Working with documentation (Swagger) and Postman.

Swagger (OpenAPI) and Postman are key tools for working with APIs.

Swagger:

• Used for documenting REST APIs.
• Allows describing the structure of requests, responses, parameters, data schemas.
• Based on the specification, you can generate client code, server stubs, tests.
• Helps QA understand what endpoints exist and what data is expected.

Postman:

• A tool for API testing.
• Allows creating request collections, configuring parameters, headers, body.
• Can automate tests, verify responses, create scenarios.
• Supports importing Swagger specifications for quick test creation.

Practical application:

• First, study the Swagger documentation to understand the API.
• Import the specification into Postman.
• Create test requests, verify the correctness of responses.
• Write automatic checks (assertions) in Postman.
• Use Postman Collection Runner or integrate with CI for automation.

This approach ensures transparency, reproducibility, and automation of API testing.