1 files changed, 79 insertions, 0 deletions
diff --git a/tests/unit/src/com/android/tv/util/images/ScaledBitmapInfoTest.java b/tests/unit/src/com/android/tv/util/images/ScaledBitmapInfoTest.java
new file mode 100644
index 00000000..005775b6
--- /dev/null
+++ b/tests/unit/src/com/android/tv/util/images/ScaledBitmapInfoTest.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2017 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.google.common.truth.Truth.assertWithMessage;
+
+import android.graphics.Bitmap;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+import com.android.tv.util.images.BitmapUtils.ScaledBitmapInfo;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Tests for {@link ScaledBitmapInfo}. */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class ScaledBitmapInfoTest {
+    private static final Bitmap B80x100 = Bitmap.createBitmap(80, 100, Bitmap.Config.RGB_565);
+    private static final Bitmap B960x1440 = Bitmap.createBitmap(960, 1440, Bitmap.Config.RGB_565);
+
+    @Test
+    public void testSize_B100x100to50x50() {
+        ScaledBitmapInfo actual = BitmapUtils.createScaledBitmapInfo("B80x100", B80x100, 50, 50);
+        assertScaledBitmapSize(2, 40, 50, actual);
+    }
+
+    @Test
+    public void testNeedsToReload_B100x100to50x50() {
+        ScaledBitmapInfo actual = BitmapUtils.createScaledBitmapInfo("B80x100", B80x100, 50, 50);
+        assertNeedsToReload(false, actual, 25, 25);
+        assertNeedsToReload(false, actual, 50, 50);
+        assertNeedsToReload(false, actual, 99, 99);
+        assertNeedsToReload(true, actual, 100, 100);
+        assertNeedsToReload(true, actual, 101, 101);
+    }
+
+    /** Reproduces <a href="http://b/20488453">b/20488453</a>. */
+    @Test
+    public void testBug20488453() {
+        ScaledBitmapInfo actual =
+                BitmapUtils.createScaledBitmapInfo("B960x1440", B960x1440, 284, 160);
+        assertScaledBitmapSize(8, 107, 160, actual);
+        assertNeedsToReload(false, actual, 284, 160);
+    }
+
+    private static void assertNeedsToReload(
+            boolean expected, ScaledBitmapInfo scaledBitmap, int reqWidth, int reqHeight) {
+    assertWithMessage(scaledBitmap.id + " needToReload(" + reqWidth + "," + reqHeight + ")")
+        .that(scaledBitmap.needToReload(reqWidth, reqHeight))
+        .isEqualTo(expected);
+    }
+
+    private static void assertScaledBitmapSize(
+            int expectedInSampleSize,
+            int expectedWidth,
+            int expectedHeight,
+            ScaledBitmapInfo actual) {
+    assertWithMessage(actual.id + " inSampleSize")
+        .that(actual.inSampleSize)
+        .isEqualTo(expectedInSampleSize);
+    assertWithMessage(actual.id + " width").that(actual.bitmap.getWidth()).isEqualTo(expectedWidth);
+    assertWithMessage(actual.id + " height")
+        .that(actual.bitmap.getHeight())
+        .isEqualTo(expectedHeight);
+    }
+}