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diff --git a/tests/CoreTests/android/core/InstanceofTest.java b/tests/CoreTests/android/core/InstanceofTest.java
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+++ b/tests/CoreTests/android/core/InstanceofTest.java
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+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.core;
+
+import junit.framework.TestCase;
+import android.test.suitebuilder.annotation.MediumTest;
+
+
+public class InstanceofTest extends TestCase {
+
+    protected A mA;
+    protected ChildOfAOne mOne;
+    protected ChildOfAOne mTwo;
+    protected ChildOfAOne mThree;
+    protected ChildOfAOne mFour;
+    protected ChildOfAFive mFive;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        mA = new A();
+        mOne = new ChildOfAOne();
+        mTwo = new ChildOfATwo();
+        mThree = new ChildOfAThree();
+        mFour = new ChildOfAFour();
+        mFive = new ChildOfAFive();
+    }
+
+
+    @MediumTest
+    public void testNoInterface() throws Exception {
+        A a = mA;
+        for (int i = 0; i < 100000; i++) {
+            assertFalse("m_a should not be a ChildOfAFive", a instanceof ChildOfAFive);
+        }
+    }
+
+    @MediumTest
+    public void testDerivedOne() throws Exception {
+        InterfaceOne one = mOne;
+        for (int i = 0; i < 100000; i++) {
+            assertFalse("m_one should not be a ChildOfAFive", one instanceof ChildOfAFive);
+        }
+    }
+
+    @MediumTest
+    public void testDerivedTwo() throws Exception {
+        InterfaceTwo two = mTwo;
+        for (int i = 0; i < 100000; i++) {
+            assertFalse("m_two should not be a ChildOfAFive", two instanceof ChildOfAFive);
+        }
+    }
+
+    @MediumTest
+    public void testDerivedThree() throws Exception {
+        InterfaceThree three = mThree;
+        for (int i = 0; i < 100000; i++) {
+            assertFalse("m_three should not be a ChildOfAFive", three instanceof ChildOfAFive);
+        }
+    }
+
+    @MediumTest
+    public void testDerivedFour() throws Exception {
+        InterfaceFour four = mFour;
+        for (int i = 0; i < 100000; i++) {
+            assertFalse("m_four should not be a ChildOfAFive", four instanceof ChildOfAFive);
+        }
+    }
+
+    @MediumTest
+    public void testSuccessClass() throws Exception {
+        ChildOfAOne five = mFive;
+        for (int i = 0; i < 100000; i++) {
+            assertTrue("m_five is suppose to be a ChildOfAFive", five instanceof ChildOfAFive);
+        }
+    }
+
+    @MediumTest
+    public void testSuccessInterface() throws Exception {
+        ChildOfAFive five = mFive;
+        for (int i = 0; i < 100000; i++) {
+            assertTrue("m_five is suppose to be a InterfaceFour", five instanceof InterfaceFour);
+        }
+    }
+
+    @MediumTest
+    public void testFailInterface() throws Exception {
+        InterfaceOne one = mFive;
+        for (int i = 0; i < 100000; i++) {
+            assertFalse("m_five does not implement InterfaceFive", one instanceof InterfaceFive);
+        }
+    }
+
+    private interface InterfaceOne {
+    }
+
+    private interface InterfaceTwo {
+    }
+
+    private interface InterfaceThree {
+    }
+
+    private interface InterfaceFour {
+    }
+
+    private interface InterfaceFive {
+    }
+
+    private static class A {
+    }
+
+    private static class ChildOfAOne extends A implements InterfaceOne, InterfaceTwo, InterfaceThree, InterfaceFour {
+    }
+
+    private static class ChildOfATwo extends ChildOfAOne {
+    }
+
+    private static class ChildOfAThree extends ChildOfATwo {
+    }
+
+    private static class ChildOfAFour extends ChildOfAThree {
+    }
+
+    private static class ChildOfAFive extends ChildOfAFour {
+    }
+}