Client loginBook a call
Build
Custom Software DevelopmentSystems built to your process
Web Application DevelopmentReact, Next.js, Rails, Django
Mobile App DevelopmentiOS, Android, React Native
App DevelopmentWeb and mobile apps, end to end
SaaS Product DevelopmentMulti-tenant from day one
MVP DevelopmentFirst release in 6–10 weeks
Enterprise SoftwareSSO, audit trails, scale
Connect & operate
API Development & IntegrationREST, GraphQL, webhooks
Cloud & DevOps EngineeringAWS, GCP, Azure, Terraform
QA & Software TestingAutomated suites, load, E2E
Legacy ModernizationStrangler-fig migrations
Cybersecurity EngineeringHardening and remediation
Data EngineeringPipelines, warehouses, reporting
Design & teams
UI/UX DesignInterfaces people finish tasks in
Prototyping & DiscoveryScope before you spend
Staff AugmentationSenior engineers on your team
Dedicated Dev TeamsA full pod, one contract
White-Label DevelopmentEngineering under your brand
Technology ArchitectureDecide once, correctly
Project ManagementDelivery you can audit
Start hereScope a build in one callBring a spec, a wireframe, or a paragraph. You leave with an architecture, a timeline, and a number.Book a scoping call
All software development services →How we price work →Talk to an engineer →
AI software
AI Application DevelopmentFull-stack AI products
AI Agent DevelopmentMulti-step autonomous agents
AI SaaS DevelopmentMulti-tenant AI products
Workflow AutomationReplace manual ops
Custom LLM AppsBranded internal assistants
LLM & data systems
Private LLM DevelopmentSelf-hosted Llama, Mistral, Qwen
RAG DevelopmentCited answers over your docs
MCP & WebMCPMake your systems agent-callable
Vector Database Setuppgvector, Pinecone, Qdrant
Document IntelligenceOCR and extraction pipelines
Vibe coding
AI-Assisted BuildsFast, with senior review
Rapid PrototypingClickable in days
Concept to CodeIdea to working software
Code Review & CleanupMake AI output shippable
Fractional AI TeamOngoing build capacity
Ready to ship?Put AI where the work isAgents, RAG, and private LLMs wired into the systems your team already uses — not a chatbot bolted to a homepage.Discuss an AI project
AI development services →AI readiness checklist →AI vs. traditional development →
Domain firstWe learn your workflow before we model itRegulated, operational, or high-volume — the constraints belong in the schema, not in a training doc.Talk about your domain
Selected workSoftware we own and operateMost agencies show screenshots. We run the products — the same stack, uptime, and on-call we hand to clients.View the portfolio
Plan smarterEstimate before you commitCost ranges, scope templates, and the questions we ask in discovery — free, no form.Open the cost calculator
Real conversationsTalk with a technical leadNo SDR, no discovery gauntlet. The person on the call is the one who scopes the build.Book a call
Open-Source Testing · pestphp

pest

Pest is a PHP testing framework emphasizing simplicity and developer experience. It provides an elegant syntax for writing tests with a focus on bringing joy back to testing in PHP.

Talk to DEV.coDiscuss Implementation
Source: GitHub — github.com/pestphp/pest
11.6k
GitHub stars
483
Forks
PHP
Primary language
MIT
License (OSI-approved)

Key facts

Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.

FieldValue
Repositorypestphp/pest
Ownerpestphp
Primary languagePHP
LicenseMIT — OSI-approved
Stars11.6k
Forks483
Open issues162
Latest releasev4.7.5 (2026-07-06)
Last updated2026-07-07
Sourcehttps://github.com/pestphp/pest

What pest is

Pest is a PHP testing framework built on top of PHPUnit, offering simplified test syntax and assertion APIs. Version 4 introduces browser testing capabilities, extending functionality beyond unit and feature testing.

Quickstart

Get the pest source

Clone the repository and explore it locally.

terminalbash
git clone https://github.com/pestphp/pest.gitcd pest# follow the project's README for install & configuration

Need it deployed, integrated, or customized instead? DEV.co ships production installs.

Best use cases

PHP Web Application Testing

Primary use case for testing PHP applications, Laravel projects, and APIs with a simplified, expressive syntax compared to raw PHPUnit.

End-to-End and Browser Testing

Pest v4 introduces browser testing, enabling teams to test user interactions and workflows in modern PHP applications without separate tooling.

