react-testing-conventions

The `react-testing-conventions` skill provides a structured approach to testing React Native applications using TypeScript. It addresses common challenges in writing and maintaining reliable tests by defining clear conventions for test organization, naming, and execution. By following these guidelines, developers can ensure their tests are fast, maintainable, and consistent across the codebase, reducing flakiness and improving overall code quality. This skill is especially helpful for teams adopting Test-Driven Development (TDD) or integrating new developers into a project with established testing standards.

Key features of this skill include guidance on the testing pyramid, emphasizing a hierarchy of unit, integration, and end-to-end tests, as well as adherence to the FIRST principles to ensure tests are fast, independent, repeatable, self-validating, and timely. It defines file naming conventions for unit and E2E tests, recommends colocating unit and integration tests with the code they test, and provides a dedicated structure for E2E tests. Additionally, it covers the AAA (Arrange, Act, Assert) pattern for writing tests, test naming best practices, and the principle of having one logical assertion per test. The skill also explains the use of test doubles such as dummies, stubs, spies, and mocks, and suggests using the builder pattern for test fixtures to streamline test setup.

This skill is ideal for software engineers, QA engineers, and code reviewers working with React Native and TypeScript who want to standardize testing practices within their projects. It can be applied when writing new tests, reviewing existing test code, or setting up test infrastructure to ensure consistent quality and maintainability. By following the conventions outlined, teams can reduce errors, accelerate development cycles, and foster a culture of reliable, well-tested code.