[Mac] Update the Text Color for the Avatar Button

chrome/browser/ui/cocoa/profiles/avatar_button_controller_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 "chrome/browser/ui/cocoa/profiles/avatar_button_controller.h"
 
 #include "base/command_line.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 #include "chrome/browser/ui/cocoa/info_bubble_window.h"
 #import "chrome/browser/ui/cocoa/profiles/profile_chooser_controller.h"
 #include "chrome/browser/ui/cocoa/test/cocoa_profile_test.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/grit/theme_resources.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #import "testing/gtest_mac.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/resource/resource_bundle.h"
 
 // Defined in the AvatarButtonController implementation.
 @interface AvatarButtonController (ExposedForTesting)
 - (void)setErrorStatus:(BOOL)hasError;
+- (void)updateAvatarButtonAndLayoutParent:(BOOL)layoutParent;
+@end
+
+// Mocks the AvatarButtonController class so that we can mock its browser
+// window's frame color.
+@interface MockAvatarButtonController : AvatarButtonController {
+  // True if the frame color is dark.
+  BOOL isFrameDark_;
+}
+
+- (void)setIsFrameDark:(BOOL)isDark;
+
+@end
+
+@implementation MockAvatarButtonController
+
+- (void)setIsFrameDark:(BOOL)isDark {
+  isFrameDark_ = isDark;
+}
+
+- (BOOL)isFrameColorDark {
+  return isFrameDark_;
+}
+
 @end
 
 class AvatarButtonControllerTest : public CocoaProfileTest {
  public:
   void SetUp() override {
     DCHECK(profiles::IsMultipleProfilesEnabled());
 
     CocoaProfileTest::SetUp();
     ASSERT_TRUE(browser());
 
-    controller_.reset(
-        [[AvatarButtonController alloc] initWithBrowser:browser()]);
+    controller_.reset([[MockAvatarButtonController alloc]
+        initWithBrowser:browser()
+                 window:nil]);
   }
 
   void TearDown() override {
     browser()->window()->Close();
     CocoaProfileTest::TearDown();
   }
 
   NSButton* button() { return [controller_ buttonView]; }
 
   NSView* view() { return [controller_ view]; }
 
-  AvatarButtonController* controller() { return controller_.get(); }
+  MockAvatarButtonController* controller() { return controller_.get(); }
 
  private:
-  base::scoped_nsobject<AvatarButtonController> controller_;
+  base::scoped_nsobject<MockAvatarButtonController> controller_;
 };
 
 TEST_F(AvatarButtonControllerTest, GenericButtonShown) {
   ASSERT_FALSE([view() isHidden]);
   // There is only one local profile, which means displaying the generic
   // avatar button.
   EXPECT_NSEQ(@"", [button() title]);
 }
 
 TEST_F(AvatarButtonControllerTest, ProfileButtonShown) {
@@ skipping 30 matching lines @@
 
   [button() performClick:button()];
   EXPECT_EQ(menu, [controller() menuController]);
 
   // Do not animate out because that is hard to test around.
   static_cast<InfoBubbleWindow*>(menu.window).allowedAnimations =
       info_bubble::kAnimateNone;
   [menu close];
   EXPECT_FALSE([controller() menuController]);
 }
+
+TEST_F(AvatarButtonControllerTest, TitleColor) {
+  // Create a second profile, to force the button to display the profile name.
+  testing_profile_manager()->CreateTestingProfile("batman");
+
+  // Set the frame color to be not dark. The button's title color should be
+  // black.
+  [controller() setIsFrameDark:NO];
+  [controller() updateAvatarButtonAndLayoutParent:NO];
+  NSColor* titleColor =
+      [[button() attributedTitle] attribute:NSForegroundColorAttributeName
+                                    atIndex:0
+                             effectiveRange:nil];
+  DCHECK_EQ(titleColor, [NSColor blackColor]);
+
+  // Set the frame color to be dark. The button's title color should be white.
+  [controller() setIsFrameDark:YES];
+  [controller() updateAvatarButtonAndLayoutParent:NO];
+  titleColor =
+      [[button() attributedTitle] attribute:NSForegroundColorAttributeName
+                                    atIndex:0
+                             effectiveRange:nil];
+  DCHECK_EQ(titleColor, [NSColor whiteColor]);
+}