/*

 * Copyright (c) 2015, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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,

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 *

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/* @test

 * @bug 8139885

 * @run testng/othervm -ea -esa test.java.lang.invoke.FindAccessTest

 */

package test.java.lang.invoke;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

import java.lang.invoke.MethodHandles.Lookup;

import java.lang.invoke.MethodType;

import static org.testng.AssertJUnit.*;

import org.testng.annotations.*;

/**

 * Tests for Lookup.findClass/accessClass extensions added in JEP 274.

 */

public class FindAccessTest {

    static final Lookup LOOKUP = MethodHandles.lookup();

    @Test

    public static void testFindSpecial() throws Throwable {

        FindSpecial.C c = new FindSpecial.C();

        assertEquals("I1.m", c.m());

        MethodType t = MethodType.methodType(String.class);

        MethodHandle ci1m = LOOKUP.findSpecial(FindSpecial.I1.class, "m", t, FindSpecial.C.class);

        assertEquals("I1.m", (String) ci1m.invoke(c));

    }

    @Test

    public static void testFindSpecialAbstract() throws Throwable {

        FindSpecial.C c = new FindSpecial.C();

        assertEquals("q", c.q());

        MethodType t = MethodType.methodType(String.class);

        boolean caught = false;

        try {

            MethodHandle ci3q = LOOKUP.findSpecial(FindSpecial.I3.class, "q", t, FindSpecial.C.class);

        } catch (Throwable thrown) {

            if (!(thrown instanceof IllegalAccessException) || !FindSpecial.ABSTRACT_ERROR.equals(thrown.getMessage())) {

                throw new AssertionError(thrown.getMessage(), thrown);

            }

            caught = true;

        }

        assertTrue(caught);

    }

    @Test(expectedExceptions = {ClassNotFoundException.class})

    public static void testFindClassCNFE() throws ClassNotFoundException, IllegalAccessException {

        LOOKUP.findClass("does.not.Exist");

    }

    static class FindSpecial {

        interface I1 {

            default String m() {

                return "I1.m";

            }

        }

        interface I2 {

            default String m() {

                return "I2.m";

            }

        }

        interface I3 {

            String q();

        }

        static class C implements I1, I2, I3 {

            public String m() {

                return I1.super.m();

            }

            public String q() {

                return "q";

            }

        }

        static final String ABSTRACT_ERROR = "no such method: test.java.lang.invoke.FindAccessTest$FindSpecial$I3.q()String/invokeSpecial";

    }

}