how to change the value of user.identity.name
<p>I think this is a very fundamental question - but i am not sure how to do it.</p>

<p>I am trying to test an application with different user login ID's (because these users have different roles).The application uses the login information of the system user and has no login of its own. The <code>user.identity.name</code> is used to get the value. However I would like to override this value to test for different user logins. How can I do this? </p>
