dart-migrate-to-checks-package

To migrate Dart test assertions from package:matcher to package:checks, you convert legacy expect patterns to the more expressive checks syntax. This involves updating test imports, adding the checks dependency, and replacing matcher-based assertions while preserving original test behavior.

The difference between package:matcher and package:checks is that checks provides a more expressive API for Dart testing. Migrating to package:checks replaces traditional expect patterns with modern checks-style assertions, improving test readability and reducing manual conversion effort.

To update Flutter test imports when switching to the checks package, you add the package:checks dependency and remove unnecessary package:matcher usage. This dependency change is a required step to validate and support the new checks-style assertion syntax.

Yes, you can convert async Dart test assertions to checks syntax. The migration process specifically applies to Dart testing workflows involving async test migration scenarios, transforming async assertion patterns into their package:checks equivalents.

Migrating to package:checks does preserve existing Dart test behavior. The migration process includes validation steps for converting matcher-based tests, ensuring that updating to modern checks-style assertions maintains the original test outcomes.