Polling Testing
Polling testing is a software testing technique where a system repeatedly checks for a specific condition or state change at regular intervals, rather than relying on event-driven notifications. It is commonly used in scenarios where asynchronous operations, external dependencies, or real-time updates need to be verified, such as waiting for API responses, file uploads, or UI changes. This approach helps ensure that tests are robust and can handle delays or unpredictable timing in distributed systems.
Developers should use polling testing when dealing with asynchronous processes, external services, or dynamic content where exact timing cannot be guaranteed, such as in integration tests, end-to-end tests, or when testing APIs with latency. It is particularly useful in continuous integration/continuous deployment (CI/CD) pipelines to validate that systems reach expected states within reasonable timeframes, reducing flaky tests and improving reliability. For example, it can be applied to wait for a database to sync, a web page to load, or a background job to complete.