✅ :: Adapt test cases

2026-06-16 12:24:31 +00:00 · 2019-08-25 22:34:48 +02:00
parent 88cfdeb994
commit 28a82bdaf7
4 changed files with 186 additions and 241 deletions
@@ -0,0 +1,147 @@
+//
+//  GradientLoadingBarViewModelTestCase.swift
+//  GradientLoadingBar_Tests
+//
+//  Created by Felix Mau on 12/26/17.
+//  Copyright © 2017 Felix Mau. All rights reserved.
+//
+
+import XCTest
+
+@testable import LightweightObservable
+@testable import GradientLoadingBar
+
+class GradientLoadingBarViewModelTestCase: XCTestCase {
+    // MARK: - Types
+
+    typealias VisibilityAnimation = GradientLoadingBarViewModel.VisibilityAnimation
+
+    // MARK: - Private properties
+
+    private var sharedApplicationMock: SharedApplicationMock!
+    private var notificationCenter: NotificationCenter!
+
+    private var viewModel: GradientLoadingBarViewModel!
+
+    // MARK: - Public methods
+
+    override func setUp() {
+        super.setUp()
+
+        sharedApplicationMock = SharedApplicationMock()
+        notificationCenter = NotificationCenter()
+
+        viewModel = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
+                                                notificationCenter: notificationCenter)
+    }
+
+    override func tearDown() {
+        viewModel = nil
+
+        notificationCenter = nil
+        sharedApplicationMock = nil
+
+        super.tearDown()
+    }
+
+    // MARK: - Test observable `superview`
+
+    func testInitializerShouldSetupSuperviewObservableWithKeyWindow() {
+        // Given
+        let keyWindow = UIWindow()
+        sharedApplicationMock.keyWindow = keyWindow
+
+        // When
+        let viewModel = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
+                                                    notificationCenter: notificationCenter)
+
+        // Then
+        XCTAssertEqual(viewModel.superview.value,
+                       keyWindow)
+    }
+
+    func testInitializerShouldSetupSuperviewObservableAfterUIWindowDidBecomeKeyNotification() {
+        // Given
+        let viewModel = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
+                                                    notificationCenter: notificationCenter)
+
+        let keyWindow = UIWindow()
+
+        // When
+        sharedApplicationMock.keyWindow = keyWindow
+        notificationCenter.post(name: UIWindow.didBecomeKeyNotification,
+                                object: nil)
+
+        // Then
+        XCTAssertEqual(viewModel.superview.value,
+                       keyWindow)
+    }
+
+    func testInitializerShouldSetupSuperviewObservableAfterUIWindowDidBecomeKeyNotificationJustOnce() {
+        // Given
+        let viewModel = GradientLoadingBarViewModel(sharedApplication: sharedApplicationMock,
+                                                    notificationCenter: notificationCenter)
+
+        let expectation = self.expectation(description: "Expected observer for superview to be informed just once.")
+
+        var disposeBag = DisposeBag()
+        viewModel.superview.subscribe { newSuperview, _ in
+            guard newSuperview != nil else {
+                // Skip initial call to observer.
+                return
+            }
+
+            expectation.fulfill()
+        }.disposed(by: &disposeBag)
+
+        // When
+        for _ in 1 ... 3 {
+            sharedApplicationMock.keyWindow = UIWindow()
+            notificationCenter.post(name: UIWindow.didBecomeKeyNotification,
+                                    object: nil)
+        }
+
+        // Then
+        wait(for: [expectation], timeout: 0.1)
+    }
+
+    // MARK: - Test observable `visibilityAnimation`
+
+    func testInitializerShouldSetupVisibilityAnimationObservableWithImmediatelyHidden() {
+        // Then
+        let receivedVisibilityAnimation = viewModel.visibilityAnimation.value
+        let expectedVisibilityAnimation = VisibilityAnimation.immediatelyHidden
+
+        XCTAssertEqual(receivedVisibilityAnimation, expectedVisibilityAnimation)
+    }
+
+    func testShowShouldUpdateVisibilityAnimationObservable() {
+        // When
+        viewModel.show()
+
+        // Then
+        let receivedVisibilityAnimation = viewModel.visibilityAnimation.value
+        let expectedVisibilityAnimation = VisibilityAnimation(duration: viewModel.fadeInDuration,
+                                                              isHidden: false)
+
+        XCTAssertEqual(receivedVisibilityAnimation, expectedVisibilityAnimation)
+    }
+
+    func testHideShouldUpdateVisibilityAnimationObservable() {
+        // When
+        viewModel.hide()
+
+        // Then
+        let receivedVisibilityAnimation = viewModel.visibilityAnimation.value
+        let expectedVisibilityAnimation = VisibilityAnimation(duration: viewModel.fadeOutDuration,
+                                                              isHidden: true)
+
+        XCTAssertEqual(receivedVisibilityAnimation, expectedVisibilityAnimation)
+    }
+}
+
+// MARK: - Mocks
+
+class SharedApplicationMock: UIApplicationProtocol {
+    var keyWindow: UIWindow?
+}