How can dynamic content affect visual testing results?

Dynamic content plays a significant role in visual testing because it introduces variability that can lead to discrepancies in the rendered output of an application compared to the baseline images captured during previous test runs. If visual tests are not properly configured to account for this variability, they may flag differences that do not actually signify a regression or defect, resulting in false positives.

For instance, elements such as user-generated content, animations, or data that changes frequently (like timestamps or counters) can differ from one test execution to another, even if the underlying functionality of the application remains stable. By failing to accommodate these variations, the visual testing framework could mistakenly suggest that there are visually significant changes when, in fact, the application is performing as intended.

Thus, understanding and managing dynamic content is crucial for accurate visual testing outcomes, ensuring that only genuine discrepancies are identified and that testing remains effective and reliable.