Laravel testing

Skill ComeOnOliver/skillshub/skills/HoangNguyen0403/agent-skills-standard/laravel-testing

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npx -y skills add ComeOnOliver/skillshub --skill laravel-testing

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Automated testing standards with Pest and PHPUnit. Use when writing Pest or PHPUnit feature/unit tests in Laravel applications. (triggers: tests/**/*.php, phpunit.xml, feature, unit, mock, factory, sqlite)

SKILL.md

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Laravel Testing

Priority: P1 (HIGH)

Structure

tests/
├── Feature/            # Integration/HTTP tests
├── Unit/               # Isolated logic tests
└── TestCase.php

Implementation Guidelines

Pest & Modern Testing

Feature Tests: Use uses(RefreshDatabase::class) at the top of Pest files. Example: it('creates post', fn() => $this->postJson('/api/posts', [...]) verifies database rolled back after each test.
Transactions: For faster but non-truncating isolation, use DatabaseTransactions.

Mocking & External Services

Service Mocking: Use $this->mock(PaymentService::class) with shouldReceive('charge')->once()->with(100) to assert interaction.
Loose Verification: Use $this->spy() for behavior validation without strict ordering.
Network Safety: Never make real network calls in automated tests.

Test Data & Infrastructure

Factories: Create test data via Post::factory()->count(3)->create(['user_id' => $id]).
Definition: Implement definition(): array using fake() in factory classes.
Generation: Run php artisan make:factory PostFactory --model=Post.
SQLite Support: In phpunit.xml, set DB_CONNECTION' value='sqlite' and DB_DATABASE' value=':memory:' for in-memory, lightning-fast tests.

HTTP Assertions

Fluent Assertions: Chain assertStatus(201), assertJson(['data' => ...]), and assertJsonStructure.
Header Verification: Use assertHeader('Content-Type', 'application/json').

Anti-Patterns

No real network calls: Always mock or stub external services.
No state leakage between tests: Use RefreshDatabase trait.
No DB::table()->insert(): Never DB::table()->insert() raw data in tests — use Eloquent Factories instead.
No heavy computations in unit tests: Move to Feature layer.

References

Testing & Mocking Guide

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