/*

 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @modules java.base/jdk.internal.misc

 * @library /testlibrary /test/lib /compiler/whitebox ..

 * @compile p2/c2.java

 * @build sun.hotspot.WhiteBox

 * @compile/module=java.base java/lang/reflect/ModuleHelper.java

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI JVMGetModuleByPkgName

 */

import static jdk.test.lib.Asserts.*;

import java.lang.ClassLoader;

import java.lang.reflect.Module;

public class JVMGetModuleByPkgName {

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

        Module javaBase = ModuleHelper.GetModuleByPackageName(null, "java/lang");

        if (!javaBase.getName().equals("java.base")) {

            throw new RuntimeException(

                "Failed to get module java.base for package java/lang");

        }

        if (ModuleHelper.GetModuleByPackageName(null, "bad.package.name") != null) {

            throw new RuntimeException("Failed to get null for bad.package.name");

        }

        ClassLoader systemLoader = ClassLoader.getSystemClassLoader();

        if (ModuleHelper.GetModuleByPackageName(systemLoader, "java/lang") != null) {

            throw new RuntimeException(

                "Failed to get null for systemClassLoader and java/lang");

        }

        try {

            ModuleHelper.GetModuleByPackageName(systemLoader, null);

            throw new RuntimeException(

                "Failed to throw NullPointerException for null package name");

        } catch(NullPointerException e) {

             // Expected

        }

        Module unnamedModule = ModuleHelper.GetModuleByPackageName(systemLoader, "");

        if (unnamedModule.isNamed()) {

            throw new RuntimeException(

                "Unexpected named module returned for unnamed package");

        }

        p2.c2 obj = new p2.c2();

        unnamedModule = ModuleHelper.GetModuleByPackageName(systemLoader, "p2");

        if (unnamedModule.isNamed()) {

            throw new RuntimeException(

                "Unexpected named module returned for package p2 in unnamed module");

        }

        MyClassLoader cl1 = new MyClassLoader();

        Module module1 = (Module)ModuleHelper.ModuleObject("module1", cl1, new String[] { "mypackage" });

        assertNotNull(module1, "Module should not be null");

        ModuleHelper.DefineModule(module1, "9.0", "module1/here", new String[] { "mypackage" });

        if (ModuleHelper.GetModuleByPackageName(cl1, "mypackage") != module1) {

            throw new RuntimeException("Wrong module returned for cl1 mypackage");

        }

    }

    static class MyClassLoader extends ClassLoader { }

}