No. 13 of 32 ·Unit Testing Frameworks

Pest

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Freedom report

One barScore 5.4

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedThinly documented

Pest is ranked #13 of 32 in unit testing frameworks on Freedom251. It runs on Linux, macOS, Windows.

Compared on unit testing frameworks

Free plan: Yes
Supported languages: PHP
Built-in mocks: No
Parameterized cases: Yes
Parallel execution: Yes
Snapshot testing: Yes

Best Pest alternatives

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The record

Purpose: Pest is a PHP testing framework for developers and AI agents.
Install: Pest is installed in a PHP project as a Composer development dependency.
PHP requirement: Pest 5 requires PHP 8.4 or greater.
Testing features: Pest lists parallel execution, browser testing, profiling, architectural testing, coverage, mutation testing, and optional plugins among its features.
Browser testing: The Browser plugin uses Playwright to run browser tests that can interact with pages, including clicking buttons and filling forms.
AI agent checks: The Agent plugin lets coding agents run one-off verifications against an application using Pest tests and can drive a real browser when the Browser plugin is installed.
AI evaluations: Pest Evals can combine deterministic checks with AI-powered scorers to assess LLM output from a test suite.
Test impact analysis: The Tia Engine reruns tests affected by recent changes and requires PCOV or Xdebug as a code coverage driver.
Integrations: Pest's team-maintained plugins include Faker, Laravel, and Livewire.
PHP tooling: Pest 5 includes first-party plugins for PHPStan and Rector, and its release page describes time-balanced sharding for CI machines.
Security testing: Pest's Evals documentation describes a toBeSafe() scorer for checking whether an AI agent resists prompt injection.
Support: Pest's maintainers say they cannot guarantee a fixed bug resolution time or a fix for every issue; bug fixes for outdated versions are available for 12 months after the latest version's release.
Who it is for: Pest says it is suitable for small personal projects and large-scale enterprise applications.
Maker: The site describes Pest as a PestPHP project by Nuno Maduro.

Where it ranks on Freedom251

Best Unit Testing Frameworks in 2026#13 of 32

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Sources

pestphp.com· checked 5 Oct 2026
pestphp.com/docs/installation· checked 5 Oct 2026
pestphp.com/docs/why-pest· checked 5 Oct 2026
pestphp.com/docs/browser-testing· checked 5 Oct 2026
pestphp.com/docs/agent· checked 5 Oct 2026
pestphp.com/docs/pest5-now-available· checked 5 Oct 2026
pestphp.com/docs/tia· checked 5 Oct 2026
pestphp.com/docs/plugins· checked 5 Oct 2026
pestphp.com/docs/support-policy· checked 5 Oct 2026