Additional Notes
What testing benefit comes from a stable `PaymentGateway` seam?
Track: Java
Topic: Design Patterns
Focus: Factory Pattern
Java: Factory Pattern
Answer
Checkout can be tested against one contract while vendor mapping stays isolated in adapter tests.
A clean integration boundary reduces the blast radius of third-party complexity. Application tests stay focused on checkout behavior, while provider-specific tests concentrate on request translation, error handling, and SDK interaction.
A clean integration boundary reduces the blast radius of third-party complexity. Application tests stay focused on checkout behavior, while provider-specific tests concentrate on request translation, error handling, and SDK interaction.
Topics: Design Patterns Factory Pattern Java