components/Tabs/tests/unit/MDCTabBarControllerEncodingTests.m

/*
 Copyright 2018-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 "MaterialTabs.h"

@interface MDCTabBarViewControllerDelegateExample : NSObject<MDCTabBarControllerDelegate, NSCoding>

@property (nonatomic, assign) NSInteger exampleInteger;

@end

@implementation MDCTabBarViewControllerDelegateExample

- (instancetype)initWithCoder:(NSCoder *)aDecoder {
  self = [super init];
  if (self) {
    _exampleInteger = [aDecoder decodeIntegerForKey:@"exampleInteger"];
  }
  return self;
}

- (void)encodeWithCoder:(NSCoder *)aCoder {
  [aCoder encodeInteger:_exampleInteger forKey:@"exampleInteger"];
}

- (BOOL)tabBarController:(nonnull MDCTabBarViewController *)tabBarController
    shouldSelectViewController:(nonnull UIViewController *)viewController {
  return YES;
}

- (void)tabBarController:(nonnull MDCTabBarViewController *)tabBarController
    didSelectViewController:(nonnull UIViewController *)viewController {

}

@end

@interface MDCTabBarControllerEncodingTests : XCTestCase

@end

@implementation MDCTabBarControllerEncodingTests

//TODO: (#3220) [TabBar] Re-enable test that is throwing an exception
//- (void)testTabBarControllerEncoding {
//  MDCTabBarViewController *tabBarVC = [[MDCTabBarViewController alloc] init];
//  [tabBarVC.view setBackgroundColor:[UIColor clearColor]];
//
//  UIViewController *vc1 = [[UIViewController alloc] init];
//  UIViewController *vc2 = [[UIViewController alloc] init];
//  vc1.view.tag = 1;
//  vc2.view.tag = 2;
//  tabBarVC.viewControllers = @[vc1, vc2];
//  tabBarVC.selectedViewController = vc1;
//  tabBarVC.tabBar.tintColor = [UIColor colorWithRed:0.6f green:0.2f blue:0.3f alpha:1.0f];
//  MDCTabBarViewControllerDelegateExample *delegate = [[MDCTabBarViewControllerDelegateExample alloc] init];
//  tabBarVC.delegate = delegate;
//  // force view did load
//
//  NSData *archivedData = [NSKeyedArchiver archivedDataWithRootObject:tabBarVC];
//  MDCTabBarViewController *unarchivedTabBarVC =
//      [NSKeyedUnarchiver unarchiveObjectWithData:archivedData];
//  XCTAssertEqual(unarchivedTabBarVC.view.subviews.count, tabBarVC.view.subviews.count);
//  XCTAssertEqual(unarchivedTabBarVC.viewControllers[0].view.tag,
//                 tabBarVC.viewControllers[0].view.tag);
//  XCTAssertEqual(unarchivedTabBarVC.viewControllers[1].view.tag,
//                 tabBarVC.viewControllers[1].view.tag);
//  XCTAssertEqual(unarchivedTabBarVC.selectedViewController.view.tag,
//                 tabBarVC.selectedViewController.view.tag);
//  XCTAssertEqualObjects(unarchivedTabBarVC.tabBar.tintColor, tabBarVC.tabBar.tintColor);
//  XCTAssertNil(unarchivedTabBarVC.delegate);
//}

- (void)testTabBarControllerDelegateEncoding {
  MDCTabBarViewController *tabBarVC = [[MDCTabBarViewController alloc] init];
  [tabBarVC.view setBackgroundColor:[UIColor clearColor]];
  MDCTabBarViewControllerDelegateExample *delegate =
      [[MDCTabBarViewControllerDelegateExample alloc] init];
  delegate.exampleInteger = 2;
  tabBarVC.delegate = delegate;
  NSMutableData *mutableArchivedData = [[NSMutableData alloc] init];
  NSKeyedArchiver *keyedArchiver =
      [[NSKeyedArchiver alloc] initForWritingWithMutableData:mutableArchivedData];
  [keyedArchiver encodeObject:tabBarVC forKey:@"TabBarVC"];
  [keyedArchiver encodeObject:delegate forKey:@"TabBarDelegate"];
  [keyedArchiver finishEncoding];
  NSKeyedUnarchiver *unarchiver =
      [[NSKeyedUnarchiver alloc] initForReadingWithData:mutableArchivedData];
  MDCTabBarViewController *unarchivedTabBarVC =
      [unarchiver decodeObjectForKey:@"TabBarVC"];
  MDCTabBarViewControllerDelegateExample *unarchivedDelegate =
      [unarchiver decodeObjectForKey:@"TabBarDelegate"];
  MDCTabBarViewControllerDelegateExample *tabBarVCDelegate =
      (MDCTabBarViewControllerDelegateExample *)unarchivedTabBarVC.delegate;
  XCTAssertNotNil(unarchivedTabBarVC.delegate);

  XCTAssertEqual(tabBarVCDelegate.exampleInteger, unarchivedDelegate.exampleInteger);
  XCTAssertEqual(delegate.exampleInteger, unarchivedDelegate.exampleInteger);
}

@end