Add tests against pressing tab when a view controller is presented

ios/chrome/browser/ui/bookmarks/bookmarks_egtest.mm

 // Copyright 2016 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 <vector>
 
 #import <EarlGrey/EarlGrey.h>
 #import <UIKit/UIKit.h>
 #import <XCTest/XCTest.h>
 
@@ skipping 111 matching lines @@
   }
 
   return grey_allOf(grey_accessibilityLabel(
                         l10n_util::GetNSString(accessibilityLabelMessageID)),
                     grey_accessibilityTrait(UIAccessibilityTraitButton),
                     grey_not(grey_accessibilityID(@"Edit_editing_bar")), nil);
 }
 
 }  // namespace
 
+// Expose the first responder.
+@interface UIWindow (FirstResponder)
+- (UIResponder*)firstResponder;
+@end
+
 // Bookmark integration tests for Chrome.
 @interface BookmarksTestCase : ChromeTestCase
 @end
 
 @implementation BookmarksTestCase
 
 - (void)setUp {
   [super setUp];
   // Wait for bookmark model to be loaded.
   GREYAssert(testing::WaitUntilConditionOrTimeout(
@@ skipping 1116 matching lines @@
 
   // Tap the Select action.
   [[EarlGrey selectElementWithMatcher:ActionSheet(ActionSelect)]
       performAction:grey_tap()];
   chrome_test_util::VerifyAccessibilityForCurrentScreen();
   // Dismiss selector with Cancel button.
   [[EarlGrey selectElementWithMatcher:grey_accessibilityID(@"Exit Edit Mode")]
       performAction:grey_tap()];
 }
 
+// Tests that hitting the tab key doesn't trigger the omnibox in the background.
+// Testing against regressions of the fix for crbug.com/676993.
+- (void)testTabKeyIsANoOpWhenEditing {
+  const GURL bookmarkURL = web::test::HttpServer::MakeUrl(
+      "http://ios/testing/data/http_server_files/destination.html");
+  NSString* bookmarkTitle = @"Some Bookmark";
+
+  // Load a bookmark into the bookmark model.
+  [BookmarksTestCase addBookmark:bookmarkURL withTitle:bookmarkTitle];
+
+  // Open the bookmark editor.
+  NSString* const kStarLitLabel =
+      !IsCompact() ? l10n_util::GetNSString(IDS_TOOLTIP_STAR)
+                   : l10n_util::GetNSString(IDS_IOS_BOOKMARK_EDIT_SCREEN_TITLE);
+  if (IsCompact()) {
+    [ChromeEarlGreyUI openToolsMenu];
+  }
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(kStarLitLabel)]
+      performAction:grey_tap()];
+
+  // Hit the tab key.
+  // TODO(crbug.com/695876): Simulate a tab key press with EalrGrey.
+
+  // Verify that the omnibox is not focused.
+  GREYAssertFalse([[[[UIApplication sharedApplication] keyWindow]
+      firstResponder] isKindOfClass:[UITextField class]]);
+}
+
+// Tests that hitting the tab key doesn't trigger the omnibox in the background.
+// Testing against regressions of the fix for crbug.com/676993.
+- (void)testTabKeyIsANoOpWhenSignInPromoIsOpen {
+  TODO
+}
+
 #pragma mark Helper Methods
 
 // Navigates to the bookmark manager UI.
 + (void)openBookmarks {
   [ChromeEarlGreyUI openToolsMenu];
 
   // Opens the bookmark manager.
   [[EarlGrey
       selectElementWithMatcher:grey_accessibilityID(kToolsMenuBookmarksId)]
       performAction:grey_tap()];
@@ skipping 411 matching lines @@
   if (!IsCompact()) {
     [[EarlGrey selectElementWithMatcher:StarButton()] performAction:grey_tap()];
   } else {
     [ChromeEarlGreyUI openToolsMenu];
     [[EarlGrey selectElementWithMatcher:AddBookmarkButton()]
         performAction:grey_tap()];
   }
 }
 
 @end