/*

 * Copyright (c) 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,

 * 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 8155106

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

 */

package test.java.lang.invoke;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

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

import static org.testng.AssertJUnit.*;

import org.testng.annotations.*;

public class ArrayConstructorTest {

    static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();

    @Test

    public static void testFindConstructorArray() {

        boolean caught = false;

        try {

            MethodHandle h = LOOKUP.findConstructor(Object[].class, methodType(void.class));

        } catch (NoSuchMethodException nsme) {

            assertEquals("no constructor for array class: [Ljava.lang.Object;", nsme.getMessage());

            caught = true;

        } catch (Exception e) {

            throw new AssertionError("unexpected exception: " + e);

        }

        assertTrue(caught);

    }

    @DataProvider

    static Object[][] arrayConstructorNegative() {

        return new Object[][]{

                {String.class, IllegalArgumentException.class, "not an array class: java.lang.String"},

                {null, NullPointerException.class, null}

        };

    }

    @Test(dataProvider = "arrayConstructorNegative")

    public static void testArrayConstructorNegative(Class<?> clazz, Class<?> exceptionClass, String message) {

        boolean caught = false;

        try {

            MethodHandle h = MethodHandles.arrayConstructor(clazz);

        } catch (Exception e) {

            assertEquals(exceptionClass, e.getClass());

            if (message != null) {

                assertEquals(message, e.getMessage());

            }

            caught = true;

        }

        assertTrue(caught);

    }

    @Test

    public static void testArrayConstructor() throws Throwable {

        MethodHandle h = MethodHandles.arrayConstructor(String[].class);

        assertEquals(methodType(String[].class, int.class), h.type());

        String[] a = (String[]) h.invoke(17);

        assertEquals(17, a.length);

    }

}