| /* |
| * 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 |
| * @run testng/othervm -ea -esa test.java.lang.invoke.ArrayLengthTest |
| */ |
| package test.java.lang.invoke; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| |
| import static org.testng.AssertJUnit.*; |
| |
| import org.testng.annotations.*; |
| |
| public class ArrayLengthTest { |
| |
| @DataProvider |
| Object[][] arrayClasses() { |
| return new Object[][] { |
| {int[].class}, |
| {long[].class}, |
| {float[].class}, |
| {double[].class}, |
| {boolean[].class}, |
| {byte[].class}, |
| {short[].class}, |
| {char[].class}, |
| {Object[].class}, |
| {StringBuffer[].class} |
| }; |
| } |
| |
| @Test(dataProvider = "arrayClasses") |
| public void testArrayLength(Class<?> arrayClass) throws Throwable { |
| MethodHandle arrayLength = MethodHandles.arrayLength(arrayClass); |
| assertEquals(int.class, arrayLength.type().returnType()); |
| assertEquals(arrayClass, arrayLength.type().parameterType(0)); |
| Object array = MethodHandles.arrayConstructor(arrayClass).invoke(10); |
| assertEquals(10, arrayLength.invoke(array)); |
| } |
| |
| @Test(dataProvider = "arrayClasses", expectedExceptions = NullPointerException.class) |
| public void testArrayLengthInvokeNPE(Class<?> arrayClass) throws Throwable { |
| MethodHandle arrayLength = MethodHandles.arrayLength(arrayClass); |
| arrayLength.invoke(null); |
| } |
| |
| @Test(expectedExceptions = IllegalArgumentException.class) |
| public void testArrayLengthNoArray() { |
| MethodHandles.arrayLength(String.class); |
| } |
| |
| @Test(expectedExceptions = NullPointerException.class) |
| public void testArrayLengthNPE() { |
| MethodHandles.arrayLength(null); |
| } |
| |
| } |