Is it possible to stub HTTP requests in Xcode 7 automated UI tests?

Question

I\'ve been trying to intercept and stub/mock HTTP requests in Xcode 7 automated UI tests, using tools like OHHTTPStubs, with no luck.

Here\'s an example of how I am tryi

Answer 1

UI tests are ran in a separate instance from your application. While the classes from the application might be available to you, they are merely a copy.

In your application you can detect if you're running in UI testing mode with solutions provided here: How to detect if iOS app is running in UI Testing mode

I personally went with the launchEnvironment solution mentioned in the original post; my setUp looks like this:

override func setUp() {
    super.setUp()

    let app = XCUIApplication()
    app.launchEnvironment["TEST"] = "1"
    app.launch()
}

And one of my singleton instantiators (called RealmManager) looks like this (for instantiating a Realm database):

func realm() -> Realm {
    let dic = NSProcessInfo.processInfo().environment
    if dic["TEST"] != nil {
        return try! Realm(configuration: Realm.Configuration(inMemoryIdentifier: "test"))
    }
    return try! Realm()
}

If you dislike the duplication, but you're probably already duplicating XCUIApplication().launch() anyway, you can always make a custom test case class that extend XCTestCase, override the setUp there with this addition and then use that in all your test classes.