Testing Laravel Applications with Pest: Patterns I Actually Use
After writing hundreds of Pest tests across production Laravel apps, these are the patterns that have saved me the most debugging time.
Test factories, not just models
Factory states are underused. Instead of manually setting up model attributes in every test, I define named states that express intent. User::factory()->admin()->suspended() reads like documentation and keeps tests readable when the attribute structure changes.
Use datasets for repetitive cases
Pest datasets replace the copy-paste test pattern cleanly. When testing validation, I pass a dataset of invalid inputs and assert the same error on each. One test definition, a dozen cases, all named automatically from the dataset keys.
Test the contract, not the implementation
I test what my code does, not how it does it. If a controller stores a contact message in the database and sends a notification, I assert both outcomes — not that a specific private method was called. Implementation tests break on refactors; contract tests survive them.
Feature tests for the full request cycle
Most of my tests are feature tests that boot the full Laravel application and exercise a real HTTP request. They hit the actual middleware stack, validation, controller, and database. This catches integration failures that unit tests miss entirely.