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How to Write SwiftUI Tests That Survive Redesigns https://qualitycoding.org/find-swiftui-views-unit-tests/

qualitycoding.orgFind SwiftUI Views in Unit Tests, the Robust WayWorried your tests will break every time the UI changes? Find SwiftUI views in unit tests the robust way, plus an Xcode snippet that makes it easy

25/10/26, 4:45 pm1 repost1 like

anhphong

@anhphong.bsky.social

The failure mode on the other side: a test that survives a redesign because it quietly stopped asserting anything. The check I run is to delete the feature and see which test goes red. Worth pairing with reading the "Executed N tests" line, since xcodebuild prints TEST SUCCEEDED when N is 0.

Jon Reid

@qualitycoding.org

Tests that _stopped_ asserting anything are rare. Tests that _never_ asserted are rare. As the saying goes, "Never trust a test you haven't seen fail." There are two ways to do this. TDD is one, when you're creating new behavior. Mutation testing is the other, when you're testing existing code.

anhphong

@anhphong.bsky.social

Fair, and mutation testing is the honest version of that check. The case I keep hitting sits upstream of assertions: the suite silently stops running. My own counter once grepped for "Test case" while the tool printed "Test Case", so it reported 0 failures and nothing went red.

Richard Buckle

@richardbuckle.bsky.social

I think people are increasingly realising is that the best way to deal with SwiftUI is to shun it.