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 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 to assert Wrapper zero identities and conversion behave correctly
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 public class WrapperTest {
43
44 @Test
45 public void testShortZeroConversion() throws Throwable {
46 MethodHandle h1 = MethodHandles.constant(Short.class, (short)42);
47 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42
48 MethodHandle h3 = h2.asType(MethodType.methodType(short.class)); // add 0
49 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box
50
51 Object x = h4.invokeExact();
52 assertEquals(x, (short)0);
53 assertTrue(x == Short.valueOf((short)0));
54 assertTrue(x == Wrapper.SHORT.zero());
55 }
56
57 @Test
58 public void testIntZeroConversion() throws Throwable {
59 MethodHandle h1 = MethodHandles.constant(Integer.class, 42);
60 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42
61 MethodHandle h3 = h2.asType(MethodType.methodType(int.class)); // add 0
62 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box
63
64 Object x = h4.invokeExact();
65 assertEquals(x, 0);
66 assertTrue(x == Integer.valueOf(0));
67 assertTrue(x == Wrapper.INT.zero());
68 }
69
70 @Test
71 public void testLongZeroConversion() throws Throwable {
72 MethodHandle h1 = MethodHandles.constant(Long.class, 42L);
73 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42
74 MethodHandle h3 = h2.asType(MethodType.methodType(long.class)); // add 0
75 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box
76
77 Object x = h4.invokeExact();
78 assertEquals(x, 0L);
79 assertTrue(x == Long.valueOf(0));
80 assertTrue(x == Wrapper.LONG.zero());
81 }
82
83 @Test
84 public void testByteZeroConversion() throws Throwable {
85 MethodHandle h1 = MethodHandles.constant(Byte.class, (byte)42);
86 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42
87 MethodHandle h3 = h2.asType(MethodType.methodType(byte.class)); // add 0
88 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box
89
90 Object x = h4.invokeExact();
91 assertEquals(x, (byte)0);
92 assertTrue(x == Byte.valueOf((byte)0));
93 assertTrue(x == Wrapper.BYTE.zero());
94 }
95
96 @Test
97 public void testCharacterZeroConversion() throws Throwable {
98 MethodHandle h1 = MethodHandles.constant(Character.class, (char)42);
99 MethodHandle h2 = h1.asType(MethodType.methodType(void.class)); // drop 42
100 MethodHandle h3 = h2.asType(MethodType.methodType(char.class)); // add 0
101 MethodHandle h4 = h3.asType(MethodType.methodType(Object.class)); // box
102
103 Object x = h4.invokeExact();
104 assertEquals(x, (char)0);
105 assertTrue(x == Character.valueOf((char)0));
106 assertTrue(x == Wrapper.CHAR.zero());
107 }
108 }