Suggestions UI - expandable item

ios/chrome/browser/ui/suggestions/suggestions_expandable_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/suggestions/suggestions_expandable_item.h"
+
+#import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+#include "third_party/ocmock/gtest_support.h"
+
+// Test subclass of the SuggestionsExpandableCell.
+@interface TestSuggestionsExpandableCell : SuggestionsExpandableCell
+
+@property(nonatomic) BOOL expandCalled;
+@property(nonatomic) BOOL collapseCalled;
+
+@end
+
+@implementation TestSuggestionsExpandableCell
+
+@synthesize expandCalled;
+@synthesize collapseCalled;
+
+- (void)expand {
+  [super expand];
+  self.expandCalled = YES;
+}
+
+- (void)collapse {
+  [super collapse];
+  self.collapseCalled = YES;
+}
+
+@end
+
+namespace {
+
+// Tests that configureCell: set all the fields of the cell.
+TEST(SuggestionsExpandableItemTest, CellIsConfigured) {
+  NSString* title = @"testTitle";
+  NSString* subtitle = @"testSubtitle";
+  UIImage* image = [[UIImage alloc] init];
+  NSString* details = @"testDetails";
+  id mockDelegate = [OCMockObject
+      mockForProtocol:@protocol(SuggestionsExpandableCellDelegate)];
+
+  SuggestionsExpandableItem* item =
+      [[SuggestionsExpandableItem alloc] initWithType:0
+                                                title:title
+                                             subtitle:subtitle
+                                                image:image
+                                           detailText:details];
+  item.delegate = mockDelegate;
+  SuggestionsExpandableCell* cell = [[[item cellClass] alloc] init];
+  EXPECT_TRUE([cell isMemberOfClass:[SuggestionsExpandableCell class]]);
+
+  [item configureCell:cell];
+  EXPECT_EQ(title, cell.titleLabel.text);
+  EXPECT_EQ(subtitle, cell.subtitleLabel.text);
+  EXPECT_EQ(image, cell.imageView.image);
+  EXPECT_EQ(details, cell.detailLabel.text);
+  EXPECT_EQ(mockDelegate, cell.delegate);
+}
+
+// Tests that if the expanded property of the item is YES, the |expand| method
+// of the cell is called during configuration.
+TEST(SuggestionsExpandableItemTest, CellIsExpanded) {
+  SuggestionsExpandableItem* item =
+      [[SuggestionsExpandableItem alloc] initWithType:0
+                                                title:@"title"
+                                             subtitle:@"subtitle"
+                                                image:nil
+                                           detailText:@"detail"];
+  TestSuggestionsExpandableCell* cell =
+      [[TestSuggestionsExpandableCell alloc] init];
+  item.cellClass = [TestSuggestionsExpandableCell class];
+
+  item.expanded = YES;
+  [item configureCell:cell];
+  ASSERT_TRUE(cell.expandCalled);
+  ASSERT_FALSE(cell.collapseCalled);
+}
+
+// Tests that if the expanded property of the item is NO, the |collapse| method
+// of the cell is called during configuration.
+TEST(SuggestionsExpandableItemTest, CellIsCollapsed) {
+  SuggestionsExpandableItem* item =
+      [[SuggestionsExpandableItem alloc] initWithType:0
+                                                title:@"title"
+                                             subtitle:@"subtitle"
+                                                image:nil
+                                           detailText:@"detail"];
+  TestSuggestionsExpandableCell* cell =
+      [[TestSuggestionsExpandableCell alloc] init];
+  item.cellClass = [TestSuggestionsExpandableCell class];
+
+  item.expanded = NO;
+  [item configureCell:cell];
+  ASSERT_TRUE(cell.collapseCalled);
+  ASSERT_FALSE(cell.expandCalled);
+}
+
+}  // namespace