API Testing with Postman

Test an online shop's API without its pages: read its OpenAPI docs, send and chain requests in Postman, tell a 401 from a 403, check status, body and schema automatically, run a collection over a data file, and make a first call to SOAP, GraphQL, gRPC and WebSocket services. For learners who can read an HTTP request in DevTools; no coding needed. Course 6 of the QA Engineer Path.

Course 6 of 13 in the QA Engineer Path

12 lessons · 161 stepscertificate

What you will learn

Send, chain and check API requests, and report an API bug.

Course program

The full outline. Lessons open when the course does.

What an API is and your first request

What an API is: REST, JSON, XML11 steps

First requests in Postman15 steps

Contracts, methods and access

Reading API docs and cURL14 steps

Methods and request chains14 steps

Authentication and authorization14 steps

Checks that run themselves

Checks in Postman14 steps

Variables, environments and data files12 steps

Beyond REST, and the review

Door: SOAP11 steps

Door: GraphQL15 steps

Door: gRPC12 steps

Door: WebSocket13 steps

Review: the gateway collection16 steps

How this course compares with others

Section: QA Engineer Path

Next on the path: Databases and SQL for Testers

The author

Artsiom Rusau – QA engineer and course author. He has tested software since 2019 and has taught software testing since 2020.

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