/*

 * Copyright (c) 2017, 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

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 * questions.

 */

/*

 * @test

 * @bug 8186046

 * @summary Test bootstrap methods throwing an exception

 * @library /lib/testlibrary/bytecode  /java/lang/invoke/common

 * @build jdk.experimental.bytecode.BasicClassBuilder test.java.lang.invoke.lib.InstructionHelper

 * @run testng CondyBSMException

 * @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 CondyBSMException

 */

import org.testng.Assert;

import org.testng.annotations.Test;

import test.java.lang.invoke.lib.InstructionHelper;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

import java.lang.reflect.Constructor;

import static java.lang.invoke.MethodType.methodType;

public class CondyBSMException {

    @Test

    public void testThrowable() {

        test("Throwable", BootstrapMethodError.class, Throwable.class);

    }

    @Test

    public void testError() {

        test("Error", Error.class);

    }

    @Test

    public void testBootstrapMethodError() {

        test("BootstrapMethodError", BootstrapMethodError.class);

    }

    @Test

    public void testRuntimeException() {

        test("RuntimeException", BootstrapMethodError.class, RuntimeException.class);

    }

    @Test

    public void testException() throws Throwable {

        test("Exception", BootstrapMethodError.class, Exception.class);

    }

    static void test(String message, Class<? extends Throwable>... ts) {

        MethodHandle mh = thrower(message, ts[ts.length - 1]);

        Throwable caught = null;

        try {

            mh.invoke();

        }

        catch (Throwable t) {

            caught = t;

        }

        if (caught == null) {

            Assert.fail("Throwable expected");

        }

        String actualMessage = null;

        for (int i = 0; i < ts.length; i++) {

            actualMessage = caught.getMessage();

            Assert.assertNotNull(caught);

            Assert.assertTrue(ts[i].isAssignableFrom(caught.getClass()));

            caught = caught.getCause();

        }

        Assert.assertEquals(actualMessage, message);

    }

    static Throwable throwingBsm(MethodHandles.Lookup l, String name, Class<Throwable> type) throws Throwable {

        Throwable t;

        try {

            Constructor<Throwable> c = type.getDeclaredConstructor(String.class);

            t = c.newInstance(name);

        }

        catch (Exception e) {

            throw new InternalError();

        }

        throw t;

    }

    static MethodHandle thrower(String message, Class<? extends Throwable> t) {

        try {

            return InstructionHelper.ldcDynamicConstant(

                    MethodHandles.lookup(),

                    message, t,

                    "throwingBsm", methodType(Throwable.class, MethodHandles.Lookup.class, String.class, Class.class),

                    S -> { });

        } catch (Exception e) {

            throw new Error(e);

        }

    }

}