🚚 :: Restructure test cases

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

Example/ExampleTests/GradientLoadingBarView/GradientLoadingBarView+ViewModelTestCase.swift

@@ -0,0 +1,82 @@
+//
+//  GradientLoadingBarView+ViewModelTestCase.swift
+//  ExampleTests
+//
+//  Created by Felix Mau on 22.03.22.
+//  Copyright © 2022 Felix Mau. All rights reserved.
+//
+
+import SwiftUI
+import XCTest
+
+@testable import GradientLoadingBar
+
+// swiftlint:disable:next type_name
+final class GradientLoadingBarView_ViewModelTestCase: XCTestCase {
+
+    // MARK: - Test property `gradientColors`
+
+    func test_initialGradientColors_shouldIncludeReversedGradientColors() {
+        // Given
+        let gradientColors: [Color] = [.red, .yellow, .green]
+
+        // When
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: gradientColors, progressDuration: 1)
+
+        // Then
+        let expectedGradientColors: [Color] = [.red, .yellow, .green, .yellow, .red, .yellow, .green]
+        XCTAssertEqual(viewModel.gradientColors, expectedGradientColors)
+    }
+
+    // MARK: - Test property `horizontalOffset`
+
+    func test_initialHorizontalOffset_shouldBeZero() {
+        // When
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+
+        // Then
+        XCTAssertEqual(viewModel.horizontalOffset, 0)
+    }
+
+    func test_settingSize_shouldUpdateHorizontalOffset() {
+        // Given
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+        let size = CGSize(width: .random(in: 1 ... 100_000), height: .random(in: 1 ... 100_000))
+
+        var receivedValues = [CGFloat]()
+        let subscription = viewModel.$horizontalOffset.sink {
+            receivedValues.append($0)
+        }
+
+        withExtendedLifetime(subscription) {
+            // When
+            viewModel.size = size
+        }
+
+        // Then
+        let expectedValues = [0, -size.width, size.width]
+        XCTAssertEqual(receivedValues, expectedValues)
+    }
+
+    // MARK: - Test property `gradientWidth`
+
+    func test_initialGradientWidth_shouldBeZero() {
+        // When
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+
+        // Then
+        XCTAssertEqual(viewModel.gradientWidth, 0)
+    }
+
+    func test_settingSize_shouldUpdateGradientWidth() {
+        // Given
+        let viewModel = GradientLoadingBarView.ViewModel(gradientColors: [], progressDuration: 1)
+        let size = CGSize(width: .random(in: 1 ... 100_000), height: .random(in: 1 ... 100_000))
+
+        // When
+        viewModel.size = size
+
+        // Then
+        XCTAssertEqual(viewModel.gradientWidth, size.width * 3)
+    }
+}