Add a Material Design Circular Activity Indicator (Spinner) view for Mac.

chrome/browser/ui/cocoa/circular_activity_indicator_view_unittest.mm

+// Copyright (c) 2015 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/ui/cocoa/circular_activity_indicator_view.h"
+
+#import "ui/gfx/test/ui_cocoa_test_helper.h"
+
+@interface TestCircularActivityIndicatorView : CircularActivityIndicatorView

[groby-ooo-7-16, 2015/03/31 23:07:01]

nit: common pattern is to just make it an (ExposedForTesting) category.

[shrike, 2015/04/01 15:30:46]

Done.

+
+- (BOOL)is_animating;
+
+@end
+
+@implementation TestCircularActivityIndicatorView
+
+- (BOOL)is_animating
+{
+  return is_animating_;
+}
+
+@end
+
+namespace {
+
+  class CircularActivityIndicatorViewTest : public ui::CocoaTest {
+  public:
+    CircularActivityIndicatorViewTest() {
+      CGRect frame = NSMakeRect(0.0, 0.0, 16.0, 16.0);
+      view_.reset([[TestCircularActivityIndicatorView alloc]
+                      initWithFrame:frame]);
+      [[test_window() contentView] addSubview:view_];
+    }
+
+    base::scoped_nsobject<TestCircularActivityIndicatorView> view_;
+  };
+
+  TEST_VIEW(CircularActivityIndicatorViewTest, view_)
+
+  TEST_F(CircularActivityIndicatorViewTest, StopAnimationOnMiniaturize) {
+    EXPECT_TRUE([view_ is_animating]);
+
+    [test_window() miniaturize:nil];
+    EXPECT_FALSE([view_ is_animating]);
+
+    [test_window() deminiaturize:nil];
+    EXPECT_TRUE([view_ is_animating]);
+  }
+
+  TEST_F(CircularActivityIndicatorViewTest,
+         StopAnimationOnRemoveFromSuperview) {
+    EXPECT_TRUE([view_ is_animating]);
+
+    [view_ removeFromSuperview];
+    EXPECT_FALSE([view_ is_animating]);
+
+    [[test_window() contentView] addSubview:view_];
+    EXPECT_TRUE([view_ is_animating]);
+  }
+
+  TEST_F(CircularActivityIndicatorViewTest, StopAnimationOnHidden) {
+    EXPECT_TRUE([view_ is_animating]);
+
+    [view_ setHidden:YES];
+    EXPECT_FALSE([view_ is_animating]);
+
+    [view_ setHidden:NO];
+    EXPECT_TRUE([view_ is_animating]);
+  }
+}
+