Baselines
Setting the baseline
VisualTest first takes a baseline screen capture, and then compares screen captures in subsequent test runs to that baseline. Over time, the baseline is updated in the following ways:
Added - new images added to the application under test
Passed - images that automatically passed the last test run
Accepted - images from the last test run marked as Accepted by reviewers
Use consistent baselines
VisualTest looks for a baseline to compare against by searching for the following variables:
Image name
Image type
Fullpage
Viewport
Element
Operating system
Browser type
Screen resolution
If any of the above change, the screen capture will be treated as a new baseline to compare against for that combination of variables. For this reason, it is important to stay consistent in the way you name images.