This matches a behavior change made in the Xcode copy of XCTest and allows tests which call XCTestCase.expectation(description:) — as well as other XCTestCase APIs that return an XCTestExpectation — to do so from any thread. This removes a previous requirement that tests call these APIs from the main thread, and it allows existing tests using them to adopt async without requiring @MainActor.
stmontgomery
commented
2 years ago
This matches a behavior change made in the Xcode copy of XCTest and allows tests which call
XCTestCase.expectation(description:)— as well as otherXCTestCaseAPIs that return anXCTestExpectation— to do so from any thread. This removes a previous requirement that tests call these APIs from the main thread, and it allows existing tests using them to adoptasyncwithout requiring@MainActor.rdar://85344643 rdar://79163972 rdar://81024086