🌟 Choose Between #expect and #require in Swift Tests

TL;DR: Use #require in Swift Tests for critical conditions; it unwraps optionals, mandates try, and halts tests on failure. Choose #expect for non-critical assertions that allow test execution to continue after failure.

In the Swift Testing framework, #expect and #require are common assertion macros. While they serve similar purposes, they differ significantly in behavior and use cases.

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Key Differences

1. Usage of try

#require mandates the use of try regardless of whether the Boolean expression might throw an error. Example:

@Test func person()…