ios-testing
iOS Testing Best Practices
Comprehensive testing guide for iOS and Swift applications, written at principal engineer level. Contains 44 rules across 8 categories, prioritized by impact to guide test architecture decisions, test authoring patterns, and CI infrastructure.
Clinic Architecture Contract (iOS 26 / Swift 6.2)
All guidance in this skill assumes the clinic modular MVVM-C architecture:
- Feature modules import
Domain+DesignSystemonly (neverData, never sibling features) - App target is the convergence point and owns
DependencyContainer, concrete coordinators, and Route Shell wiring Domainstays pure Swift and defines models plus repository,*Coordinating,ErrorRouting, andAppErrorcontractsDataowns SwiftData/network/sync/retry/background I/O and implements Domain protocols- Read/write flow defaults to stale-while-revalidate reads and optimistic queued writes
- ViewModels call repository protocols directly (no default use-case/interactor layer)
When to Apply
Reference these guidelines when:
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