yiisoft/yii2 — pull request #2351 by Ragazzo (2014-02-07 00:27:03+00:00)
Title: docs added

Added option to `WebDriver`, in some release it was changed to `false` so currently if user want to use 2 or more ui tests and login in each of them, he will be already logged in after first try, and all other tries will fail, because all tests share same cookie and session id. This option is useful to run tests in isolation.