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Update the test case `testAnimatedImageBinding` to correctly unit test the AniamtedImage's @Binding update, this time it works

This commit is contained in:
DreamPiggy 2020-02-02 12:40:42 +08:00
parent 4345bd4b5d
commit 53de385099
1 changed files with 53 additions and 24 deletions
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77
Tests/AnimatedImageTests.swift
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@ -20,6 +20,23 @@ extension View {
}
}
extension AnimatedImage {
struct WrapperView: View & Inspectable {
var name: String
var bundle: Bundle?
@State var isAnimating: Bool
var onViewUpdate: (Self, PlatformView, AnimatedImage.Context) -> Void
var body: some View {
AnimatedImage(name: name, bundle: bundle, isAnimating: $isAnimating)
.onViewUpdate { view, context in
self.onViewUpdate(self, view, context)
}
}
}
}
class AnimatedImageTests: XCTestCase {
override func setUp() {
@ -89,38 +106,50 @@ class AnimatedImageTests: XCTestCase {
func testAnimatedImageBinding() throws {
let expectation = self.expectation(description: "AnimatedImage binding control")
let binding = Binding<Bool>(wrappedValue: true)
var context: AnimatedImage.Context?
let imageView = AnimatedImage(name: "TestLoopCount.gif", bundle: TestUtils.testImageBundle(), isAnimating: binding)
.onViewCreate { _, c in
context = c
}
let introspectView = imageView.introspectAnimatedImage { animatedImageView in
var viewUpdateCount = 0
// Use wrapper to make the @Binding works
let wrapperView = AnimatedImage.WrapperView(name: "TestLoopCount.gif", bundle: TestUtils.testImageBundle(), isAnimating: true) { wrapperView, view, context in
viewUpdateCount += 1
guard let animatedImageView = view as? SDAnimatedImageView else {
XCTFail("AnimatedImage's view should be SDAnimatedImageView")
return
}
if let animatedImage = animatedImageView.image as? SDAnimatedImage {
XCTAssertEqual(animatedImage.animatedImageLoopCount, 1)
XCTAssertEqual(animatedImage.animatedImageFrameCount, 2)
} else {
XCTFail("SDAnimatedImageView.image invalid")
XCTFail("AnimatedImage's image should be SDAnimatedImage")
}
#if os(iOS) || os(tvOS)
XCTAssertTrue(animatedImageView.isAnimating)
// View update times before stable from SwiftUI, different behavior for AppKit/UIKit
#if os(macOS)
let stableViewUpdateCount = 1
#else
XCTAssertTrue(animatedImageView.animates)
let stableViewUpdateCount = 2
#endif
binding.wrappedValue = false
XCTAssertFalse(binding.wrappedValue)
XCTAssertFalse(imageView.isAnimating)
// Currently ViewInspector's @Binding value update does not trigger `UIViewRepresentable.updateUIView`, mock here
imageView.updateView(animatedImageView.superview as! AnimatedImageViewWrapper, context: context!)
#if os(iOS) || os(tvOS)
XCTAssertFalse(animatedImageView.isAnimating)
#else
XCTAssertFalse(animatedImageView.animates)
#endif
expectation.fulfill()
switch viewUpdateCount {
case stableViewUpdateCount:
// #1 SwiftUI's own updateUIView call
#if os(iOS) || os(tvOS)
XCTAssertTrue(animatedImageView.isAnimating)
#else
XCTAssertTrue(animatedImageView.animates)
#endif
DispatchQueue.main.async {
wrapperView.isAnimating = false
}
case stableViewUpdateCount + 1:
// #3 AnimatedImage's isAnimating @Binding trigger update (from above)
#if os(iOS) || os(tvOS)
XCTAssertFalse(animatedImageView.isAnimating)
#else
XCTAssertFalse(animatedImageView.animates)
#endif
expectation.fulfill()
default: break
// do not care
}
}
_ = try introspectView.inspect(AnimatedImage.self)
ViewHosting.host(view: introspectView)
ViewHosting.host(view: wrapperView)
self.waitForExpectations(timeout: 5, handler: nil)
}