/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2018 SAP SE. 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

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 */

/**

 * @test

 * @bug 8199852

 * @summary Test exception messages of LinkageError. Two class loaders load

 *          two different versions of a class. Should trigger exception in

 *          SystemDictionary::check_constraints().

 * @library /test/lib

 * @compile D_ambgs.jasm

 * @run driver ClassFileInstaller test.D_ambgs

 * @compile  ../common/PreemptingClassLoader.java

 *           test/D_ambgs.java Test.java test/B.java

 * @run driver ClassFileInstaller test.B

 * @run main/othervm Test

 */

import test.*;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

import java.io.*;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

public class Test {

    //  Force LinkageError.

    //

    //  Derived from test runtime/6626217.

    //

    //  Uses the specialized class loader PreemptingClassLoader.

    //  PreemptingClassLoader only loads files with names passed to it in its

    //  constructor. If it does not find it, it delegates to the super class loader.

    //

    //  A    // interface

    //  |

    //  B    // Compiled to the current working directory so that it is found by our

    //       // special class loader. B uses D, so that loading B triggers loading D.

    //

    //  C    // An abstract class.

    //  |

    //  D    // Class with two different implementations D1 and D2. D2 is

    //       // compiled to the current working directory so that it is found by our

    //       // special class loader.

    //

    // First, the bootstrap loader will load D1. It already has loaded interface A.

    // Then, the second class loader PreemptingClassLoader will load B. Recursive,

    // it tries to load interface A. As it does not find it (there is no A.impl2),

    // it asks the super classloader for A.

    // Then it loads the D2 variant of D from the current working directory and it's

    // superclass C. This fails as D1 is already loaded with the same superclass.

    // Break the expectedErrorMessage into 2 pieces since the loader name will include

    // its identity hash and can not be compared against.

    static String expectedErrorMessage_part1 = "loader constraint violation: loader PreemptingClassLoader @";

    public static void test_access() throws Exception {

        try {

            // Make a Class 'D_ambgs' under the default loader.

            // This uses the implementation from the .java file.

            C c_1 = new D_ambgs();

            // Some classes under a new Loader, loader2, including, indirectly,

            // another version of 'D_ambgs'

            String[] classNames = {"test.B", "test.D_ambgs"};

            ClassLoader loader2 = new PreemptingClassLoader(null, classNames, false);

            Class       class2  = loader2.loadClass("test.B");

            A           iface   = (A)class2.newInstance();

            // Call D1.make() loaded by bootstrap loader with B loaded by Loader2.

            D_ambgs[] x2 = c_1.make(iface);

            throw new RuntimeException("Expected LinkageError was not thrown.");

        } catch (LinkageError jle) {

            String errorMsg = jle.getMessage();

            if (!errorMsg.contains(expectedErrorMessage_part1) ||

                !errorMsg.contains(expectedErrorMessage_part2)) {

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

                                   "but got:  " + errorMsg);

                throw new RuntimeException("Wrong error message of LinkageError.");

            } else {

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

            }

        }

    }

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

        test_access();

    }

}