85 lines
3.0 KiB
Java
85 lines
3.0 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @run testng/othervm -ea -esa test.java.lang.invoke.ArrayLengthTest
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*/
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package test.java.lang.invoke;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import static org.testng.AssertJUnit.*;
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import org.testng.annotations.*;
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public class ArrayLengthTest {
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@DataProvider
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Object[][] arrayClasses() {
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return new Object[][] {
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{int[].class},
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{long[].class},
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{float[].class},
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{double[].class},
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{boolean[].class},
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{byte[].class},
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{short[].class},
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{char[].class},
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{Object[].class},
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{StringBuffer[].class}
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};
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}
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@Test(dataProvider = "arrayClasses")
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public void testArrayLength(Class<?> arrayClass) throws Throwable {
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MethodHandle arrayLength = MethodHandles.arrayLength(arrayClass);
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assertEquals(int.class, arrayLength.type().returnType());
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assertEquals(arrayClass, arrayLength.type().parameterType(0));
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Object array = MethodHandles.arrayConstructor(arrayClass).invoke(10);
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assertEquals(10, arrayLength.invoke(array));
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}
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@Test(dataProvider = "arrayClasses", expectedExceptions = NullPointerException.class)
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public void testArrayLengthInvokeNPE(Class<?> arrayClass) throws Throwable {
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MethodHandle arrayLength = MethodHandles.arrayLength(arrayClass);
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arrayLength.invoke(null);
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}
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testArrayLengthNoArray() {
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MethodHandles.arrayLength(String.class);
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}
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@Test(expectedExceptions = NullPointerException.class)
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public void testArrayLengthNPE() {
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MethodHandles.arrayLength(null);
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}
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@Test(expectedExceptions = NullPointerException.class)
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public void testNullReference() throws Throwable {
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MethodHandle arrayLength = MethodHandles.arrayLength(String[].class);
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int len = (int)arrayLength.invokeExact((String[])null);
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}
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}
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