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