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♻️ :: Enhance test cases

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This commit is contained in:
Felix Mau
2022-05-20 15:40:16 +02:00
parent 8fb9963150
commit 2addd9fa7d
1 changed files with 23 additions and 24 deletions
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Example/ExampleTests/ViewModel/GradientLoadingBarViewModelTestCase.swift
+23 -24
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@@ -36,7 +36,7 @@ final class GradientLoadingBarViewModelTestCase: XCTestCase {
// MARK: - Test observable `superview`
func test_initializer_shouldSetupSuperviewObservable_withNil() throws {
func test_init_shouldSetupSuperviewObservable_withNil() throws {
// When
let viewModel = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
notificationCenter: notificationCenter)
@@ -47,7 +47,7 @@ final class GradientLoadingBarViewModelTestCase: XCTestCase {
XCTAssertEqual(viewModel.superview.value, .some(nil))
}
func test_initializer_shouldSetupSuperviewObservable_withKeyWindow() {
func test_init_shouldSetupSuperviewObservable_withKeyWindow() {
// Given
let keyWindow = UIWindow()
sharedApplicationMock.keyWindowInConnectedScenes = keyWindow
@@ -60,22 +60,27 @@ final class GradientLoadingBarViewModelTestCase: XCTestCase {
XCTAssertEqual(viewModel.superview.value, keyWindow)
}
func test_initializer_shouldSetupSuperviewObservable_afterUIWindowDidBecomeKeyNotification() {
func test_init_shouldSetupSuperviewObservable_afterUIWindowDidBecomeKeyNotification() {
// Given
sharedApplicationMock.keyWindowInConnectedScenes = nil
let viewModel = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
notificationCenter: notificationCenter)
// When
var receivedKeyWindows = [UIView?]()
let disposable = viewModel.superview.subscribe { keyWindow, _ in
receivedKeyWindows.append(keyWindow)
}
let keyWindow = UIWindow()
sharedApplicationMock.keyWindowInConnectedScenes = keyWindow
notificationCenter.post(name: UIWindow.didBecomeKeyNotification,
object: nil)
// When
withExtendedLifetime(disposable) {
notificationCenter.post(name: UIWindow.didBecomeKeyNotification, object: nil)
}
// Then
XCTAssertEqual(viewModel.superview.value, keyWindow)
let expectedKeyWindows = [nil, keyWindow]
XCTAssertEqual(receivedKeyWindows, expectedKeyWindows)
}
func test_deinit_shouldResetSuperviewObservable_withNil() {
@@ -86,25 +91,19 @@ final class GradientLoadingBarViewModelTestCase: XCTestCase {
var viewModel: GradientLoadingBarViewModel? = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
notificationCenter: notificationCenter)
let expectation = expectation(description: "Expected observer to be informed to reset superview to nil.")
var disposeBag = DisposeBag()
// As we've just initialized the view model it has to exist at this point, and therefore we can "safely" use force-unwrapping here.
// swiftlint:disable:next force_unwrapping
viewModel!.superview.subscribe { newSuperview, _ in
guard newSuperview == nil else {
// Skip initial call to observer.
return
}
expectation.fulfill()
}.disposed(by: &disposeBag)
var receivedKeyWindows = [UIView?]()
let disposable = viewModel?.superview.subscribe { keyWindow, _ in
receivedKeyWindows.append(keyWindow)
}
// When
viewModel = nil
withExtendedLifetime(disposable) {
viewModel = nil
}
// Then
wait(for: [expectation], timeout: 0.1)
let expectedKeyWindows = [keyWindow, nil]
XCTAssertEqual(receivedKeyWindows, expectedKeyWindows)
}
}