Validate APIs During Your Playwright Tests with Postman
Blog post from Postman
Playwright, a popular frontend test runner, is widely used for its realistic API traffic during tests, yet many teams neglect the underlying API validation, risking undetected issues until production. To address this, Postman introduces new CLI commands and a Playwright plugin that validate APIs in tandem with Playwright's UI tests. This integration allows teams to capture and validate API traffic without altering their existing workflows, providing insights into API coverage, contract drift, and potential gaps, while filtering out irrelevant noise. The setup involves linking a GitHub repo to a Postman workspace, installing necessary tools, and configuring network capture, enabling comprehensive API validation alongside UI testing. This system not only aids in catching false positives and silent degradations but also facilitates the creation of API collections from captured traffic, helping teams build a robust API contract suite over time.
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