jdk-24/hotspot/test/runtime/modules/PatchModule/PatchModuleCDS.java

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/*
 * @test
 * @summary test that --patch-module works with CDS
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          jdk.jartool/sun.tools.jar
 * @build PatchModuleMain
 * @run main PatchModuleCDS
 */

import java.io.File;
import jdk.test.lib.InMemoryJavaCompiler;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;

public class PatchModuleCDS {

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

        // Case 1: Test that --patch-module and -Xshare:dump are compatible
        String filename = "patch_module.jsa";
        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=" + filename,
            "-Xshare:dump",
            "--patch-module=java.naming=no/such/directory",
            "-Xlog:class+path=info",
            "-version");
        new OutputAnalyzer(pb.start())
            .shouldContain("ro space:"); // Make sure archive got created.

       // Case 2: Test that only jar file in --patch-module is supported for CDS dumping
        // Create a class file in the module java.base.
        String source = "package javax.naming.spi; "                +
                        "public class NamingManager { "             +
                        "    static { "                             +
                        "        System.out.println(\"I pass!\"); " +
                        "    } "                                    +
                        "}";

        ClassFileInstaller.writeClassToDisk("javax/naming/spi/NamingManager",
             InMemoryJavaCompiler.compile("javax.naming.spi.NamingManager", source, "-Xmodule:java.naming"),
             System.getProperty("test.classes"));

        pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=" + filename,
            "-Xshare:dump",
            "--patch-module=java.base=" + System.getProperty("test.classes"),
            "-Xlog:class+path=info",
            "-version");
        new OutputAnalyzer(pb.start())
            .shouldContain("--patch-module requires a regular file during dumping");

        // Case 3a: Test CDS dumping with jar file in --patch-module
        BasicJarBuilder.build("javanaming", "javax/naming/spi/NamingManager");
        String moduleJar = BasicJarBuilder.getTestJar("javanaming.jar");
        pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=" + filename,
            "-Xshare:dump",
            "--patch-module=java.naming=" + moduleJar,
            "-Xlog:class+load",
            "-Xlog:class+path=info",
            "PatchModuleMain", "javax.naming.spi.NamingManager");
        new OutputAnalyzer(pb.start())
            .shouldContain("ro space:"); // Make sure archive got created.

        // Case 3b: Test CDS run with jar file in --patch-module
        pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=" + filename,
            "-Xshare:auto",
            "--patch-module=java.naming=" + moduleJar,
            "-Xlog:class+load",
            "-Xlog:class+path=info",
            "PatchModuleMain", "javax.naming.spi.NamingManager");
        new OutputAnalyzer(pb.start())
            .shouldContain("I pass!")
            .shouldHaveExitValue(0);
    }
}