Get success on UITest when waitForExpectations fails

Question

I have a task to get UITest successfully passed, if expected element (alert in my case) DIDN'T appear before timeout (on server request).

Code:

let element = app.alerts["test text"]
let existsPredicate = NSPredicate(format: "exists == true")
expectation(for: existsPredicate, evaluatedWith: element, handler: nil)

waitForExpectations(timeout: 10, handler: nil)

// when timeout expired test should finish with success

Didn't find any solutions over Internet.

Answer 1

Оооо, you should mind it’s UITest. In that case expectation has nice property: isInverted. Setting this to true, says that expectation is not intended to happen. )))

let element = app.alerts["test text"]
let existsPredicate = NSPredicate(format: "exists == true")
let expectation = expectation(for: existsPredicate, evaluatedWith: element, handler: nil)
expectation.isInverted = true // if alert doesn't appear during 10 seconds, then test passed

waitForExpectations(timeout: 10, handler: nil)