API testing
Contract Tests for Messy Handoffs
Keep mobile, web, and BFF layers honest when payloads bounce between teams every sprint.
Evening cohort 5 evenings + async code reviews integration
₩890,000 informational tuition
See Money-Back Policy for eligibility windows.
Program narrative
Focuses on consumer-driven contracts, message fixtures, and how to stage partial failures without burning trust with partner squads.
What is included
- Fixture factory patterns with seeded edge payloads
- Versioning etiquette when multiple consumers exist
- Lightweight canary using mirrored traffic samples
- Documentation pack for stakeholder sign-off
- Pair sessions decoding protobuf vs JSON quirks
- Checklist for breaking changes vs safe refactors
- Office hours with a former mobile release captain
Outcomes you can evidence
- ◆ Stand up a contract suite that survives two-team disagreements
- ◆ Ship a communication template for risky merges
- ◆ Instrument a smoke lane that respects data residency
FAQ
Is gRPC included?
We reference it in readings; exercises stay HTTP/JSON for portability.
What if our partners refuse contracts?
We role-play negotiation scripts and partial observability fallbacks.
What is excluded?
No legal review of partner agreements—only engineering communication patterns.
Experience notes
“The fixture factory pattern stopped our QA team from copy-pasting 200-line JSON blobs.”