Cleanup ContentSuggestions cells

ios/chrome/browser/ui/content_suggestions/content_suggestions_favicon_item_unittest.mm

-// Copyright 2017 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 "ios/chrome/browser/ui/content_suggestions/content_suggestions_favicon_item.h"
-
-#include "base/mac/foundation_util.h"
-#import "ios/chrome/browser/ui/content_suggestions/content_suggestions_favicon_internal_cell.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#import "third_party/ocmock/OCMock/OCMock.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-namespace {
-
-ContentSuggestionsFaviconInternalCell* GetInnerCell(
-    NSInteger cellIndex,
-    ContentSuggestionsFaviconCell* outerCell) {
-  UICollectionViewCell* innerCell = [outerCell.collectionView.dataSource
-              collectionView:outerCell.collectionView
-      cellForItemAtIndexPath:[NSIndexPath indexPathForItem:cellIndex
-                                                 inSection:0]];
-
-  EXPECT_EQ([ContentSuggestionsFaviconInternalCell class], [innerCell class]);
-  return base::mac::ObjCCastStrict<ContentSuggestionsFaviconInternalCell>(
-      innerCell);
-}
-
-#pragma mark - Tests
-
-// Tests that configureCell: set all the fields of the cell.
-TEST(ContentSuggestionsFaviconItemTest, CellIsConfigured) {
-  id delegateMock = [OCMockObject
-      mockForProtocol:@protocol(ContentSuggestionsFaviconCellDelegate)];
-  ContentSuggestionsFaviconItem* item =
-      [[ContentSuggestionsFaviconItem alloc] initWithType:0];
-  item.delegate = delegateMock;
-
-  ContentSuggestionsFaviconCell* cell = [[[item cellClass] alloc] init];
-  ASSERT_EQ([ContentSuggestionsFaviconCell class], [cell class]);
-
-  [item configureCell:cell];
-  EXPECT_EQ(delegateMock, cell.delegate);
-}
-
-// Tests that the favicon added to the item are correctly passed to the inner
-// collection view.
-TEST(ContentSuggestionsFaviconItemTest, AddAFavicon) {
-  ContentSuggestionsFaviconItem* item =
-      [[ContentSuggestionsFaviconItem alloc] initWithType:0];
-  UIImage* image1 = [[UIImage alloc] init];
-  NSString* title1 = @"testTitle1";
-  UIImage* image2 = [[UIImage alloc] init];
-  NSString* title2 = @"testTitle2";
-  [item addFavicon:image1 withTitle:title1];
-  [item addFavicon:image2 withTitle:title2];
-
-  ContentSuggestionsFaviconCell* cell = [[[item cellClass] alloc] init];
-
-  [item configureCell:cell];
-
-  ContentSuggestionsFaviconInternalCell* faviconInternalCell1 =
-      GetInnerCell(0, cell);
-  EXPECT_EQ(image1, faviconInternalCell1.faviconView.image);
-  EXPECT_TRUE([title1 isEqualToString:faviconInternalCell1.titleLabel.text]);
-
-  ContentSuggestionsFaviconInternalCell* faviconInternalCell2 =
-      GetInnerCell(1, cell);
-  EXPECT_EQ(image2, faviconInternalCell2.faviconView.image);
-  EXPECT_TRUE([title2 isEqualToString:faviconInternalCell2.titleLabel.text]);
-}
-
-// Tests that adding nil favicon does nothing.
-TEST(ContentSuggestionsFaviconItemTest, AddNilFavicon) {
-  ContentSuggestionsFaviconItem* item =
-      [[ContentSuggestionsFaviconItem alloc] initWithType:0];
-  UIImage* image = [[UIImage alloc] init];
-  NSString* title = @"testTitle1";
-  UIImage* nilImage = nil;
-  NSString* nilTitle = nil;
-  [item addFavicon:nilImage withTitle:title];
-  [item addFavicon:image withTitle:nilTitle];
-
-  ContentSuggestionsFaviconCell* cell = [[[item cellClass] alloc] init];
-
-  [item configureCell:cell];
-
-  EXPECT_EQ(0,
-            [cell.collectionView.dataSource collectionView:cell.collectionView
-                                    numberOfItemsInSection:0]);
-}
-
-}  // namespace