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  * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
  27  * @compile TestConstantReflectionProvider.java TypeUniverse.java TestMetaAccessProvider.java
  28  * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.vm.ci.runtime.test.TestConstantReflectionProvider
  29  */
  30 
  31 package jdk.vm.ci.runtime.test;
  32 
  33 import static org.junit.Assert.*;
  34 
  35 import java.lang.reflect.*;
  36 import java.util.*;
  37 
  38 import jdk.vm.ci.meta.*;
  39 
  40 import org.junit.*;
  41 
  42 /**
  43  * Tests for {@link ConstantReflectionProvider}. It assumes an implementation of the interface that
  44  * actually returns non-null results for access operations that are possible, i.e., the tests will
  45  * fail for an implementation that spuriously returns null (which is allowed by the specification).
  46  */
  47 public class TestConstantReflectionProvider extends TypeUniverse {
  48 
  49     @Test
  50     public void constantEqualsTest() {
  51         for (ConstantValue c1 : constants()) {
  52             for (ConstantValue c2 : constants()) {
  53                 // test symmetry
  54                 assertEquals(constantReflection.constantEquals(c1.value, c2.value), constantReflection.constantEquals(c2.value, c1.value));
  55                 if (c1.value.getJavaKind() != JavaKind.Object && c2.value.getJavaKind() != JavaKind.Object) {
  56                     assertEquals(c1.value.equals(c2.value), constantReflection.constantEquals(c2.value, c1.value));
  57                 }
  58             }
  59         }
  60     }
  61 
  62     @Test
  63     public void readArrayLengthTest() {
  64         for (ConstantValue cv : constants()) {
  65             JavaConstant c = cv.value;
  66             Integer actual = constantReflection.readArrayLength(c);
  67             if (c.getJavaKind() != JavaKind.Object || c.isNull() || !cv.boxed.getClass().isArray()) {
  68                 assertNull(actual);
  69             } else {
  70                 assertNotNull(actual);
  71                 int actualInt = actual;
  72                 assertEquals(Array.getLength(cv.boxed), actualInt);
  73             }
  74         }
  75     }
  76 
  77     static class PrimitiveConstants {
  78         static final long LONG_CONST = 42;
  79         static final int INT_CONST = 66;
  80         static final byte BYTE_CONST = 123;
  81         static final boolean BOOL_CONST = true;
  82     }
  83 
  84     static class BoxedConstants {
  85         static final Long LONG_CONST = 42L;
  86         static final Integer INT_CONST = 66;
  87         static final Byte BYTE_CONST = 123;
  88         static final Boolean BOOL_CONST = true;
  89     }
  90 
  91     @Test
  92     public void boxTest() {
  93         for (ConstantValue cv : constants()) {
  94             JavaConstant c = cv.value;
  95             JavaConstant boxed = constantReflection.boxPrimitive(c);
  96             if (boxed != null && c.getJavaKind().isPrimitive()) {
  97                 assertTrue(boxed.getJavaKind().isObject());
  98                 assertFalse(boxed.isNull());
  99             }
 100         }
 101 
 102         List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
 103         List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
 104         for (int i = 0; i < primitiveConstants.size(); i++) {
 105             ConstantValue prim = primitiveConstants.get(i);
 106             ConstantValue box = boxedConstants.get(i);
 107             assertEquals(box.value, constantReflection.boxPrimitive(prim.value));
 108         }
 109 
 110         assertNull(constantReflection.boxPrimitive(JavaConstant.NULL_POINTER));
 111     }
 112 
 113     @Test
 114     public void unboxTest() {
 115         for (ConstantValue cv : constants()) {
 116             JavaConstant c = cv.value;
 117             JavaConstant unboxed = c.isNull() ? null : constantReflection.unboxPrimitive(c);
 118             if (unboxed != null) {
 119                 assertFalse(unboxed.getJavaKind().isObject());
 120             }
 121         }
 122         List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
 123         List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
 124         for (int i = 0; i < primitiveConstants.size(); i++) {
 125             ConstantValue prim = primitiveConstants.get(i);
 126             ConstantValue box = boxedConstants.get(i);
 127             assert prim.getSimpleName().equals(box.getSimpleName());
 128             assertEquals(prim.value, constantReflection.unboxPrimitive(box.value));
 129         }
 130 
 131         assertNull(constantReflection.unboxPrimitive(JavaConstant.NULL_POINTER));
 132     }
 133 }