API Testing & CI/CD Interview Questions for Automation Testing

Headless mode or screen resolution, timing issues, environment data, missing dependencies, browser–driver version mismatch or parallel conflicts. Check logs and failure screenshots and make waits robust.

200 OK, 201 Created, 204 No Content, 400 Bad Request, 401 Unauthorized, 403 Forbidden, 404 Not Found, 500 Internal Server Error.

given().baseUri(url) .when().get("/users/1") .then().statusCode(200).body("id", equalTo(1));

POST creates a resource, PUT replaces the whole resource (idempotent) and PATCH updates part of it.

Code pushed to Git → Jenkins job triggers (webhook or schedule) → mvn clean test with the suite XML → reports and screenshots published → notifications on Slack/email → failures triaged before release.