/*

 * Copyright (c) 2012, 2013, 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

 * @bug 8003639

 * @summary defaultMethod resolution and verification

 * @run main DefaultMethodRegressionTests

 */

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

/**

 * This set of classes/interfaces (K/I/C) is specially designed to expose a

 * bug in the JVM where it did not find some overloaded methods in some

 * specific situations. (fixed by hotspot changeset ffb9316fd9ed).

 */

interface K {

    int bbb(Long l);

}

interface I extends K {

    default void aaa() {}

    default void aab() {}

    default void aac() {}

    default int bbb(Integer i) { return 22; }

    default int bbb(Float f) { return 33; }

    default int bbb(Long l) { return 44; }

    default int bbb(Double d) { return 55; }

    default int bbb(String s) { return 66; }

    default void caa() {}

    default void cab() {}

    default void cac() {}

}

class C implements I {}

public class DefaultMethodRegressionTests {

    public static void main(String... args) {

        new DefaultMethodRegressionTests().run(args);

    }

    void run(String... args) {

        testLostOverloadedMethod();

        System.out.println("testLostOverloadedMethod: OK");

        testInferenceVerifier();

        System.out.println("testInferenceVerifier: OK");

    }

    void testLostOverloadedMethod() {

        C c = new C();

        assertEquals(c.bbb(new Integer(1)), 22);

        assertEquals(c.bbb(new Float(1.1)), 33);

        assertEquals(c.bbb(new Long(1L)), 44);

        assertEquals(c.bbb(new Double(0.01)), 55);

        assertEquals(c.bbb(new String("")), 66);

    }

    // Test to ensure that the inference verifier accepts older classfiles

    // with classes that implement interfaces with defaults.

    void testInferenceVerifier() {

        // interface I { int m() default { return 99; } }

        byte I_bytes[] = {

            (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x34,

            0x00, 0x08, 0x07, 0x00, 0x06, 0x07, 0x00, 0x07,

            0x01, 0x00, 0x03, 0x66, 0x6f, 0x6f, 0x01, 0x00,

            0x03, 0x28, 0x29, 0x49, 0x01, 0x00, 0x04, 0x43,

            0x6f, 0x64, 0x65, 0x01, 0x00, 0x01, 0x49, 0x01,

            0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c,

            0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65,

            0x63, 0x74, 0x06, 0x00, 0x00, 0x01, 0x00, 0x02,

            0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x01,

            0x00, 0x03, 0x00, 0x04, 0x00, 0x01, 0x00, 0x05,

            0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x00, 0x01,

            0x00, 0x00, 0x00, 0x03, 0x10, 0x63, (byte)0xac, 0x00,

            0x00, 0x00, 0x00, 0x00, 0x00

        };

        // public class C implements I {}  /* -target 1.5 */

        byte C_bytes[] = {

            (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x31,

            0x00, 0x0c, 0x0a, 0x00, 0x03, 0x00, 0x08, 0x07,

            0x00, 0x09, 0x07, 0x00, 0x0a, 0x07, 0x00, 0x0b,

            0x01, 0x00, 0x06, 0x3c, 0x69, 0x6e, 0x69, 0x74,

            0x3e, 0x01, 0x00, 0x03, 0x28, 0x29, 0x56, 0x01,

            0x00, 0x04, 0x43, 0x6f, 0x64, 0x65, 0x0c, 0x00,

            0x05, 0x00, 0x06, 0x01, 0x00, 0x01, 0x43, 0x01,

            0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c,

            0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65,

            0x63, 0x74, 0x01, 0x00, 0x01, 0x49, 0x00, 0x21,

            0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x04,

            0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x05,

            0x00, 0x06, 0x00, 0x01, 0x00, 0x07, 0x00, 0x00,

            0x00, 0x11, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00,

            0x00, 0x05, 0x2a, (byte)0xb7, 0x00, 0x01, (byte)0xb1, 0x00,

            0x00, 0x00, 0x00, 0x00, 0x00

        };

        ClassLoader cl = new ClassLoader() {

            protected Class<?> findClass(String name) {

                if (name.equals("I")) {

                    return defineClass("I", I_bytes, 0, I_bytes.length);

                } else if (name.equals("C")) {

                    return defineClass("C", C_bytes, 0, C_bytes.length);

                } else {

                    return null;

                }

            }

        };

        try {

            Class.forName("C", true, cl);

        } catch (Exception e) {

            // unmodified verifier will throw VerifyError

            throw new RuntimeException(e);

        }

    }

    void assertEquals(Object o1, Object o2) {

        System.out.print("Expected: " + o1);

        System.out.println(", Obtained: " + o2);

        if (!o1.equals(o2)) {

            throw new RuntimeException("got unexpected values");

        }

    }

}