Xcode 8.3: Waiting in XCTest

Joe Masilotti:

At first glance XCTestWaiter is simply a new approach to waiting for XCTestExpectations to fulfill. However, there are a few gems hidden beneath the surface.

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A big advantage of this approach is that the test suite reads as a synchronous flow. There is no callback block or completion handler. The helper method simply returns a boolean indicating if the element appeared or not.

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You are now completely in control of when and how to fail your tests if an expectation fails to fulfill. This enables waiting for optional elements, like a login screen or a location services authorization dialog.

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Along with the new waiter class, XCTestExpectations was subclassed to make specific expectations a little easier to write.

Previously: XCTestExpectation Gotchas, Xcode 6.0.1 Asynchronous Tests, XCTest​Case / XCTest​Expectation / measure​Block().

iOS iOS 10 Mac macOS 10.12 Sierra Programming Swift Programming Language Testing Xcode

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