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1161a9db98
The Flexible needs an API so clients can hook-in to trait collection changes. This additionally passes the flexibleHeader as a parameter so clients can modify the flexible header within the block.
71 lines
2.6 KiB
Objective-C
71 lines
2.6 KiB
Objective-C
// Copyright 2019-present the Material Components for iOS authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import <XCTest/XCTest.h>
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#import "MaterialFlexibleHeader.h"
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@interface FlexibleHeaderViewControllerTraitCollectionTests : XCTestCase
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@end
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@implementation FlexibleHeaderViewControllerTraitCollectionTests
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- (void)testTraitCollectionDidChangeBlockCalledWhenTraitCollectionChanges {
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// Given
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MDCFlexibleHeaderViewController *flexibleHeaderController =
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[[MDCFlexibleHeaderViewController alloc] init];
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XCTestExpectation *expectation =
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[self expectationWithDescription:@"Called traitCollectionDidChange"];
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flexibleHeaderController.traitCollectionDidChangeBlock =
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^(MDCFlexibleHeaderViewController *_Nonnull flexibleHeaderViewController,
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UITraitCollection *_Nullable previousTraitCollection) {
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[expectation fulfill];
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};
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// When
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[flexibleHeaderController traitCollectionDidChange:nil];
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// Then
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[self waitForExpectations:@[ expectation ] timeout:1];
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}
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- (void)testTraitCollectionDidChangeBlockCalledWithExpectedParameters {
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// Given
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MDCFlexibleHeaderViewController *flexibleHeaderController =
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[[MDCFlexibleHeaderViewController alloc] init];
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XCTestExpectation *expectation =
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[self expectationWithDescription:@"Called traitCollectionDidChange"];
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__block UITraitCollection *passedTraitCollection;
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__block MDCFlexibleHeaderViewController *passedFlexibleHeader;
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flexibleHeaderController.traitCollectionDidChangeBlock =
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^(MDCFlexibleHeaderViewController *_Nonnull flexibleHeaderViewController,
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UITraitCollection *_Nullable previousTraitCollection) {
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passedTraitCollection = previousTraitCollection;
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passedFlexibleHeader = flexibleHeaderViewController;
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[expectation fulfill];
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};
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// When
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UITraitCollection *testCollection = [UITraitCollection traitCollectionWithDisplayScale:77];
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[flexibleHeaderController traitCollectionDidChange:testCollection];
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// Then
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[self waitForExpectations:@[ expectation ] timeout:1];
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XCTAssertEqual(passedTraitCollection, testCollection);
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XCTAssertEqual(passedFlexibleHeader, flexibleHeaderController);
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}
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@end
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