Developer Experience-Focused Teams

Ideal for teams prioritizing test readability, maintainability, and developer ergonomics over raw test execution performance metrics.

Implementation considerations

  • Pest wraps PHPUnit; ensure existing PHPUnit configurations are compatible or can be migrated to Pest's DSL.
  • Browser testing in v4 requires additional setup and dependencies; confirm Dusk or equivalent headless browser integration aligns with your infrastructure.
  • Team onboarding: developers familiar with PHPUnit may need training on Pest's syntax and assertion helpers.
  • Version 4 is recent (v4.7.5 as of 2026-07-07); evaluate v4 stability for production use or remain on v3 if stability is paramount.
  • CI/CD integration: verify Pest runs correctly in your GitHub Actions, GitLab CI, or other pipeline before full adoption.

When to avoid it — and what to weigh

  • Non-PHP Ecosystems — Pest is PHP-specific; unsuitable for Node.js, Python, Go, or other runtime environments.
  • Legacy PHPUnit Deep Integration Required — If your infrastructure or compliance framework mandates raw PHPUnit without abstraction layers, migration to Pest may introduce friction.
  • High-Volume Performance Testing — Pest is optimized for clarity and expressiveness; if microsecond-level test execution performance is critical, benchmark before adopting.
  • Minimal Test Coverage Needs — For trivial projects with only a handful of tests, the overhead of framework adoption may not justify the benefits.

License & commercial use

Pest is licensed under the MIT License, a permissive OSI-approved license allowing commercial use, modification, and distribution with minimal restrictions.

MIT licensing permits commercial use in proprietary applications and services. However, the project provides no explicit commercial support or warranty. For production-critical testing infrastructure, evaluate sponsorship options or professional support availability independently.

DEV.co evaluation signals

Editorial assessment — not user reviews. Directional, with an explicit confidence level.

SignalAssessment
MaintenanceActive
DocumentationAdequate
License clarityClear
Deployment complexityLow
DEV.co fitGood
Assessment confidenceHigh
Security considerations

Pest inherits PHPUnit's security posture. No security audits, vulnerability disclosures, or penetration test data provided. As a testing framework, it is not a runtime service; however, test code execution privileges should be scoped. Evaluate dependencies and transitive supply chain risks via Composer audit.

Alternatives to consider

PHPUnit

Industry standard PHP testing framework; mature, well-documented, and required as Pest's underlying engine. Choose if you prefer minimal abstractions or lack of team experience with DSLs.

Codeception

Comprehensive testing framework supporting unit, functional, and acceptance tests with built-in browser automation. Steeper learning curve but broader out-of-the-box capabilities.

Laravel Dusk

Browser automation testing framework for Laravel applications. Complementary or alternative to Pest v4 browser testing; tightly integrated with Laravel ecosystem.

Software development agency

Build on pest with DEV.co software developers

Evaluate Pest for your PHP application. Contact our team to assess compatibility with your infrastructure, CI/CD pipeline, and team expertise.

Talk to DEV.co

Related open-source tools

Surfaced by semantic similarity across the DEV.co open-source index.

unit-testing-tipsflybirdsphpat

Related on DEV.co

Explore the category and the services that help you build with it.

Open-Source TestingWeb App DevelopmentAPI DevelopmentEnterprise SoftwareTalk to DEV.co

pest FAQ

Is Pest a replacement for PHPUnit?
No. Pest is a wrapper and DSL layer on top of PHPUnit. It simplifies syntax and test organization but relies on PHPUnit internally. You can use both together.
Can I use Pest for browser testing without additional tools?
Pest v4 introduces browser testing, but it likely requires integration with Dusk or similar headless browser drivers. Standalone capability is Unknown; requires review of v4 documentation.
What PHP versions does Pest support?
Not specified in provided data. Consult official documentation or composer.json dependencies for PHP version requirements.
Is Pest suitable for legacy PHP codebases?
Potentially yes, but migration effort depends on test structure and PHP version. Pest works with PHPUnit, so incremental adoption is possible, but team familiarity and codebase age are factors.

Work with a software development agency

Standing up pest properly takes more than a deploy. As a software development agency, DEV.co handles the open-source testing architecture, the web development on top, and the operational work underneath.

Ready to Simplify Your PHP Testing?

Evaluate Pest for your PHP application. Contact our team to assess compatibility with your infrastructure, CI/CD pipeline, and team expertise.

Talk to DEV.coSchedule a Consultation