Stop SpriteView animation when window is miniaturized.

chrome/browser/ui/cocoa/sprite_view_unittest.mm

 // Copyright 2014 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>
 
 #include "base/mac/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/sprite_view.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
 #include "ui/resources/grit/ui_resources.h"
 
+@interface SpriteView (ExposedForTesting)
+
+- (BOOL)isAnimating;
+
+@end
+
+@implementation SpriteView (ExposedForTesting)
+
+- (BOOL)isAnimating {
+  return [imageLayer_ animationForKey:[spriteAnimation_ keyPath]] != nil;
+}
+
+@end
+
 namespace {
 
 class SpriteViewTest : public CocoaTest {
  public:
   SpriteViewTest() {
     image_.reset(ResourceBundle::GetSharedInstance()
                      .GetNativeImageNamed(IDR_THROBBER)
                      .CopyNSImage());
     view_.reset([[SpriteView alloc] init]);
     [view_ setImage:image_];
     [[test_window() contentView] addSubview:view_];
   }
 
   base::scoped_nsobject<NSImage> image_;
   base::scoped_nsobject<SpriteView> view_;
 };
 
 TEST_VIEW(SpriteViewTest, view_)
 
 TEST_F(SpriteViewTest, TestViewFrame) {
   NSSize imageSize = [image_ size];
   NSRect frame = [view_ frame];
   EXPECT_EQ(0.0, frame.origin.x);
   EXPECT_EQ(0.0, frame.origin.y);
   EXPECT_EQ(imageSize.height, NSWidth(frame));
   EXPECT_EQ(imageSize.height, NSHeight(frame));
 }
 
+TEST_F(SpriteViewTest, StopAnimationOnMiniaturize) {
+  EXPECT_TRUE([view_ isAnimating]);
+
+  [test_window() miniaturize:nil];
+  EXPECT_FALSE([view_ isAnimating]);
+
+  [test_window() deminiaturize:nil];
+  EXPECT_TRUE([view_ isAnimating]);
+}
+
+TEST_F(SpriteViewTest,
+       StopAnimationOnRemoveFromSuperview) {
+  EXPECT_TRUE([view_ isAnimating]);
+
+  [view_ removeFromSuperview];
+  EXPECT_FALSE([view_ isAnimating]);
+
+  [[test_window() contentView] addSubview:view_];
+  EXPECT_TRUE([view_ isAnimating]);
+}
+
 }  // namespace