Gio Lodi • 2/25/2022

XCTNSPredicateExpectation is slow, and what to do about it

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This technical article analyzes the performance issues of XCTNSPredicateExpectation in Swift/XCTest, revealing it requires a minimum 1.1-second timeout due to polling. It provides benchmarks, explains the underlying cause, and recommends replacing it with the Nimble framework's toEventually matcher to speed up asynchronous test suites.

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#unit testing #Swift #Ios Development
XCTNSPredicateExpectation is slow, and what to do about it

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