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XCTest tips and tricks that can level up your Swift testing.
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1. Use XCTUnwrap instead of force wrapping optionals
Force unwrapping a nil will cause the test suite to completely crash, meaning no output or reporting. XCTUnwrap provides a nice failure message and fails the test.
Force unwrapping a nil will cause the test suite to completely crash, meaning no output or reporting. XCTUnwrap provides a nice failure message and fails the test.
2. Set continueAfterFailure to false
If you have multiple assertions in a test they might increase in specificity. The first asserts the size of the array and the second assets the first element. You don't want to run the second if the first fails, it's just noise.
If you have multiple assertions in a test they might increase in specificity. The first asserts the size of the array and the second assets the first element. You don't want to run the second if the first fails, it's just noise.
OK, so this change from #file to #filePath in Swift 5.3 is a pain in the arse. I now need to use conditional compiler statements in my custom test assertions (as XCT___ now takes a #filePath) to maintain backwards compatibility.
Discussion on this: forums.swift.org/t/revisiting-t… - I’m a bit confused how this proposal made it through in such a source-breaking way.
All this boilerplate just to work around this issue: github.com/lukeredpath/sw…
