A method and apparatus for performing a diagnostic of a web based client server application. The web based client server application comprising a web application code, a web application framework, a web server, and a web client. The method comprising an act of collecting diagnostic data associated with the execution of the web application code, wherein the method of performing the diagnostic of the web based client server application adapts to a type of the web server. In another embodiment, marking the beginning and/or end of a diagnostic session, during which diagnostic data associated with the execution of the web application code is collected, is performed based on a launch of the web client. In a further embodiment, determining information about the web application code at least partially based on an interaction with the web application framework. In another embodiment, determining a type of the web server and starting the web server at least partially based on the determined type of the web server. In another embodiment, performing a diagnostic including code profiling, code coverage, and/or unit tests.