A practical guide covering six common REST API testing scenarios using Postman and Newman. Topics include writing test assertions in the Tests tab, chaining requests with environment variables (e.g., capturing JWT tokens and auto-generated IDs), parameterizing base URLs across environments, data-driven testing with CSV files, simple load testing via Newman's iteration flags, and running collections as smoke tests in a CI/CD pipeline. All examples are demonstrated against a Spring Boot JWT-secured Todo API.
Table of contents
1. Call an API and assert response2. Trigger a series of API calls to simulate some user flow3. Parameterize variables based on the environment4. Trigger API request with different inputs and assert expected responses5. Load testing6. Run Postman collection to do Smoke Test from Build PipelineSort: