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diff --git a/tests/unit/src/com/android/tv/util/images/ImageCacheTest.java b/tests/unit/src/com/android/tv/util/images/ImageCacheTest.java
new file mode 100644
index 00000000..b7715c4a
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+++ b/tests/unit/src/com/android/tv/util/images/ImageCacheTest.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2015 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 com.android.tv.util.images;
+
+import static com.android.tv.util.images.BitmapUtils.createScaledBitmapInfo;
+import static com.google.common.truth.Truth.assertWithMessage;
+
+import android.graphics.Bitmap;
+import android.support.test.filters.MediumTest;
+import android.support.test.runner.AndroidJUnit4;
+import com.android.tv.util.images.BitmapUtils.ScaledBitmapInfo;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Tests for {@link ImageCache}. */
+@MediumTest
+@RunWith(AndroidJUnit4.class)
+public class ImageCacheTest {
+    private static final Bitmap ORIG = Bitmap.createBitmap(100, 100, Bitmap.Config.RGB_565);
+
+    private static final String KEY = "same";
+    private static final ScaledBitmapInfo INFO_200 = createScaledBitmapInfo(KEY, ORIG, 200, 200);
+    private static final ScaledBitmapInfo INFO_100 = createScaledBitmapInfo(KEY, ORIG, 100, 100);
+    private static final ScaledBitmapInfo INFO_50 = createScaledBitmapInfo(KEY, ORIG, 50, 50);
+    private static final ScaledBitmapInfo INFO_25 = createScaledBitmapInfo(KEY, ORIG, 25, 25);
+
+    private ImageCache mImageCache;
+
+    @Before
+    public void setUp() throws Exception {
+        mImageCache = ImageCache.newInstance(0.1f);
+    }
+
+    // TODO: Empty the cache in the setup.  Try using @VisibleForTesting
+
+    @Test
+    public void testPutIfLarger_smaller() throws Exception {
+
+        mImageCache.putIfNeeded(INFO_50);
+    assertWithMessage("before").that(mImageCache.get(KEY)).isSameAs(INFO_50);
+
+        mImageCache.putIfNeeded(INFO_25);
+    assertWithMessage("after").that(mImageCache.get(KEY)).isSameAs(INFO_50);
+    }
+
+    @Test
+    public void testPutIfLarger_larger() throws Exception {
+        mImageCache.putIfNeeded(INFO_50);
+    assertWithMessage("before").that(mImageCache.get(KEY)).isSameAs(INFO_50);
+
+        mImageCache.putIfNeeded(INFO_100);
+    assertWithMessage("after").that(mImageCache.get(KEY)).isSameAs(INFO_100);
+    }
+
+    @Test
+    public void testPutIfLarger_alreadyMax() throws Exception {
+
+        mImageCache.putIfNeeded(INFO_100);
+    assertWithMessage("before").that(mImageCache.get(KEY)).isSameAs(INFO_100);
+
+        mImageCache.putIfNeeded(INFO_200);
+    assertWithMessage("after").that(mImageCache.get(KEY)).isSameAs(INFO_100);
+    }
+}