testing

name	testing
description	Use when: implementing testing in CodeIgniter projects. Provides a quick checklist for best practices and acceptance testing at each stage.

Testing Skill

This skill guides you through best practices for testing in CodeIgniter, ensuring acceptance testing at each implementation stage.

Quick Checklist

1. Set Up Testing Environment

   • Install PHPUnit via Composer: composer require --dev phpunit/phpunit
   • Configure phpunit.xml in the project root for test suites

2. Unit Testing

   • Create tests for models in tests/unit/
   • Test business logic, data validation, and model methods

3. Integration Testing

   • Write tests for controllers and routes in tests/integration/
   • Use CodeIgniter's TestResponse for HTTP request testing

4. Acceptance Testing

   • Perform manual acceptance testing for each feature
   • Test complete user workflows: user login, adding websites, tracking page loads
   • Document test scenarios and results

5. Run Tests at Each Stage

   • Execute tests after implementing each feature: vendor/bin/phpunit
   • Ensure all tests pass before merging code
   • Integrate with CI/CD pipelines for automated testing

6. Best Practices

   • Aim for high test coverage (>80%)
   • Test edge cases, error handling, and security scenarios
   • Mock external services and databases where appropriate
   • Follow Test-Driven Development (TDD) principles

This checklist is tailored for CodeIgniter 4's built-in testing support with PHPUnit.