🧪 [testing improvement] Add tests for ContentView UserDefaults logic

Click2MinimizeTests/ContentViewTests.swift

@@ -0,0 +1,63 @@
+import XCTest
+import SwiftUI
+@testable import Click2Minimize
+
+final class ContentViewTests: XCTestCase {
+
+    override func setUp() {
+        super.setUp()
+        // Clear UserDefaults before each test
+        UserDefaults.standard.removeObject(forKey: "ClickToMinimizeEnabled")
+    }
+
+    override func tearDown() {
+        // Clear UserDefaults after each test
+        UserDefaults.standard.removeObject(forKey: "ClickToMinimizeEnabled")
+        super.tearDown()
+    }
+
+    func testContentViewDefaultUserDefaultsValue() {
+        // Arrange
+        // Ensure UserDefaults is empty
+        XCTAssertNil(UserDefaults.standard.object(forKey: "ClickToMinimizeEnabled"))
+
+        // Act
+        // Initializing the view should trigger the @State default value logic
+        let _ = ContentView()
+
+        // Assert
+        // Verify that the default value (true) was set in UserDefaults
+        let isEnabled = UserDefaults.standard.bool(forKey: "ClickToMinimizeEnabled")
+        XCTAssertTrue(isEnabled, "isClickToMinimizeEnabled should default to true when UserDefaults is empty")
+    }
+
+    func testContentViewRespectsExistingUserDefaultsValueFalse() {
+        // Arrange
+        // Set an existing value in UserDefaults to false
+        UserDefaults.standard.set(false, forKey: "ClickToMinimizeEnabled")
+
+        // Act
+        // Initializing the view should read the existing value, not overwrite it with the default
+        let _ = ContentView()
+
+        // Assert
+        // Verify that the value remains false
+        let isEnabled = UserDefaults.standard.bool(forKey: "ClickToMinimizeEnabled")
+        XCTAssertFalse(isEnabled, "ContentView should respect existing false value in UserDefaults")
+    }
+
+    func testContentViewRespectsExistingUserDefaultsValueTrue() {
+        // Arrange
+        // Set an existing value in UserDefaults to true
+        UserDefaults.standard.set(true, forKey: "ClickToMinimizeEnabled")
+
+        // Act
+        // Initializing the view
+        let _ = ContentView()
+
+        // Assert
+        // Verify that the value remains true
+        let isEnabled = UserDefaults.standard.bool(forKey: "ClickToMinimizeEnabled")
+        XCTAssertTrue(isEnabled, "ContentView should respect existing true value in UserDefaults")
+    }
+}