1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* @test 27 * @bug 8155106 28 * @run testng/othervm -ea -esa test.java.lang.invoke.ArrayConstructorTest 29 */ 30 package test.java.lang.invoke; 31 32 import java.lang.invoke.MethodHandle; 33 import java.lang.invoke.MethodHandles; 34 35 import static java.lang.invoke.MethodType.methodType; 36 37 import static org.testng.AssertJUnit.*; 38 39 import org.testng.annotations.*; 40 41 42 public class ArrayConstructorTest { 43 44 static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup(); 45 46 @Test 47 public static void testFindConstructorArray() { 48 boolean caught = false; 49 try { 50 MethodHandle h = LOOKUP.findConstructor(Object[].class, methodType(void.class)); 51 } catch (NoSuchMethodException nsme) { 52 assertEquals("no constructor for array class: [Ljava.lang.Object;", nsme.getMessage()); 53 caught = true; 54 } catch (Exception e) { 55 throw new AssertionError("unexpected exception: " + e); 56 } 57 assertTrue(caught); 58 } 59 60 @DataProvider 61 static Object[][] arrayConstructorNegative() { 62 return new Object[][]{ 63 {String.class, IllegalArgumentException.class, "not an array class: java.lang.String"}, 64 {null, NullPointerException.class, null} 65 }; 66 } 67 68 @Test(dataProvider = "arrayConstructorNegative") 69 public static void testArrayConstructorNegative(Class<?> clazz, Class<?> exceptionClass, String message) { 70 boolean caught = false; 71 try { 72 MethodHandle h = MethodHandles.arrayConstructor(clazz); 73 } catch (Exception e) { 74 assertEquals(exceptionClass, e.getClass()); 75 if (message != null) { 76 assertEquals(message, e.getMessage()); 77 } 78 caught = true; 79 } 80 assertTrue(caught); 81 } 82 83 @Test 84 public static void testArrayConstructor() throws Throwable { 85 MethodHandle h = MethodHandles.arrayConstructor(String[].class); 86 assertEquals(methodType(String[].class, int.class), h.type()); 87 String[] a = (String[]) h.invoke(17); 88 assertEquals(17, a.length); 89 } 90 91 }