PHP Mutation Testing with Infection

This repository contains a small project with unit tests.

Will we apply the PHP Mutation Testing tool Infection to discover if our unit tests are solid.

Even though the tests were reporting 100% coverage of the code, Infection reported use some escaped Mutants, that permitted us to focus on some forgotten parts in our tests.

Run

Install dependencies

composer install

Run PHPUnit tests

vendor/bin/phpunit

Run Infection

vendor/bin/infection

Branches

You can use the branches to see the improvements steps taken

• run-infection
• kill-mutant-3-legged-duck
• kill-mutant-spring-false
• kill-mutant-spring-2-birds

Infection reports are available under ./reports/infection

Conferences

This project has been used as demonstration during the my talk at the AFUP Day 2020 Nantes