1 /*
   2  * Copyright (c) 2012, 2016, 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 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 -Djvmci.Compiler=null 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
  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
  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
 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
 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 }
--- EOF ---