How to test code coverage for Rails ERB templates?
See: How do I get coverage for view specs with rspec, rails, and simplecov?
The answer being, you can't:
https://github.com/colszowka/simplecov/issues/38
It's critical flaw that I hope someone will address.AFIK there is nothing better than simplecov for Ruby 1.9
try rake stats
it would generate a table having the coverage of each of the parts of the app