Mutant in the Wild

Coverage of Mutant: academic papers, conference talks, blog posts, and more.

Industry

Date	Title
Nov 2019	Smith: "Chasing Mutants" in The Future of Software Quality Assurance (Springer, open access)
Jun 2015	Trail of Bits Ruby Security Field Guide

Academic

Date	Title
May 2024	Sanchez et al.: Mutation Testing in Practice (IEEE TSE)
Jul 2022	Sanchez et al.: Mutation Testing in the Wild (Springer, presented at ICSE 2023)
Apr 2015	Li, West, Escalona: Mutation Testing in Practice using Ruby (IEEE)

Conference Talks

Date	Speaker	Event	Focus
Nov 2024	Tyler Lemburg	RubyConf	Mutant deep-dive, brings example app to full mutation coverage
Jan 2023	Tokyo Rubyist Meetup	Tokyo	Mutation testing intro for Ruby
Nov 2019	Dave Aronson	RubyConf	Language-agnostic mutation testing intro, Mutant as primary Ruby tool
Apr 2017	John Backus	RailsConf	Mutant as pre-deploy gate at Cognito (acq. by Plaid)
Apr 2014	Erik Michaels-Ober	RailsConf	Mutant deep-dive
Oct 2013	Don Schado	Cologne.rb	Mutant walkthrough
Jul 2012	Chris Sinjakli	IPRUG	Early mutation testing in Ruby

Podcasts & Screencasts

Date	Podcast	Focus
Feb 2021	Small Batches Ep. 33	Markus Schirp on developer principles and mutation testing
May 2020	Ruby Rogues Ep. 459	Dave Aronson on mutation testing with Mutant
Sep 2020	Absolute AppSec Ep. 107	Markus Schirp on Ruby, dynamic languages, mutation testing
Aug 2019	Ruby on Rails Podcast #283	Kill All Mutants with Dave Aronson — Mutant as primary Ruby tool
Jul 2018	RubyTapas: Better Tests with Mutant	Daniel Gollahon screencast on using Mutant
May 2015	Rails Refactoring Podcast Ep. 3	Markus Schirp on mutation testing and test coverage

Blog Posts

Date	Author	Title
Feb 2026	Markus Schirp	Pattern Parrots and the Semantic Knot
Mar 2025	Dave Russell	Mutation Testing with Ruby
Aug 2022	Alan Foster	Testing approaches in Ruby
Jun 2022	Arkency	Which one to use? eql? vs equal? vs ==?
Jul 2019	Nebulab	An Introduction to Mutation Testing
Dec 2017	Tester's Digest	#42: Mutation Testing
Sep 2017	Arkency	How mutation testing causes deeper thinking about your code
Sep 2017	Arkency	How to setup development work with RailsEventStore and mutant
Jun 2017	Will Murphy	Watch for Mutants
Jun 2017	Will Murphy	Mutant and Minitest
Mar 2017	Neon Tapir	Mutation Testing in Ruby
Aug 2016	Timo Rossner	How Does Mutant Work?
Jun 2016	Arkency	Mutation testing of Rails views
Oct 2015	Cognito	How to Write Better Code Using Mutation Testing
Jun 2015	Arkency	How good are your Ruby tests?
Jun 2015	Adrian Perez	The gems that keep you honest
May 2015	Arkency	Mutation testing and continuous integration
Apr 2015	Arkency	Why I want to introduce mutation testing to the RailsEventStore gem
Apr 2014	SitePoint	Mutation Testing with Mutant

Curated Lists

• awesome-mutation-testing — Mutant as primary Ruby tool
• awesome-ruby (markets) — Code Analysis section
• The Ruby Toolbox