Enlisted below are the possible scenarios that can be performed to fully test the login feature of any application :
* Check the input fields i.e. Username and password with both valid and invalid values.
* Try entering valid email id with an incorrect password and also enter an invalid email and valid password. Check for the proper error message displayed.
* Enter valid credentials and get logged in to the application. Close and reopen the browser to check if still logged in.
* Enter the application after logging in and then again navigate back to the login page to check whether the user is asked again to log in or not.
* Sign in from one browser and open the application from another browser to verify whether you are logged into another browser also or not.
* Change password after logging into the application and then try to login with that old password.
There are few other possible scenarios as well which can be tested.
