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Toot

Written by Robert Ryan on 2024-11-20 at 22:41

Why does the Swift Testing framework only support timeouts measured in minutes? When writing XCTestCase tests, I frequently use “expectations” measured in seconds, not minutes. If I’m unit testing something that slow, I’d generally mock the slow service with something that returned results in a reasonable timeframe. I don’t necessarily mind that they support “minutes”, but it seems odd to not support a much shorter timeout. What is the thought process here? https://developer.apple.com/documentation/testing/limitingexecutiontime

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Written by Matt Massicotte on 2024-11-20 at 22:59

@robertryan I think there’s some documentation that explains this in the docc content. But yeah it’s weird and you aren’t the first person to think so.

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Written by Robert Ryan on 2024-11-20 at 23:03

@mattiem Yeah the headers say: “It is used instead of Swift's built-in Duration type because test timeouts do not support high-precision, arbitrarily short durations. The smallest allowed unit of time is minutes.” Sure, maybe not nanoseconds or attoseconds. But surely “seconds” doesn’t qualify as “high-precision”. Lol.

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