---
title: "we are testing tests"
url: https://daily.dev/posts/we-are-testing-tests-bwtvdjvvd
source_url: https://sarvendev.com/2019/06/mutation-testing-we-are-testing-tests/
type: article
source: "Community Picks"
published: 2024-01-25T20:02:37.483Z
updated: 2026-04-17T02:12:42.497Z
tags: ["mutation-testing", "php", "testing"]
reading_time: 20
upvotes: 5
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
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# we are testing tests

**[Community Picks](https://daily.dev/sources/community)** · 20 min read · 5 upvotes · 0 comments

## Summary

Mutation testing is a tool to assess the quality of tests by modifying small pieces of code and checking the impact on the tests. The Infection framework is popular for mutation testing in PHP. It uses AST (Abstract Syntax Tree) and a parser to create mutated code and execute tests.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://sarvendev.com/2019/06/mutation-testing-we-are-testing-tests/>

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---

Tags: [#mutation-testing](https://daily.dev/tags/mutation-testing), [#php](https://daily.dev/tags/php), [#testing](https://daily.dev/tags/testing)

[View this post on daily.dev](https://daily.dev/posts/we-are-testing-tests-bwtvdjvvd)