tdd-workflow

To enforce test-first development in R packages, configure testthat and usethis to scaffold testing infrastructure, create initial tests before implementation, and run the suite to verify behavior. This workflow guides the creation of unit and integration tests to ensure reliable, well-documented code.

The best way to improve test coverage during R code refactoring is to apply a structured test-driven workflow using testthat. This approach enforces comprehensive test creation before modifying code, ensuring maintainability and catching edge cases to prevent brittle code.

Set up testthat and usethis for TDD by initializing the testing infrastructure for your R package. Configure testthat, use usethis for scaffolding to create an initial test file, and run the test suite to establish a green baseline for feature development.

Yes, test-driven development works for bug fixes in R packages. This workflow guides you to write tests that reproduce the bug before fixing the implementation, ensuring reliable code and comprehensive test coverage that prevents future regressions.

R package development often lacks testing discipline because the process is not enforced, leading to brittle code and missed edge cases. A structured TDD workflow enforces test-first design to improve reliability, maintainability, and documentation across packages.

Yes, you can use this TDD workflow for both unit and integration tests in R. It guides the creation of tests with clear structure and expectations, supporting feature development, bug fixes, and refactoring to maintain high test coverage across packages.