components/CollectionCells/tests/unit/CollectionCellsIssue1257Tests.m

/*
 Copyright 2017-present the Material Components for iOS authors. All Rights Reserved.

 Licensed under the Apache License Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing software
 distributed under the License is distributed on an "AS IS" BASIS
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

#import <XCTest/XCTest.h>

#import "MaterialCollectionCells.h"
#import "MaterialCollectionLayoutAttributes.h"

// Expose internal helper method.
@interface MDCCollectionViewCell (Private)
+ (NSString *)localizedStringWithKey:(NSString *)key;
@end

// Tests confirming that the accessibility hint for (de)selectable cells is correctly set up.
//
// Based on issue https://github.com/material-components/material-components-ios/issues/1257
@interface CollectionCellsIssue1257Tests : XCTestCase
@property(nonatomic, strong) MDCCollectionViewCell *cell;
@property(nonatomic, strong) MDCCollectionViewLayoutAttributes *layoutAttributes;
@end

@implementation CollectionCellsIssue1257Tests

- (void)setUp {
  [super setUp];
  self.cell = [[MDCCollectionViewCell alloc] init];
  self.layoutAttributes = [[MDCCollectionViewLayoutAttributes alloc] init];
}

- (void)testSelectableSelected {
  self.layoutAttributes.shouldShowSelectorStateMask = YES;
  [self.cell applyLayoutAttributes:self.layoutAttributes];
  self.cell.selected = YES;

  XCTAssertEqual(self.cell.accessibilityHint,
                 [MDCCollectionViewCell localizedStringWithKey:kSelectedCellAccessibilityHintKey]);
}

- (void)testSelectableDeselected {
  self.layoutAttributes.shouldShowSelectorStateMask = YES;
  [self.cell applyLayoutAttributes:self.layoutAttributes];
  self.cell.selected = NO;

  XCTAssertEqual(
      self.cell.accessibilityHint,
      [MDCCollectionViewCell localizedStringWithKey:kDeselectedCellAccessibilityHintKey]);
}

- (void)testUnselectable {
  self.layoutAttributes.shouldShowSelectorStateMask = NO;
  [self.cell applyLayoutAttributes:self.layoutAttributes];

  XCTAssertEqual(self.cell.accessibilityHint, nil);
}

@end