1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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  *
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  20  * or visit www.oracle.com if you need additional information or have any
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  23  */
  24 
  25 /*
  26  * @test
  27  * @summary If -Djava.system.class.loader=xxx is specified in command-line, disable archived non-system classes
  28  * @requires vm.cds
  29  * @library /test/lib
  30  * @compile test-classes/TestClassLoader.java
  31  * @compile test-classes/ReportMyLoader.java
  32  * @compile test-classes/TrySwitchMyLoader.java
  33  * @run driver SpecifySysLoaderProp
  34  */
  35 
  36 import java.io.*;
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 public class SpecifySysLoaderProp {
  40 
  41   public static void main(String[] args) throws Exception {
  42     JarBuilder.build("sysloader", "TestClassLoader", "ReportMyLoader", "TrySwitchMyLoader");
  43 
  44     String jarFileName = "sysloader.jar";
  45     String appJar = TestCommon.getTestJar(jarFileName);
  46     TestCommon.testDump(appJar, TestCommon.list("ReportMyLoader"));
  47     String warning = "VM warning: Archived non-system classes are disabled because the java.system.class.loader property is specified";
  48 
  49 
  50     // (0) Baseline. Do not specify -Djava.system.class.loader
  51     //     The test class should be loaded from archive
  52     TestCommon.run(
  53         "-verbose:class",
  54         "-cp", appJar,
  55         "ReportMyLoader")
  56       .assertNormalExit("[class,load] ReportMyLoader source: shared objects file",
  57                         "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@");
  58 
  59     // (1) Try to execute the archive with -Djava.system.class.loader=no.such.Klass,
  60     //     it should fail
  61     TestCommon.run(
  62         "-cp", appJar,
  63         "-Djava.system.class.loader=no.such.Klass",
  64         "ReportMyLoader")
  65       .assertAbnormalExit(output -> {
  66           output.shouldContain(warning);
  67           output.shouldContain("ClassNotFoundException: no.such.Klass");
  68         });
  69 
  70     // (2) Try to execute the archive with -Djava.system.class.loader=TestClassLoader,
  71     //     it should run, but archived non-system classes should be disabled
  72     TestCommon.run(
  73         "-verbose:class",
  74         "-cp", appJar,
  75         "-Djava.system.class.loader=TestClassLoader",
  76         "ReportMyLoader")
  77       .assertNormalExit("ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@", //<-this is still printed because TestClassLoader simply delegates to Launcher$AppLoader, but ...
  78              "TestClassLoader.called = true", //<-but this proves that TestClassLoader was indeed called.
  79              "TestClassLoader: loadClass(\"ReportMyLoader\",") //<- this also proves that TestClassLoader was indeed called.
  80       .assertNormalExit(output -> {
  81         output.shouldMatch(".class,load. TestClassLoader source: file:");
  82         output.shouldMatch(".class,load. ReportMyLoader source: file:.*" + jarFileName);
  83         });
  84 
  85     // (3) Try to change the java.system.class.loader programmatically after
  86     //     the app's main method is executed. This should have no effect in terms of
  87     //     changing or switching the actual system class loader that's already in use.
  88     TestCommon.run(
  89         "-verbose:class",
  90         "-cp", appJar,
  91         "TrySwitchMyLoader")
  92       .assertNormalExit("[class,load] ReportMyLoader source: shared objects file",
  93              "TrySwitchMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@",
  94              "ReportMyLoader's loader = jdk.internal.loader.ClassLoaders$AppClassLoader@",
  95              "TestClassLoader.called = false");
  96   }
  97 }