Rails Testing

rails-testing

Help with Rails testing including unit tests, integration tests, fixtures, and debugging test failures. Use when working on tests or debugging test issues.

etewiah/property_web_builder·0installs644starsDebugging

SKILL.md

Full skill instructions

Rails Testing

Instructions

When helping with Rails testing:

Understand the test structure
- Check existing tests in test/ directory to understand project conventions
- Look for test patterns in similar files (models, controllers, etc.)
- Respect the project's test organization and naming conventions
Running tests
- Run all tests: bin/rails test
- Run specific file: bin/rails test test/models/user_test.rb
- Run specific test: bin/rails test test/models/user_test.rb:5 (line number)
- Run with verbose output: bin/rails test -v
- Use --fail-fast to stop on first failure: bin/rails test --fail-fast
Test types in Rails
- Models: Test business logic, validations, associations
- Controllers: Test request/response, status codes, redirects, instance variables
- Integration Tests: Test full workflows across multiple components
- Fixtures: Use for test data setup
Writing effective tests
- Use descriptive test names: test_should_create_valid_user
- Test both success and failure cases
- Keep tests focused and isolated
- Use fixtures for shared test data
- Clean up side effects after tests
Debugging test failures
- Read error messages carefully - they usually point to the issue
- Check if test data is set up correctly (fixtures, setup methods)
- Verify assertions match the actual behavior
- Use puts or p to inspect values
- Check test isolation - tests shouldn't depend on each other
Test database
- Rails uses a separate test database
- Run migrations: bin/rails db:test:prepare
- Check test/fixtures/ for test data

Examples

When user asks: "How do I test this model?" → Create a model test in test/models/ following existing patterns, test validations and associations

When user asks: "Why is this test failing?" → Analyze the error, check test data setup, verify assertions, suggest fixes

When user asks: "Add tests for this controller" → Create controller tests in test/controllers/, test CRUD actions and edge cases

When user asks: "How do I set up test data?" → Suggest fixtures in test/fixtures/ or setup methods in the test file

Install skill

Copy and run in your terminal

npx -y skills add etewiah/property_web_builder --skill rails-testing

View on GitHub

.claude/skills/rails-testing

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