Skip to content

Instantly share code, notes, and snippets.

@jonathan-beebe
Last active November 1, 2023 19:11
  • Star 8 You must be signed in to star a gist
  • Fork 2 You must be signed in to fork a gist
Star You must be signed in to star a gist
Save jonathan-beebe/09f4e588005925d78ab1 to your computer and use it in GitHub Desktop.
Detect if a Swift iOS app delegate is running unit tests
import UIKit
// Detect if the app is running unit tests.
// Note this only detects unit tests, not UI tests.
func isRunningUnitTests() -> Bool {
let env = NSProcessInfo.processInfo().environment
if let injectBundle = env["XCInjectBundle"] {
return NSString(string: injectBundle).pathExtension == "xctest"
}
return false
}
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
if(isRunningUnitTests()) {
print("TESTING")
// Create an empty window. Useful for unit tests that might need to alter the view heirarchy or
// add views during their tests.
let window = UIWindow(frame: UIScreen.mainScreen().bounds)
window.rootViewController = UIViewController()
window.makeKeyAndVisible()
self.window = window
return true
}
// Perform the normal app init here
makeWindow()
return true
}
func makeWindow() {
// Do whatever you need here to create the root view controller of the app.
let vc = UIStoryboard.init(name: "Main", bundle: NSBundle.mainBundle()).instantiateViewControllerWithIdentifier("ViewController")
let window = UIWindow(frame: UIScreen.mainScreen().bounds)
window.rootViewController = vc
window.makeKeyAndVisible()
self.window = window
}
}
@haarismuneer
Copy link

Thank you so much! This is the only solution that ended up working for me.

@kdawgwilk
Copy link

This appears to have broke in Xcode 9 :(

@PeqNP
Copy link

PeqNP commented Nov 4, 2017

It looks like they changed it to XCInjectBundleInto. I've been using the following with pretty good success between versions:

func isRunningUnitTests() -> Bool {
    let env = ProcessInfo.processInfo.environment
    if env["XCTestConfigurationFilePath"] != nil {
        return true
    }
    return false
}

@igordeoliveirasa
Copy link

Isn't it better?

func isRunningUnitTests() -> Bool {
    return ProcessInfo.processInfo.environment.keys.contains("XCTestConfigurationFilePath")
}

@nhnam
Copy link

nhnam commented Jul 18, 2018

It works for me !
screen shot 2018-07-18 at 12 23 29 pm
screen shot 2018-07-18 at 12 23 37 pm

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment