1 /*
   2  * Copyright (c) 2012, 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 /**
  25  * @test
  26  * @compile TestConstantReflectionProvider.java TypeUniverse.java TestMetaAccessProvider.java
  27  * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.internal.jvmci.runtime.test.TestConstantReflectionProvider
  28  */
  29 
  30 package jdk.internal.jvmci.runtime.test;
  31 
  32 import static org.junit.Assert.*;
  33 
  34 import java.lang.reflect.*;
  35 import java.util.*;
  36 
  37 import jdk.internal.jvmci.meta.*;
  38 
  39 import org.junit.*;
  40 
  41 /**
  42  * Tests for {@link ConstantReflectionProvider}. It assumes an implementation of the interface that
  43  * actually returns non-null results for access operations that are possible, i.e., the tests will
  44  * fail for an implementation that spuriously returns null (which is allowed by the specification).
  45  */
  46 public class TestConstantReflectionProvider extends TypeUniverse {
  47 
  48     @Test
  49     public void constantEqualsTest() {
  50         for (ConstantValue c1 : constants()) {
  51             for (ConstantValue c2 : constants()) {
  52                 // test symmetry
  53                 assertEquals(constantReflection.constantEquals(c1.value, c2.value), constantReflection.constantEquals(c2.value, c1.value));
  54                 if (c1.value.getJavaKind() != JavaKind.Object && c2.value.getJavaKind() != JavaKind.Object) {
  55                     assertEquals(c1.value.equals(c2.value), constantReflection.constantEquals(c2.value, c1.value));
  56                 }
  57             }
  58         }
  59     }
  60 
  61     @Test
  62     public void readArrayLengthTest() {
  63         for (ConstantValue cv : constants()) {
  64             JavaConstant c = cv.value;
  65             Integer actual = constantReflection.readArrayLength(c);
  66             if (c.getJavaKind() != JavaKind.Object || c.isNull() || !cv.boxed.getClass().isArray()) {
  67                 assertNull(actual);
  68             } else {
  69                 assertNotNull(actual);
  70                 int actualInt = actual;
  71                 assertEquals(Array.getLength(cv.boxed), actualInt);
  72             }
  73         }
  74     }
  75 
  76     static class PrimitiveConstants {
  77         static final long LONG_CONST = 42;
  78         static final int INT_CONST = 66;
  79         static final byte BYTE_CONST = 123;
  80         static final boolean BOOL_CONST = true;
  81     }
  82 
  83     static class BoxedConstants {
  84         static final Long LONG_CONST = 42L;
  85         static final Integer INT_CONST = 66;
  86         static final Byte BYTE_CONST = 123;
  87         static final Boolean BOOL_CONST = true;
  88     }
  89 
  90     @Test
  91     public void boxTest() {
  92         for (ConstantValue cv : constants()) {
  93             JavaConstant c = cv.value;
  94             JavaConstant boxed = constantReflection.boxPrimitive(c);
  95             if (boxed != null && c.getJavaKind().isPrimitive()) {
  96                 assertTrue(boxed.getJavaKind().isObject());
  97                 assertFalse(boxed.isNull());
  98             }
  99         }
 100 
 101         List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
 102         List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
 103         for (int i = 0; i < primitiveConstants.size(); i++) {
 104             ConstantValue prim = primitiveConstants.get(i);
 105             ConstantValue box = boxedConstants.get(i);
 106             assertEquals(box.value, constantReflection.boxPrimitive(prim.value));
 107         }
 108 
 109         assertNull(constantReflection.boxPrimitive(JavaConstant.NULL_POINTER));
 110     }
 111 
 112     @Test
 113     public void unboxTest() {
 114         for (ConstantValue cv : constants()) {
 115             JavaConstant c = cv.value;
 116             JavaConstant unboxed = c.isNull() ? null : constantReflection.unboxPrimitive(c);
 117             if (unboxed != null) {
 118                 assertFalse(unboxed.getJavaKind().isObject());
 119             }
 120         }
 121         List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
 122         List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
 123         for (int i = 0; i < primitiveConstants.size(); i++) {
 124             ConstantValue prim = primitiveConstants.get(i);
 125             ConstantValue box = boxedConstants.get(i);
 126             assert prim.getSimpleName().equals(box.getSimpleName());
 127             assertEquals(prim.value, constantReflection.unboxPrimitive(box.value));
 128         }
 129 
 130         assertNull(constantReflection.unboxPrimitive(JavaConstant.NULL_POINTER));
 131     }
 132 }