The home for great developer writing.

We surface the best developer writing from thousands of independent blogs, updated daily.

The 4 Layers of Testing Every R Package Needs

· Jakub Sobolewski · July 9, 2025, 5:49 p.m.

Testing unit testing software development code-coverage

Summary

This blog post outlines the four essential layers of testing that R packages should include for robustness: unit tests, acceptance tests, code coverage, and mutation testing.

Read full post on jakubsobolewski.com →

MORE POSTS LIKE THIS

Testing functions that use randomness

Users Rust Lang · Apr 23, 2026

Testing unit testing

How to write an Agent Skill

Flaviocopes · Nov 8, 2026

Testing programming

wireskein takes logic analyzer captures and turns them into automated tests

Adafruit Industries Blog · Nov 6, 2026

history programming

sdinthrough: build a parser, one failing test at a time

iio.ie · Nov 2, 2026

Testing software development

Designing a gated, continuous fine-tuning loop for a local coding model: eval gates and rollback

Community Openai · Oct 30, 2026

Machine Learning Testing

Code Contracts: Halfway Between Unit Testing And Formal Verification

Marmelab · Oct 7, 2026

AI Tutorial

Discover more posts →

AUTHOR