[Mac] Display a quick animation when a popup is blocked so the user notices it in the Omnibox.

chrome/browser/cocoa/animatable_image_unittest.mm

+// Copyright (c) 2010 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 <Cocoa/Cocoa.h>
+
+#import "base/nsimage_cache_mac.h"
+#import "chrome/browser/cocoa/animatable_image.h"
+#import "chrome/browser/cocoa/cocoa_test_helper.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+namespace {
+
+class AnimatableImageTest : public CocoaTest {
+ public:
+  AnimatableImageTest() {
+    NSRect frame = NSMakeRect(0, 0, 500, 500);
+    NSImage* image = nsimage_cache::ImageNamed(@"forward_Template.pdf");
+    animation_ = [[AnimatableImage alloc] initWithImage:image
+                                         animationFrame:frame];
+  }
+
+  AnimatableImage* animation_;
+};
+
+TEST_F(AnimatableImageTest, BasicAnimation) {
+  [animation_ setStartFrame:CGRectMake(0, 0, 10, 10)];
+  [animation_ setEndFrame:CGRectMake(500, 500, 100, 100)];
+  [animation_ setStartOpacity:0.1];
+  [animation_ setEndOpacity:1.0];
+  [animation_ setDuration:0.5];
+  [animation_ startAnimation];
+}
+
+}  // namespace