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Add support for using a spring generator as a timing curve. (#91)
* Add support for using a spring generator as a timing curve. * Fix method name.
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| /* | ||
| Copyright 2017-present The Material Motion Authors. All Rights Reserved. | ||
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| 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 | ||
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| http://www.apache.org/licenses/LICENSE-2.0 | ||
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| 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. | ||
| */ | ||
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| import XCTest | ||
| #if IS_BAZEL_BUILD | ||
| import _MotionAnimator | ||
| #else | ||
| import MotionAnimator | ||
| #endif | ||
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| class SpringTimingCurveTests: XCTestCase { | ||
| var animator: MotionAnimator! | ||
| var traits: MDMAnimationTraits! | ||
| var view: UIView! | ||
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| var originalImplementation: IMP? | ||
| override func setUp() { | ||
| super.setUp() | ||
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| animator = MotionAnimator() | ||
| traits = MDMAnimationTraits(duration: 1) | ||
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| let window = UIWindow() | ||
| window.makeKeyAndVisible() | ||
| view = UIView() // Need to animate a view's layer to get implicit animations. | ||
| window.addSubview(view) | ||
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| // Connect our layers to the render server. | ||
| CATransaction.flush() | ||
| } | ||
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| override func tearDown() { | ||
| animator = nil | ||
| traits = nil | ||
| view = nil | ||
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| super.tearDown() | ||
| } | ||
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| @available(iOS 9.0, *) | ||
| func testGeneratorCanBeUsedAsATimingCurve() { | ||
| traits.timingCurve = MDMSpringTimingCurveGenerator(duration: traits.duration, dampingRatio: 0.5) | ||
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| animator.animate(with: traits, between: [1, 0], layer: view.layer, keyPath: .cornerRadius) | ||
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| XCTAssertNotNil(view.layer.animationKeys(), | ||
| "Expected an animation to be added, but none were found.") | ||
| guard let animationKeys = view.layer.animationKeys() else { | ||
| return | ||
| } | ||
| XCTAssertEqual(animationKeys.count, 1, | ||
| "Expected only one animation to be added, but the following were found: " | ||
| + "\(animationKeys).") | ||
| guard let key = animationKeys.first else { | ||
| return | ||
| } | ||
| XCTAssertTrue(view.layer.animation(forKey: key) is CASpringAnimation, | ||
| "Expected the animation to be a spring, but it was not: " | ||
| + " \(view.layer.animation(forKey: key).debugDescription)") | ||
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| } | ||
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| } |