1 /* 2 * Copyright (c) 2009, 2013, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package test.sun.invoke.util; 25 26 import sun.invoke.util.ValueConversions; 27 import sun.invoke.util.Wrapper; 28 import java.lang.invoke.MethodHandles; 29 import java.lang.invoke.MethodType; 30 import java.lang.invoke.MethodHandle; 31 import java.io.Serializable; 32 import java.util.Arrays; 33 import org.junit.Test; 34 import static org.junit.Assert.*; 35 36 /* @test 37 * @summary unit tests for making sure Wrapper.zero doesn't leak 38 * @modules java.base/sun.invoke.util 39 * @compile -XDignore.symbol.file WrapperTest.java 40 * @run junit/othervm test.sun.invoke.util.WrapperTest 41 */ 42 43 public class WrapperTest { 44 45 @Test 46 public void testShortZeroConversion() throws Throwable { 47 MethodHandle h1 = MethodHandles.constant(Short.class, (short)42); 48 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 49 MethodHandle h3 = h2.asType(MethodType.methodType(short.class)); // add 0 50 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 51 52 Object x = h4.invokeExact(); 53 assertEquals(x, (short)0); 54 assertTrue(x == Short.valueOf((short)0)); 55 assertFalse(x == Wrapper.SHORT.zero()); 56 } 57 58 @Test 59 public void testIntZeroConversion() throws Throwable { 60 MethodHandle h1 = MethodHandles.constant(Integer.class, 42); 61 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 62 MethodHandle h3 = h2.asType(MethodType.methodType(int.class)); // add 0 63 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 64 65 Object x = h4.invokeExact(); 66 assertEquals(x, 0); 67 assertTrue(x == Integer.valueOf(0)); 68 assertFalse(x == Wrapper.INT.zero()); 69 } 70 71 @Test 72 public void testLongZeroConversion() throws Throwable { 73 MethodHandle h1 = MethodHandles.constant(Long.class, 42L); 74 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 75 MethodHandle h3 = h2.asType(MethodType.methodType(long.class)); // add 0 76 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 77 78 Object x = h4.invokeExact(); 79 assertEquals(x, 0L); 80 assertTrue(x == Long.valueOf(0)); 81 assertFalse(x == Wrapper.LONG.zero()); 82 } 83 84 @Test 85 public void testByteZeroConversion() throws Throwable { 86 MethodHandle h1 = MethodHandles.constant(Byte.class, (byte)42); 87 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 88 MethodHandle h3 = h2.asType(MethodType.methodType(Byte.class)); // add 0 89 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 90 91 Object x = h4.invokeExact(); 92 assertEquals(x, null); 93 } 94 95 @Test 96 public void testCharacterZeroConversion() throws Throwable { 97 MethodHandle h1 = MethodHandles.constant(Character.class, (char)42); 98 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 99 MethodHandle h3 = h2.asType(MethodType.methodType(Character.class)); // add 0 100 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 101 102 Object x = h4.invokeExact(); 103 assertEquals(x, null); 104 } 105 }