--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestConstantReflectionProvider.java	Thu Oct 08 17:28:41 2015 -0700
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.vm.ci.runtime.test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.lang.reflect.Array;
+import java.util.List;
+
+import jdk.vm.ci.meta.ConstantReflectionProvider;
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaKind;
+
+import org.junit.Test;
+
+/**
+ * Tests for {@link ConstantReflectionProvider}. It assumes an implementation of the interface that
+ * actually returns non-null results for access operations that are possible, i.e., the tests will
+ * fail for an implementation that spuriously returns null (which is allowed by the specification).
+ */
+public class TestConstantReflectionProvider extends TypeUniverse {
+
+    @Test
+    public void constantEqualsTest() {
+        for (ConstantValue c1 : constants()) {
+            for (ConstantValue c2 : constants()) {
+                // test symmetry
+                assertEquals(constantReflection.constantEquals(c1.value, c2.value), constantReflection.constantEquals(c2.value, c1.value));
+                if (c1.value.getJavaKind() != JavaKind.Object && c2.value.getJavaKind() != JavaKind.Object) {
+                    assertEquals(c1.value.equals(c2.value), constantReflection.constantEquals(c2.value, c1.value));
+                }
+            }
+        }
+    }
+
+    @Test
+    public void readArrayLengthTest() {
+        for (ConstantValue cv : constants()) {
+            JavaConstant c = cv.value;
+            Integer actual = constantReflection.readArrayLength(c);
+            if (c.getJavaKind() != JavaKind.Object || c.isNull() || !cv.boxed.getClass().isArray()) {
+                assertNull(actual);
+            } else {
+                assertNotNull(actual);
+                int actualInt = actual;
+                assertEquals(Array.getLength(cv.boxed), actualInt);
+            }
+        }
+    }
+
+    static class PrimitiveConstants {
+        static final long LONG_CONST = 42;
+        static final int INT_CONST = 66;
+        static final byte BYTE_CONST = 123;
+        static final boolean BOOL_CONST = true;
+    }
+
+    static class BoxedConstants {
+        static final Long LONG_CONST = 42L;
+        static final Integer INT_CONST = 66;
+        static final Byte BYTE_CONST = 123;
+        static final Boolean BOOL_CONST = true;
+    }
+
+    @Test
+    public void boxTest() {
+        for (ConstantValue cv : constants()) {
+            JavaConstant c = cv.value;
+            JavaConstant boxed = constantReflection.boxPrimitive(c);
+            if (boxed != null && c.getJavaKind().isPrimitive()) {
+                assertTrue(boxed.getJavaKind().isObject());
+                assertFalse(boxed.isNull());
+            }
+        }
+
+        List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
+        List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
+        for (int i = 0; i < primitiveConstants.size(); i++) {
+            ConstantValue prim = primitiveConstants.get(i);
+            ConstantValue box = boxedConstants.get(i);
+            assertEquals(box.value, constantReflection.boxPrimitive(prim.value));
+        }
+
+        assertNull(constantReflection.boxPrimitive(JavaConstant.NULL_POINTER));
+    }
+
+    @Test
+    public void unboxTest() {
+        for (ConstantValue cv : constants()) {
+            JavaConstant c = cv.value;
+            JavaConstant unboxed = c.isNull() ? null : constantReflection.unboxPrimitive(c);
+            if (unboxed != null) {
+                assertFalse(unboxed.getJavaKind().isObject());
+            }
+        }
+        List<ConstantValue> primitiveConstants = readConstants(PrimitiveConstants.class);
+        List<ConstantValue> boxedConstants = readConstants(BoxedConstants.class);
+        for (int i = 0; i < primitiveConstants.size(); i++) {
+            ConstantValue prim = primitiveConstants.get(i);
+            ConstantValue box = boxedConstants.get(i);
+            assert prim.getSimpleName().equals(box.getSimpleName());
+            assertEquals(prim.value, constantReflection.unboxPrimitive(box.value));
+        }
+
+        assertNull(constantReflection.unboxPrimitive(JavaConstant.NULL_POINTER));
+    }
+}