1 /*
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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
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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).
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15  * You should have received a copy of the GNU General Public License version
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23 
24 /**
25  * @test
26  * @requires vm.jvmci
27  * @library ../../../../../
28  * @modules jdk.internal.vm.ci/jdk.vm.ci.meta
29  *          jdk.internal.vm.ci/jdk.vm.ci.runtime
30  *          java.base/jdk.internal.misc
31  * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:-UseJVMCICompiler jdk.vm.ci.runtime.test.TestConstantReflectionProvider
32  */
33 
34 package jdk.vm.ci.runtime.test;
35 
36 import jdk.vm.ci.meta.ConstantReflectionProvider;
37 import jdk.vm.ci.meta.JavaConstant;
38 import jdk.vm.ci.meta.JavaKind;
39 import org.junit.Test;
40 
41 import java.lang.reflect.Array;
42 import java.util.List;
43 
44 import static org.junit.Assert.assertEquals;
45 import static org.junit.Assert.assertFalse;
46 import static org.junit.Assert.assertNotNull;
47 import static org.junit.Assert.assertNull;
48 import static org.junit.Assert.assertTrue;
49 
50 /**
51  * Tests for {@link ConstantReflectionProvider}. It assumes an implementation of the interface that
52  * actually returns non-null results for access operations that are possible, i.e., the tests will
53  * fail for an implementation that spuriously returns null (which is allowed by the specification).
54  */
55 public class TestConstantReflectionProvider extends TypeUniverse {
56 
57     @Test
constantEqualsTest()58     public void constantEqualsTest() {
59         for (ConstantValue c1 : constants()) {
60             for (ConstantValue c2 : constants()) {
61                 // test symmetry
62                 assertEquals(constantReflection.constantEquals(c1.value, c2.value), constantReflection.constantEquals(c2.value, c1.value));
63                 if (c1.value.getJavaKind() != JavaKind.Object && c2.value.getJavaKind() != JavaKind.Object) {
64                     assertEquals(c1.value.equals(c2.value), constantReflection.constantEquals(c2.value, c1.value));
65                 }
66             }
67         }
68     }
69 
70     @Test
readArrayLengthTest()71     public void readArrayLengthTest() {
72         for (ConstantValue cv : constants()) {
73             JavaConstant c = cv.value;
74             Integer actual = constantReflection.readArrayLength(c);
75             if (c.getJavaKind() != JavaKind.Object || c.isNull() || !cv.boxed.getClass().isArray()) {
76                 assertNull(actual);
77             } else {
78                 assertNotNull(actual);
79                 int actualInt = actual;
80                 assertEquals(Array.getLength(cv.boxed), actualInt);
81             }
82         }
83     }
84 
85     static class PrimitiveConstants {
86         static final long LONG_CONST = 42;
87         static final int INT_CONST = 66;
88         static final byte BYTE_CONST = 123;
89         static final boolean BOOL_CONST = true;
90     }
91 
92     static class BoxedConstants {
93         static final Long LONG_CONST = 42L;
94         static final Integer INT_CONST = 66;
95         static final Byte BYTE_CONST = 123;
96         static final Boolean BOOL_CONST = true;
97     }
98 
99     @Test
boxTest()100     public void boxTest() {
101         for (ConstantValue cv : constants()) {
102             JavaConstant c = cv.value;
103             JavaConstant boxed = constantReflection.boxPrimitive(c);
104             if (boxed != null && c.getJavaKind().isPrimitive()) {
105                 assertTrue(boxed.getJavaKind().isObject());
106                 assertFalse(boxed.isNull());
107             }
108         }
109 
110         List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
111         List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
112         for (int i = 0; i < primitiveConstants.size(); i++) {
113             ConstantValue prim = primitiveConstants.get(i);
114             ConstantValue box = boxedConstants.get(i);
115             assertEquals(box.value, constantReflection.boxPrimitive(prim.value));
116         }
117 
118         assertNull(constantReflection.boxPrimitive(JavaConstant.NULL_POINTER));
119     }
120 
121     @Test
unboxTest()122     public void unboxTest() {
123         for (ConstantValue cv : constants()) {
124             JavaConstant c = cv.value;
125             JavaConstant unboxed = c.isNull() ? null : constantReflection.unboxPrimitive(c);
126             if (unboxed != null) {
127                 assertFalse(unboxed.getJavaKind().isObject());
128             }
129         }
130         List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
131         List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
132         for (int i = 0; i < primitiveConstants.size(); i++) {
133             ConstantValue prim = primitiveConstants.get(i);
134             ConstantValue box = boxedConstants.get(i);
135             assert prim.getSimpleName().equals(box.getSimpleName());
136             assertEquals(prim.value, constantReflection.unboxPrimitive(box.value));
137         }
138 
139         assertNull(constantReflection.unboxPrimitive(JavaConstant.NULL_POINTER));
140     }
141 }
142