Use apple-touch-icons for streamlined hosted apps.

chrome/browser/extensions/tab_helper_unittest.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/tab_helper.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+namespace {
+
+SkBitmap CreateSquareBitmapWithColor(int size, SkColor color) {
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, size, size);
+  bitmap.allocPixels();
+  bitmap.eraseColor(color);
+  return bitmap;
+}
+
+void ValidateBitmapSizeAndColor(SkBitmap bitmap, int size, SkColor color) {
+  // Obtain pixel lock to access pixels.
+  SkAutoLockPixels lock(bitmap);
+  EXPECT_EQ(color, bitmap.getColor(0, 0));
+  EXPECT_EQ(size, bitmap.width());
+  EXPECT_EQ(size, bitmap.height());
+}
+
+class TabHelperTest : public testing::Test {
+ protected:
+  TabHelperTest() {
+  }
+
+  virtual ~TabHelperTest() {
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TabHelperTest);
+};
+
+}  // namespace
+
+TEST_F(TabHelperTest, ConstrainBitmapsToSizes) {
+  std::set<int> desired_sizes;
+  desired_sizes.insert(16);
+  desired_sizes.insert(32);
+  desired_sizes.insert(128);
+  desired_sizes.insert(256);
+
+  {
+    std::vector<SkBitmap> bitmaps;
+    bitmaps.push_back(CreateSquareBitmapWithColor(16, SK_ColorRED));
+    bitmaps.push_back(CreateSquareBitmapWithColor(32, SK_ColorGREEN));
+    bitmaps.push_back(CreateSquareBitmapWithColor(48, SK_ColorBLUE));
+    bitmaps.push_back(CreateSquareBitmapWithColor(144, SK_ColorYELLOW));
+
+    std::vector<SkBitmap> results(
+        extensions::TabHelper::ConstrainBitmapsToSizes(bitmaps, desired_sizes));
+
+    EXPECT_EQ(3u, results.size());
+    ValidateBitmapSizeAndColor(results[0], 16, SK_ColorRED);
+    ValidateBitmapSizeAndColor(results[1], 32, SK_ColorGREEN);
+    ValidateBitmapSizeAndColor(results[2], 128, SK_ColorYELLOW);
+  }
+  {
+    std::vector<SkBitmap> bitmaps;
+    bitmaps.push_back(CreateSquareBitmapWithColor(512, SK_ColorRED));
+    bitmaps.push_back(CreateSquareBitmapWithColor(18, SK_ColorGREEN));
+    bitmaps.push_back(CreateSquareBitmapWithColor(33, SK_ColorBLUE));
+    bitmaps.push_back(CreateSquareBitmapWithColor(17, SK_ColorYELLOW));
+
+    std::vector<SkBitmap> results(
+        extensions::TabHelper::ConstrainBitmapsToSizes(bitmaps, desired_sizes));
+
+    EXPECT_EQ(3u, results.size());
+    ValidateBitmapSizeAndColor(results[0], 16, SK_ColorYELLOW);
+    ValidateBitmapSizeAndColor(results[1], 32, SK_ColorBLUE);
+    ValidateBitmapSizeAndColor(results[2], 256, SK_ColorRED);
+  }
+}