hotspot/test/runtime/modules/JVMAddModuleExportToAllUnnamed.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @modules java.base/jdk.internal.misc
 * @library /test/lib ..
 * @compile p2/c2.java
 * @compile p1/c1.java
 * @build sun.hotspot.WhiteBox
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
 * @compile/module=java.base java/lang/reflect/ModuleHelper.java
 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI JVMAddModuleExportToAllUnnamed
 */

import java.lang.reflect.Module;
import static jdk.test.lib.Asserts.*;

public class JVMAddModuleExportToAllUnnamed {

    // Check that a class in a package in module1 cannot access a class
    // that is in the unnamed module if the accessing package is strict.
    public static void main(String args[]) throws Throwable {
        Object m1;

        // Get the java.lang.reflect.Module object for module java.base.
        Class jlObject = Class.forName("java.lang.Object");
        Object jlObject_jlrM = jlObject.getModule();
        assertNotNull(jlObject_jlrM, "jlrModule object of java.lang.Object should not be null");

        // Get the class loader for JVMAddModuleExportToAllUnnamed and assume it's also used to
        // load class p1.c1.
        ClassLoader this_cldr = JVMAddModuleExportToAllUnnamed.class.getClassLoader();

        // Define a module for p1.
        m1 = ModuleHelper.ModuleObject("module1", this_cldr, new String[] { "p1" });
        assertNotNull(m1, "Module should not be null");
        ModuleHelper.DefineModule(m1, "9.0", "m1/here", new String[] { "p1" });
        ModuleHelper.AddReadsModule(m1, jlObject_jlrM);

        // Make package p1 in m1 visible to everyone.
        ModuleHelper.AddModuleExportsToAll(m1, "p1");

        // p1.c1's ctor tries to call a method in p2.c2.  This should not work
        // because p2 is in the unnamed module and p1.c1 is strict.
        try {
            Class p1_c1_class = Class.forName("p1.c1");
            p1_c1_class.newInstance();
        } catch (IllegalAccessError e) {
            System.out.println(e.getMessage());
            if (!e.getMessage().contains("does not read unnamed module")) {
                throw new RuntimeException("Wrong message: " + e.getMessage());
            }
        }
    }
}