82 lines
2.9 KiB
Java
82 lines
2.9 KiB
Java
|
/*
|
||
|
|
* 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|