testing-r-packages
•published 2026/01/19
Best practices for writing R package tests using testthat version 3+. Use when writing, organizing, or improving tests for R packages. Covers test structure, expectations, fixtures, snapshots, mocking, and modern testthat 3 patterns including self-sufficient tests, proper cleanup with withr, and snapshot testing.
📦 Install Skill
Command line install
Install directly with the `skills` CLI.
npx skills add posit-dev/skills/r-lib/testing-r-packagesFile Explorer
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