🚚 :: Restructure test cases

They are now in folders with the same name as the features

Example/ExampleSnapshotTests/NotchGradientLoadingBar/NotchGradientLoadingBarControllerTestCase.swift

@@ -0,0 +1,57 @@
+//
+//  NotchGradientLoadingBarControllerTestCase.swift
+//  ExampleSnapshotTests
+//
+//  Created by Felix Mau on 14.06.20.
+//  Copyright © 2020 Felix Mau. All rights reserved.
+//
+
+import SnapshotTesting
+import XCTest
+
+@testable import GradientLoadingBar
+
+final class NotchGradientLoadingBarControllerTestCase: XCTestCase {
+    // swiftlint:disable:previous type_name
+
+    // MARK: - Private properties
+
+    private var window: UIWindow!
+
+    // MARK: - Public methods
+
+    override func setUp() {
+        super.setUp()
+
+        window = UIApplication.shared.keyWindowInConnectedScenes
+    }
+
+    override func tearDown() {
+        window = nil
+
+        super.tearDown()
+    }
+
+    // MARK: - Test cases
+
+    func test_notchGradientLoadingBarController() {
+        // Given
+        // Show an empty view controller behind loading bar in our test.
+        let rootViewController = UIViewController()
+        window.rootViewController = rootViewController
+
+        let expectation = expectation(description: "Expect view to be completely visible.")
+
+        // When
+        let gradientLoadingBarController = NotchGradientLoadingBarController()
+        gradientLoadingBarController.fadeIn(duration: 0) { _ in
+            expectation.fulfill()
+        }
+
+        // Then
+        wait(for: [expectation], timeout: 0.01)
+
+        // Workaround, as snapshotting a `UIWindow` is currently not supported and crashes when running all tests.
+        assertSnapshot(matching: window.layer, as: .image)
+    }
+}