How to speed up UI test cases in Xcode?

Try setting this property when your UI tests run:

UIApplication.shared.keyWindow?.layer.speed = 100

Here's how I set it:

func application(_ application: UIApplication,                 didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {    if ProcessInfo.processInfo.arguments.contains("UITests") {        UIApplication.shared.keyWindow?.layer.speed = 100    }}

And in my UI tests:

class MyAppUITests: XCTestCase {    // MARK: - SetUp / TearDown    override func setUp() {        super.setUp()        let app = XCUIApplication()        app.launchArguments = ["UITests"]        app.launch()    }}

There's a few more handy tips in this blog post.

Another possibility is to disable animations at all:

[UIView setAnimationsEnabled:NO];

Swift 3:

UIView.setAnimationsEnabled(false)

Following @Mark answer, the Swift 3 version:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {    if ProcessInfo.processInfo.arguments.contains("UITests") {        UIApplication.shared.keyWindow?.layer.speed = 200    }}

On you ui test file:

override func setUp() {    super.setUp()    // Put setup code here. This method is called before the invocation of each test method in the class.    let app = XCUIApplication()    app.launchArguments = ["UITests"]    app.launch()