Teststyle lets you perform static analysis of your tests to make sure they conform to conventions and best practices. For any guidelines you have set in the Project, Teststyle will inform you if they are not being upheld by displaying information, warnings and errors in the Problems View. Elements in the Project where warnings and errors are present are decorated with the yellow warning symbol and the red error cross.
The Teststyle guidelines available reflect best practices and conventions from working in a variety of Projects. They include guidelines on naming conventions to make tests easy to read, easy to incorporate into build processes, structural conventions for your Projects and test design guidelines to make tests maintainable and understandable.