Update: Added Swift Unit Tests

Signed-off-by: Son Nguyen <[email protected]>

Game-2048UITests/Game_2048UITests.swift

@@ -9,32 +9,56 @@ import XCTest
 
 final class Game_2048UITests: XCTestCase {
 
-    override func setUpWithError() throws {
-        // Put setup code here. This method is called before the invocation of each test method in the class.
+    var app: XCUIApplication!
 
-        // In UI tests it is usually best to stop immediately when a failure occurs.
+    override func setUpWithError() throws {
+        // Initialize the app before each test method
+        app = XCUIApplication()
         continueAfterFailure = false
-
-        // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.
+        app.launch()
     }
 
     override func tearDownWithError() throws {
-        // Put teardown code here. This method is called after the invocation of each test method in the class.
+        // Clean up after each test method
+        app = nil
     }
 
-    func testExample() throws {
-        // UI tests must launch the application that they test.
-        let app = XCUIApplication()
-        app.launch()
+    func testLaunchScreenAndTransitionToGameView() throws {
+        // Verify the app starts on the LaunchScreen
+        let titleText = app.staticTexts["2048"]
+        XCTAssertTrue(titleText.exists, "The 2048 title should be visible on the launch screen.")
+
+        // Verify the transition to the GameView after 2 seconds
+        let exists = NSPredicate(format: "exists == 1")
+        let gameViewText = app.staticTexts["Score"] // Assuming 'Score' is visible in GameView
+        expectation(for: exists, evaluatedWith: gameViewText, handler: nil)
+
+        waitForExpectations(timeout: 3) { error in
+            if error != nil {
+                XCTFail("GameView did not appear after the launch screen.")
+            }
+        }
+    }
+
+    func testGamePlaySwipeLeft() throws {
+        // Ensure we're on the GameView
+        let scoreLabel = app.staticTexts["Score"]
+        XCTAssertTrue(scoreLabel.exists, "Game should be on the GameView after the launch screen.")
+
+        // Perform a swipe left gesture
+        let gameBoard = app.otherElements["GameBoard"] // Ensure the GameView has the correct accessibility identifier set for the grid/board
+        gameBoard.swipeLeft()
 
-        // Use XCTAssert and related functions to verify your tests produce the correct results.
+        // Since it's hard to predict specific gameplay results in a UI test, verify that the score label updates
+        let scoreValue = scoreLabel.label
+        XCTAssertNotEqual(scoreValue, "0", "Score should update after swiping left.")
     }
 
     func testLaunchPerformance() throws {
         if #available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 7.0, *) {
-            // This measures how long it takes to launch your application.
+            // Measures how long it takes to launch the app.
             measure(metrics: [XCTApplicationLaunchMetric()]) {
-                XCUIApplication().launch()
+                app.launch()
             }
         }
     }