rspec-service-testing
RSpec Service Testing
Use this skill when writing tests for service classes under spec/services/.
Core principle: Test the public contract (.call, .find, .search), not internal implementation. Use instance_double for isolation, create for integration.
Workflow: Write → Run → Verify → Fix
1. WRITE: Write the spec (happy path + error cases + edge cases)
2. RUN: bundle exec rspec spec/services/your_service_spec.rb
3. VERIFY: Confirm failures are for the right reason (not a typo or missing factory)
4. FIX: Implement or fix until the spec passes
5. SUITE: bundle exec rspec spec/services/ — verify no regressions
DO NOT implement the service before step 1 is written and failing for the right reason.
Quick Reference
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