Blog

Postman in Depth: Collections, Environments, Variable Scopes, Scripts, Tests, Mock Servers and the CLI

Keeping the Postman collection in the repo and running it in CI with Newman or the Postman CLI is the most robust answer to the single-user free plan since March 2026. A hand-written v2.1 collection for Bookstore: OpenAPI import, variable scope precedence, shared versus local values, a pre-request script that gets the token once, pm.test, an iteration failing on a data file, a JUnit report, and why the Postman CLI's local mock returns useless data.