io.File;

import java.lang.*;

import java.lang.reflect.*;

import java.util.List;

import java.util.ArrayList;

import jdk.test.lib.process.OutputAnalyzer;

public class EmptyClassInBootClassPath {

    static final String EXPECTED_EXCEPTION =

        "java.lang.NoSuchMethodException: com.sun.tools.javac.Main.main([Ljava.lang.String;)";

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

        String[] className = {"com/sun/tools/javac/Main"};

        JarBuilder.build("emptyClass", className);

        String appJar = TestCommon.getTestJar("emptyClass.jar");

        JarBuilder.build("EmptyClassHelper", "EmptyClassHelper");

        String helperJar = TestCommon.getTestJar("EmptyClassHelper.jar");

        OutputAnalyzer dumpOutput = TestCommon.dump(

            appJar, className, "-Xbootclasspath/a:" + appJar);

        TestCommon.checkDump(dumpOutput);

        dumpOutput.shouldNotContain("Preload Warning: skipping class from -Xbootclasspath/a " + className[0]);

        String bootclasspath = "-Xbootclasspath/a:" + appJar;

        String classPath = "-Djava.class.path=" + appJar + File.pathSeparator + helperJar;

        List<String> argsList = new ArrayList<String>();

        argsList.add(classPath);

        argsList.add(bootclasspath);

        argsList.add("--add-exports=java.base/jdk.internal.access=ALL-UNNAMED");

        argsList.add("EmptyClassHelper");

        // case 1: load class in bootclasspath using app loader

        argsList.add("useAppLoader");

        String[] opts = new String[argsList.size()];

        opts = argsList.toArray(opts);

        TestCommon.run(opts).assertNormalExit("appLoader found method main");

        // case 2: load class in bootclasspath using boot loader

        argsList.remove(argsList.size() - 1);

        argsList.add("useBootLoader");

        opts = new String[argsList.size()];

        opts = argsList.toArray(opts);

        TestCommon.run(opts).assertNormalExit(EXPECTED_EXCEPTION);

        // case 3: load class in bootclasspath using app loader with '--limit-modules java.base'

        argsList.add(0, "--limit-modules");

        argsList.add(1, "java.base");

        argsList.remove(argsList.size() - 1);

        argsList.add("useAppLoader");

        opts = new String[argsList.size()];

        opts = argsList.toArray(opts);

        TestCommon.run(opts)

            .assertSilentlyDisabledCDS(0, EXPECTED_EXCEPTION);

        // case 4: load class in bootclasspath using boot loader with '--limit-modules java.base'

        argsList.remove(argsList.size() - 1);

        argsList.add("useBootLoader");

        opts = new String[argsList.size()];

        opts = argsList.toArray(opts);

        TestCommon.run(opts)

            .assertSilentlyDisabledCDS(0, EXPECTED_EXCEPTION);

    }

}