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chrome/browser/cocoa/cocoa_utils_unittest.mm

-// Copyright (c) 2009 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.
-
-#import "chrome/browser/cocoa/cocoa_utils.h"
-#import "chrome/browser/cocoa/cocoa_test_helper.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-class CocoaUtilsTest : public testing::Test {
- public:
-  CocoaTestHelper cocoa_helper_;  // Inits Cocoa, creates window, etc...
-
-  // If not red, is blue.
-  // If not tfbit (twenty-four-bit), is 444.
-  void ShapeHelper(int width, int height, bool isred, bool tfbit);
-};
-
-void CocoaUtilsTest::ShapeHelper(int width, int height,
-                                 bool isred, bool tfbit) {
-  SkBitmap thing;
-
-  if (tfbit)
-    thing.setConfig(SkBitmap::kARGB_8888_Config, width, height);
-  else
-    thing.setConfig(SkBitmap::kARGB_4444_Config, width, height);
-  thing.allocPixels();
-
-  if (isred)
-    thing.eraseRGB(0xff, 0, 0);
-  else
-    thing.eraseRGB(0, 0, 0xff);
-
-  // Confirm size
-  NSImage* image = CocoaUtils::SkBitmapToNSImage(thing);
-  EXPECT_DOUBLE_EQ([image size].width, (double)width);
-  EXPECT_DOUBLE_EQ([image size].height, (double)height);
-
-  // Get the color of a pixel and make sure it looks fine
-  [image lockFocus];
-
-  int x = width > 17 ? 17 : 0;
-  int y = height > 17 ? 17 : 0;
-  NSColor* color = NSReadPixel(NSMakePoint(x, y));
-  CGFloat red = 0, green = 0, blue = 0, alpha = 0;
-  [image unlockFocus];
-  [color getRed:&red green:&green blue:&blue alpha:&alpha];
-
-  // Be tolerant of floating point rounding, gamma, etc.
-  if (isred) {
-    EXPECT_GT(red, 0.8);
-    EXPECT_LT(blue, 0.2);
-  } else {
-    EXPECT_LT(red, 0.2);
-    EXPECT_GT(blue, 0.8);
-  }
-  EXPECT_LT(green, 0.2);
-  EXPECT_GT(alpha, 0.9);
-}
-
-
-TEST_F(CocoaUtilsTest, BitmapToNSImage_RedSquare64x64) {
-  ShapeHelper(64, 64, true, true);
-}
-
-TEST_F(CocoaUtilsTest, BitmapToNSImage_BlueRectangle199x19) {
-  ShapeHelper(199, 19, false, true);
-}
-
-TEST_F(CocoaUtilsTest, BitmapToNSImage_BlueRectangle444) {
-  ShapeHelper(200, 200, false, false);
-}
-
-
-}  // namespace