In practice, we usually also need another tool to provide an API to control the browser (e.g., ChromeDriver).

“System tests” is a common naming for automated end-to-end tests in the Rails world. Before Rails adopted this name, we used such variations as feature tests, browser tests

This poses a few problems for automation. In some environments, there may be no graphical display available, or it may be desirable to not have the browser appear at all when being controlled.