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

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/*
 * @test
 * @summary AppCDS handling of package.
 * @requires vm.cds
 * @library /test/lib
 * @compile test-classes/C1.java test-classes/C2.java test-classes/C3.java
 *          test-classes/PackageSealingTest.java test-classes/Hello.java
 * @run driver PackageSealing
 */

import java.io.File;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.helpers.ClassFileInstaller;

public class PackageSealing {
    public static void main(String args[]) throws Exception {
        String[] classList = {"foo/C1", "pkg/C2", "PackageSealingTest"};
        String appJar = ClassFileInstaller.writeJar("foo-sealed.jar",
            ClassFileInstaller.Manifest.fromSourceFile("test-classes/package_seal.mf"),
            "PackageSealingTest", "foo/C1", "pkg/C2");

        String helloJar = JarBuilder.getOrCreateHelloJar();
        String jars = helloJar + File.pathSeparator + appJar;

        // test shared package from -cp path
        TestCommon.testDump(jars, TestCommon.list(classList));
        OutputAnalyzer output;
        output = TestCommon.exec(jars, "PackageSealingTest",
                                 "foo/C1", "sealed", "pkg/C2", "notSealed");
        TestCommon.checkExec(output, "OK");

        // test shared package from -Xbootclasspath/a
        TestCommon.dump(helloJar, TestCommon.list(classList),
                        "-Xbootclasspath/a:" + appJar);
        output = TestCommon.exec(helloJar, "-Xbootclasspath/a:" + appJar,
                                 "PackageSealingTest",
                                 "foo/C1", "sealed", "pkg/C2", "notSealed");
        TestCommon.checkExec(output, "OK");

        // Test loading of two classes from the same package from different jars.
        // First loaded class is from a non-sealed package, the second loaded
        // class is from the same package but sealed.
        // The expected result is a SecurityException with a "sealing violation"
        // for the second class.
        classList[1] = "foo/C3"; // C3 is from a non-sealed package
        String[] classList2 = {"foo/C3", "foo/C1", "PackageSealingTest"};
        String nonSealedJar = ClassFileInstaller.writeJar("foo-unsealed.jar", "foo/C3");
        jars = helloJar + File.pathSeparator + nonSealedJar;
        TestCommon.testDump(jars, TestCommon.list(classList2));
        jars += File.pathSeparator + appJar;
        output = TestCommon.exec(jars, "-Xlog:class+load", "PackageSealingTest",
                                 "foo/C3", "notSealed", "foo/C1", "sealed");
        TestCommon.checkExec(output,
                             "foo.C3 source: shared objects file",
                             "sealing violation: can't seal package foo: already defined");

        // Use the jar with the sealed package during dump time.
        // Reverse the class loading order during runtime: load the class in the
        // sealed package following by another class in the same package but unsealed.
        // Same "sealing violation should result in loading the second class.
        jars = helloJar + File.pathSeparator + appJar;
        TestCommon.testDump(jars, TestCommon.list(classList2));
        jars += File.pathSeparator + nonSealedJar;
        output = TestCommon.exec(jars, "-Xlog:class+load", "PackageSealingTest",
                                 "foo/C1", "sealed", "foo/C3", "notSealed");
        TestCommon.checkExec(output,
                             "foo.C1 source: shared objects file",
                             "sealing violation: package foo is sealed");
    }
}