Rust Tests Guidelines

The rust-tests-guidelines skill provides a structured approach to writing effective Rust tests, ensuring code reliability through best practices specific to the language. It guides developers on setting up test environments, utilizing assertions, and organizing test suites for maintainability.

When to use it

• Onboarding new team members: Establish a consistent testing standard across the project quickly.
• Refactoring legacy code: Validate existing functionality while modifying complex Rust modules.
• CI/CD pipeline integration: Ensure automated builds pass by defining clear unit and integration test requirements.
• Educational purposes: Teach junior developers how to write idiomatic tests in Rust.

Key capabilities

• Defines conventions for test file naming and directory structure.
• Outlines strategies for mocking external dependencies in isolation.
• Specifies criteria for choosing between unit, integration, and end-to-end tests.
• Recommends tools and macros for efficient assertion handling.

Example prompts

• "Generate a comprehensive test suite for this Rust struct following the guidelines."
• "Explain how to mock a database connection in my Rust application's test environment."
• "Review my current test file and suggest improvements based on standard Rust practices."

Tips & gotchas

Ensure your project includes cargo as the build tool, as these guidelines rely heavily on its ecosystem. Avoid over-testing simple functions; focus coverage on complex logic paths and edge cases instead of trivial operations.