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 * 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.

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 */

/*

 * @test

 * @bug 8186092 8199852

 * @compile ../common/Foo.java

 *          ../common/J.java

 *          I.java

 *          ../common/C.jasm

 *          Task.java

 *          ../common/PreemptingClassLoader.java

 * @run main/othervm Test

 */

public class Test {

    // Break expected error messages into 3 parts since the loader name includes its identity

    // hash which is unique and can't be compared against.

    static String expectedErrorMessage1_part1 = "loader constraint violation for class test.Task: when " +

                                                "selecting overriding method 'test.Foo test.Task.m()' the " +

                                                "class loader PreemptingClassLoader @";

    static String expectedErrorMessage1_part2 = " of the selected method's type test.Task, and the class " +

                                                "loader 'app' for its super type test.J have different Class objects " +

                                                "for the type test.Foo used in the signature (test.Task is in unnamed " +

                                                "module of loader PreemptingClassLoader @";

    static String expectedErrorMessage1_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')";

    static String expectedErrorMessage2_part1 = "loader constraint violation for class test.Task: when " +

                                                "selecting overriding method 'test.Foo test.Task.m()' the " +

                                                "class loader 'VtableLdrCnstrnt_Test_Loader' @";

    static String expectedErrorMessage2_part2 = " of the selected method's type test.Task, and the class " +

                                                "loader 'app' for its super type test.J have different Class objects " +

                                                "for the type test.Foo used in the signature (test.Task is in unnamed " +

                                                "module of loader 'VtableLdrCnstrnt_Test_Loader' @";

    static String expectedErrorMessage2_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')";

    // Test that the error message is correct when a loader constraint error is

    // detected during vtable creation.

    //

    // In this test, during vtable creation for class Task, method "Task.m()LFoo;"

    // overrides "J.m()LFoo;".  But, Task's class Foo and super type J's class Foo

    // are different.  So, a LinkageError exception should be thrown because the

    // loader constraint check will fail.

    public static void test(String loaderName,

                            String expectedErrorMessage_part1,

                            String expectedErrorMessage_part2,

                            String expectedErrorMessage_part3) throws Exception {

        Class<?> c = test.Foo.class; // Forces standard class loader to load Foo.

        String[] classNames = {"test.Task", "test.Foo", "test.I"};

        ClassLoader l = new PreemptingClassLoader(loaderName, classNames);

        l.loadClass("test.Foo");

        try {

            l.loadClass("test.Task").newInstance();

            throw new RuntimeException("Expected LinkageError exception not thrown");

        } catch (LinkageError e) {

            String errorMsg = e.getMessage();

            if (!errorMsg.contains(expectedErrorMessage_part1) ||

                !errorMsg.contains(expectedErrorMessage_part2) ||

                !errorMsg.contains(expectedErrorMessage_part3)) {

                System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" +

                                   "but got:  " + errorMsg);

                throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg);

            }

            System.out.println("Passed with message: " + errorMsg);

        }

    }

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

        test(null, expectedErrorMessage1_part1,

             expectedErrorMessage1_part2, expectedErrorMessage1_part3);

        test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1,

             expectedErrorMessage2_part2, expectedErrorMessage2_part3);

    }

}