1 /* 2 * Copyright (c) 2015, 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 // Android-changed: Remove unused import. 27 // import sun.invoke.util.ValueConversions; 28 import sun.invoke.util.Wrapper; 29 import java.lang.invoke.MethodHandles; 30 import java.lang.invoke.MethodType; 31 import java.lang.invoke.MethodHandle; 32 // Android-changed: Remove unused imports. 33 // import java.io.Serializable; 34 // import java.util.Arrays; 35 import org.junit.Test; 36 import static org.junit.Assert.*; 37 38 /* @test 39 * @summary unit tests to assert Wrapper zero identities and conversion behave correctly 40 * @modules java.base/sun.invoke.util 41 * @compile -XDignore.symbol.file WrapperTest.java 42 * @run junit test.sun.invoke.util.WrapperTest 43 */ 44 public class WrapperTest { 45 46 @Test testShortZeroConversion()47 public void testShortZeroConversion() throws Throwable { 48 MethodHandle h1 = MethodHandles.constant(Short.class, (short)42); 49 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 50 MethodHandle h3 = h2.asType(MethodType.methodType(short.class)); // add 0 51 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 52 53 Object x = h4.invokeExact(); 54 assertEquals(x, (short)0); 55 assertTrue(x == Short.valueOf((short)0)); 56 assertTrue(x == Wrapper.SHORT.zero()); 57 } 58 59 @Test testIntZeroConversion()60 public void testIntZeroConversion() throws Throwable { 61 MethodHandle h1 = MethodHandles.constant(Integer.class, 42); 62 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 63 MethodHandle h3 = h2.asType(MethodType.methodType(int.class)); // add 0 64 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 65 66 Object x = h4.invokeExact(); 67 assertEquals(x, 0); 68 assertTrue(x == Integer.valueOf(0)); 69 assertTrue(x == Wrapper.INT.zero()); 70 } 71 72 @Test testLongZeroConversion()73 public void testLongZeroConversion() throws Throwable { 74 MethodHandle h1 = MethodHandles.constant(Long.class, 42L); 75 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 76 MethodHandle h3 = h2.asType(MethodType.methodType(long.class)); // add 0 77 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 78 79 Object x = h4.invokeExact(); 80 assertEquals(x, 0L); 81 assertTrue(x == Long.valueOf(0)); 82 assertTrue(x == Wrapper.LONG.zero()); 83 } 84 85 @Test testByteZeroConversion()86 public void testByteZeroConversion() throws Throwable { 87 MethodHandle h1 = MethodHandles.constant(Byte.class, (byte)42); 88 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 89 MethodHandle h3 = h2.asType(MethodType.methodType(byte.class)); // add 0 90 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 91 92 Object x = h4.invokeExact(); 93 assertEquals(x, (byte)0); 94 assertTrue(x == Byte.valueOf((byte)0)); 95 assertTrue(x == Wrapper.BYTE.zero()); 96 } 97 98 @Test testCharacterZeroConversion()99 public void testCharacterZeroConversion() throws Throwable { 100 MethodHandle h1 = MethodHandles.constant(Character.class, (char)42); 101 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42 102 MethodHandle h3 = h2.asType(MethodType.methodType(char.class)); // add 0 103 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box 104 105 Object x = h4.invokeExact(); 106 assertEquals(x, (char)0); 107 assertTrue(x == Character.valueOf((char)0)); 108 assertTrue(x == Wrapper.CHAR.zero()); 109 } 110 } 111