Building a Mock API with Postman
Planning the Mock API
Start by sketching the endpoints your mock API needs to support - for example, a set of CRUD routes for a single resource like "products" or "users."
Building the Collection
| Step | Action |
|---|---|
| 1 | Create requests for each endpoint (GET, POST, PUT, DELETE) |
| 2 | Save a realistic example response for each request |
| 3 | Add multiple examples per request for different scenarios (success, error) |
| 4 | Generate the mock server from the collection |
Testing Against the Mock
Once live, the mock server's URL can be used by frontend apps or other services exactly like a real API, letting development continue in parallel with backend work.
Maintaining the Mock
As the real API evolves, updating the saved examples keeps the mock API in sync, so it stays a reliable stand-in during development.
With the pieces from across this course - auth, scripting, mocking, and CI/CD - let's bring it all together by automating a full e-commerce API workflow.
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