Definitely, we do write test. I like selenium , too. I use the awesome extension they have in Firefox dev edition. Testing the FE code is just as important as user exp testing IMHO. Also, I really like using phantom with Angular, Jasmine with Karma as test runner. The output shows up via Jasmine's HTML reporter and that's nice too. Here is a link to a sample run:
and here is a link to the tests:
This is a screenshot of the selenium extension:
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