components/FeatureHighlight/tests/unit/FeatureHighlightViewControllerTests.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 "MaterialFeatureHighlight.h"

@interface FeatureHighlightViewControllerTests : XCTestCase

@end

@implementation FeatureHighlightViewControllerTests

- (void)testFeatureHighlightViewIsNotLoadedWhenSettingProperties {
  UIView *view = [[UIView alloc] init];
  UIView *view2 = [[UIView alloc] init];
  MDCFeatureHighlightViewController *controller =
      [[MDCFeatureHighlightViewController alloc] initWithHighlightedView:view
                                                             andShowView:view2
                                                              completion:nil];
  controller.titleFont = [UIFont systemFontOfSize:2];
  controller.bodyFont = [UIFont systemFontOfSize:2];
  controller.titleColor = [UIColor redColor];
  controller.bodyColor = [UIColor redColor];
  controller.innerHighlightColor = [UIColor redColor];
  controller.outerHighlightColor = [UIColor redColor];
  controller.titleText = @"test";
  controller.bodyText = @"testBody";

  XCTAssertFalse(controller.isViewLoaded);
}

- (void)testTraitCollectionDidChangeBlockCalledWithExpectedParameters {
  // Given
  MDCFeatureHighlightViewController *controller =
      [[MDCFeatureHighlightViewController alloc] initWithHighlightedView:[[UIView alloc] init]
                                                             andShowView:[[UIView alloc] init]
                                                              completion:nil];
  XCTestExpectation *expectation =
      [[XCTestExpectation alloc] initWithDescription:@"traitCollection"];
  __block UITraitCollection *passedTraitCollection = nil;
  __block MDCFeatureHighlightViewController *passedFeatureHighlight = nil;
  controller.traitCollectionDidChangeBlock =
      ^(MDCFeatureHighlightViewController *_Nonnull featureHighlight,
        UITraitCollection *_Nullable previousTraitCollection) {
        passedTraitCollection = previousTraitCollection;
        passedFeatureHighlight = featureHighlight;
        [expectation fulfill];
      };
  UITraitCollection *fakeTraitCollection = [UITraitCollection traitCollectionWithDisplayScale:7];

  // When
  [controller traitCollectionDidChange:fakeTraitCollection];

  // Then
  [self waitForExpectations:@[ expectation ] timeout:1];
  XCTAssertEqual(passedFeatureHighlight, controller);
  XCTAssertEqual(passedTraitCollection, fakeTraitCollection);
}

@end