--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/utilities/ExactClassValueProfileTest.java	Wed Sep 03 14:58:53 2014 +0200
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2014, 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 com.oracle.truffle.api.test.utilities;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.junit.*;
+import org.junit.experimental.theories.*;
+import org.junit.runner.*;
+
+import com.oracle.truffle.api.utilities.*;
+
+@RunWith(Theories.class)
+public class ExactClassValueProfileTest {
+
+    @DataPoint public static final String O1 = new String();
+    @DataPoint public static final String O2 = new String();
+    @DataPoint public static final Object O3 = new Object();
+    @DataPoint public static final Integer O4 = new Integer(1);
+    @DataPoint public static final Integer O5 = null;
+
+    private ExactClassValueProfile profile;
+
+    @Before
+    public void create() {
+        profile = (ExactClassValueProfile) ValueProfile.createClassProfile();
+    }
+
+    @Test
+    public void testInitial() {
+        assertThat(profile.isGeneric(), is(false));
+        assertThat(profile.isUninitialized(), is(true));
+        assertNull(profile.getCachedClass());
+        profile.toString(); // test that it is not crashing
+    }
+
+    @Theory
+    public void testProfileOne(Object value) {
+        Object result = profile.profile(value);
+
+        assertThat(result, is(value));
+        assertEquals(profile.getCachedClass(), expectedClass(value));
+        assertThat(profile.isUninitialized(), is(false));
+        profile.toString(); // test that it is not crashing
+    }
+
+    @Theory
+    public void testProfileTwo(Object value0, Object value1) {
+        Object result0 = profile.profile(value0);
+        Object result1 = profile.profile(value1);
+
+        assertThat(result0, is(value0));
+        assertThat(result1, is(value1));
+
+        Object expectedClass = expectedClass(value0) == expectedClass(value1) ? expectedClass(value0) : Object.class;
+
+        assertEquals(profile.getCachedClass(), expectedClass);
+        assertThat(profile.isUninitialized(), is(false));
+        assertThat(profile.isGeneric(), is(expectedClass == Object.class));
+        profile.toString(); // test that it is not crashing
+    }
+
+    @Theory
+    public void testProfileThree(Object value0, Object value1, Object value2) {
+        Object result0 = profile.profile(value0);
+        Object result1 = profile.profile(value1);
+        Object result2 = profile.profile(value2);
+
+        assertThat(result0, is(value0));
+        assertThat(result1, is(value1));
+        assertThat(result2, is(value2));
+
+        Object expectedClass = expectedClass(value0) == expectedClass(value1) && expectedClass(value1) == expectedClass(value2) ? expectedClass(value0) : Object.class;
+
+        assertEquals(profile.getCachedClass(), expectedClass);
+        assertThat(profile.isUninitialized(), is(false));
+        assertThat(profile.isGeneric(), is(expectedClass == Object.class));
+        profile.toString(); // test that it is not crashing
+    }
+
+    private static Class<?> expectedClass(Object value) {
+        return value == null ? Object.class : value.getClass();
+    }
+
+}