iOS Unit Testing (Swift Testing)

Three core principles ensure reliable unit tests:

1. Use Swift Testing framework - Modern @Test and #expect syntax for new tests
2. Keep container alive - Always capture ModelContainer when using SwiftData contexts
3. Safe unwrapping patterns - Never force unwrap; use guard with explicit failures

Scope

If input arguments provided:

Scope / file pattern: $ARGUMENTS

else:

Scope:

• Determine what unit tests need to be created or updated based on either: A - New or modified code in the current phase/PR (analyze changed files and map to testable components); or