Can I use this for Shiny application testing?

Absolutely. The workflow includes patterns suitable for testing Shiny components and complex data processing pipelines.

Does this skill help with test coverage?

Yes, it enforces a minimum of 80% coverage for unit and integration tests, and targets 100% coverage for statistical calculations and data validation.

What testing framework does this R TDD skill use?

This skill is built primarily around the 'testthat' package, specifically optimized for Edition 3 features like snapshot testing and improved diffs.

How does it handle complex outputs that are hard to test manually?

The skill utilizes snapshot testing, which captures the output of a function and compares it against a saved 'golden' file to detect regressions.

Is it compatible with devtools and usethis?

Yes, the skill integrates with 'devtools::load_all()' and 'usethis' commands to initialize testing infrastructure and manage package environments efficiently.

R TDD Workflow

Name: R TDD Workflow
Author: ab604

byab604

•

Security & Testing

Enforces a rigorous test-driven development cycle for R projects using the testthat framework to ensure high-quality code and comprehensive coverage.

This skill streamlines R development by implementing a structured Test-Driven Development (TDD) workflow. It guides developers through the 'Red-Green-Refactor' cycle, emphasizing the creation of tests before implementation code. Supporting testthat Edition 3, the skill handles unit, integration, and snapshot testing while enforcing strict coverage requirements—especially for statistical calculations and data validation. It integrates seamlessly with usethis and devtools, making it ideal for R package developers, data scientists, and Shiny app creators who require robust, verifiable codebases.

Key Features

016 GitHub stars

02Automated TDD cycle integration for R functions and packages

03Pre-configured patterns for mock bindings and fixture management

04Enforced 80%+ coverage standards for core logic and statistical methods

05Hierarchy-based testing including Unit, Integration, and BDD-style tests

06Comprehensive support for testthat Edition 3 and snapshot testing

Use Cases

01Developing new R package features with a test-first approach

02Refactoring legacy R codebases while maintaining functional integrity

03Building mission-critical data processing pipelines with high reliability

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add ab604/claude-code-r-skills tdd-workflow

For use in Claude.ai and ChatGPT

Download Skill