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24 
25 /*
26  * @test
27  * @summary At run time, it is OK to append new elements to the classpath that was used at dump time.
28  * @requires vm.cds
29  * @library /test/lib /test/hotspot/jtreg/runtime/appcds
30  * @modules java.base/jdk.internal.misc
31  *          java.management
32  *          jdk.jartool/sun.tools.jar
33  * @compile ../test-classes/Hello.java
34  * @compile ../test-classes/HelloMore.java
35  * @run driver AppendClasspath
36  */
37 
38 import java.io.File;
39 
40 public class AppendClasspath extends DynamicArchiveTestBase {
41 
main(String[] args)42     public static void main(String[] args) throws Exception {
43         runTest(AppendClasspath::testDefaultBase);
44     }
45 
testDefaultBase()46     static void testDefaultBase() throws Exception {
47         String topArchiveName = getNewArchiveName("top");
48         doTest(topArchiveName);
49     }
50 
doTest(String topArchiveName)51     private static void doTest(String topArchiveName) throws Exception {
52         String appJar = JarBuilder.getOrCreateHelloJar();
53         String appJar2 = JarBuilder.build("AppendClasspath_HelloMore", "HelloMore");
54 
55         // Dump an archive with a specified JAR file in -classpath
56         dump(topArchiveName,
57              "-Xlog:cds",
58              "-Xlog:cds+dynamic=debug",
59              "-cp", appJar, "Hello")
60             .assertNormalExit(output -> {
61                     output.shouldContain("Buffer-space to target-space delta")
62                            .shouldContain("Written dynamic archive 0x");
63                 });
64 
65         // runtime with classpath containing the one used in dump time,
66         // i.e. the dump time classpath is a prefix of the runtime classpath.
67         run(topArchiveName,
68             "-Xlog:class+load",
69             "-Xlog:cds+dynamic=debug,cds=debug",
70             "-cp", appJar + File.pathSeparator + appJar2,
71             "HelloMore")
72             .assertNormalExit(output -> {
73                     output.shouldContain("Hello source: shared objects file")
74                           .shouldContain("Hello World ... More")
75                           .shouldHaveExitValue(0);
76                 });
77 
78         // reverse the order of the 2 jar files so that the dump time classpath
79         // is no longer a prefix of the runtime classpath. The Hello class
80         // should be loaded from the jar file.
81         run(topArchiveName,
82             "-Xlog:class+load",
83             "-Xlog:cds+dynamic=debug,cds=debug",
84             "-cp", appJar2 + File.pathSeparator + appJar,
85             "HelloMore")
86             .assertAbnormalExit(output -> {
87                     output.shouldContain("shared class paths mismatch")
88                           .shouldHaveExitValue(1);
89                 });
90 
91     }
92 }
93