Unit testing code coverage inside the closure

[EddieLukeAtmey]

Is there any way to write Unit Test that can cover the code inside the closure block?

For example, here's a block of code I'd like to cover. How can I trigger the textField closure?

[EddieLukeAtmey]

I've found a hack to solve this issue:

import Closures

let tfPhone = try XCTUnwrap(vc.value(forKey: "phoneTextField") as? UITextField)
let selTextChange = Selector("editingChangedWithSender:event:")
tfPhone.perform(selTextChange, with: tfPhone, with: UIEvent())