End-to-end testing best practices with Postman mock servers
Blog post from Postman
End-to-end (E2E) testing focuses on verifying complete user workflows by simulating real-world scenarios from an end user's perspective, and while essential, it is only one part of a comprehensive testing strategy that includes unit and integration tests. E2E tests are often the slowest due to their broad scope, especially when dealing with external dependencies like third-party APIs, which can present challenges such as lack of control over the API's code or server quality. To address these challenges, Postman offers a solution by allowing users to create mock servers that simulate API responses, enabling controlled testing environments without relying on external servers. By using Postman's mock servers, testers can create collections with examples for various scenarios, such as handling HTTP errors or paginated endpoints, which can be managed programmatically using the Postman API. This approach allows for flexible and thorough testing of E2E scenarios without altering the actual API code, providing a practical method for overcoming the limitations posed by external dependencies in testing workflows.
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