1 /*

     2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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

    21  * questions.

    22  *

    23  */

    24 

    25 /*

    26  * @test

    27  * @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

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

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

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

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

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

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

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

    35  *          jdk.jartool/sun.tools.jar

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

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

    38  * @run driver EmptyClassInBootClassPath

    39  */

    40 

    41 import java.io.File;

    42 import java.lang.*;

    43 import java.lang.reflect.*;

    44 import java.util.List;

    45 import java.util.ArrayList;

    46 import jdk.test.lib.process.OutputAnalyzer;

    47 

    48 public class EmptyClassInBootClassPath {

    49     static final String EXPECTED_EXCEPTION =

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

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

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

    53         JarBuilder.build("emptyClass", className);

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

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

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

    57         OutputAnalyzer dumpOutput = TestCommon.dump(

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

    59         TestCommon.checkDump(dumpOutput);

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

    61 

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

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

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

    65         argsList.add(classPath);

    66         argsList.add(bootclasspath);

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

    68         argsList.add("EmptyClassHelper");

    69 

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

    71         argsList.add("useAppLoader");

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

    73         opts = argsList.toArray(opts);

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

    75 

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

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

    78         argsList.add("useBootLoader");

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

    80         opts = argsList.toArray(opts);

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

    82 

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

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

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

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

    87         argsList.add("useAppLoader");

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

    89         opts = argsList.toArray(opts);

    90         TestCommon.run(opts)

    91             .assertSilentlyDisabledCDS(0, EXPECTED_EXCEPTION);

    92 

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

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

    95         argsList.add("useBootLoader");

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

    97         opts = argsList.toArray(opts);

    98         TestCommon.run(opts)

    99             .assertSilentlyDisabledCDS(0, EXPECTED_EXCEPTION);

   100     }

   101 }