test/hotspot/jtreg/runtime/cds/appcds/NonExistClasspath.java

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/*
 * @test
 * @summary Handling of non-existent classpath elements during dump time and run time
 * @requires vm.cds
 * @library /test/lib
 * @modules jdk.jartool/sun.tools.jar
 * @compile test-classes/Hello.java
 * @compile test-classes/HelloMore.java
 * @run driver NonExistClasspath
 */

import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import jdk.test.lib.process.OutputAnalyzer;

public class NonExistClasspath {
    public static void main(String[] args) throws Exception {
        String appJar = JarBuilder.getOrCreateHelloJar();
        doTest(appJar, false);
        doTest(appJar, true);
    }

    static void doTest(String appJar, boolean bootcp) throws Exception {
        String classDir = System.getProperty("test.classes");
        String newFile = "non-exist.jar";
        String nonExistPath = classDir + File.separator + newFile;
        final String errorMessage1 = "Unable to use shared archive";
        final String errorMessage2 = "shared class paths mismatch";
        final String errorMessage3 = (bootcp ? "BOOT" : "APP") + " classpath mismatch";

        (new File(nonExistPath)).delete();

        String classPath = nonExistPath + File.pathSeparator + appJar;
        TestCommon.testDump("foobar", TestCommon.list("Hello"), make_args(bootcp, classPath));

        // The nonExistPath doesn't exist yet, so we should be able to run without problem
        TestCommon.run(make_args(bootcp,
                                 classPath,
                                 "-Xlog:class+path=trace",
                                 "Hello"))
            .assertNormalExit();

        // Replace nonExistPath with another non-existent file in the CP, it should still work
        TestCommon.run(make_args(bootcp,
                                 nonExistPath + ".duh"  + File.pathSeparator + appJar,
                                 "-Xlog:class+path=trace",
                                 "Hello"))
            .assertNormalExit();

        // Add a few more non-existent files in the CP, it should still work
        TestCommon.run(make_args(bootcp,
                                 nonExistPath + ".duh"  + File.pathSeparator +
                                 nonExistPath + ".daa"  + File.pathSeparator +
                                 nonExistPath + ".boo"  + File.pathSeparator +
                                 appJar,
                                 "-Xlog:class+path=trace",
                                 "Hello"))
            .assertNormalExit();

        // Or, remove all non-existent paths from the CP, it should still work
        TestCommon.run(make_args(bootcp,
                                 appJar,
                                 "-Xlog:class+path=trace",
                                 "Hello"))
            .assertNormalExit();

        // Now make nonExistPath exist. CDS will fail to load.
        Files.copy(Paths.get(classDir, "hello.jar"),
                   Paths.get(classDir, newFile),
                   StandardCopyOption.REPLACE_EXISTING);

        TestCommon.run(make_args(bootcp,
                                 classPath,
                                 "-Xlog:class+path=trace",
                                 "Hello"))
            .assertAbnormalExit(errorMessage1, errorMessage2, errorMessage3);
    }

    static String[] make_args(boolean bootcp, String cp, String... suffix) {
        String args[];
        if (bootcp) {
            args = TestCommon.concat("-Xbootclasspath/a:" + cp);
        } else {
            args = TestCommon.concat("-cp", cp);
        }

        return TestCommon.concat(args, suffix);
    }
}