I am planning to use Webdriver to automate testing of my extension for Chrome. Till now I have been able to start chrome browser using selenium webdriver with extension loaded. Now I am stuck as to how to select different options inside extension using webdriver. I read this post which makes sense but I am not sure how to exactly implement it in webdriver. Also since my extension is on my local machine (and not on app store), the very command mentioned on the page (chrome-extension://mbopgmdnpcbohhpnfglgohlbhfongabi/popup.html) does not work for me.
I would appreciate any thoughts and/or I could be directed to any reading material.