Is there any way to run a single test in ruby under spec/features/abc_spec.rb 'header details' ? Ex:
rake test:features spec/features/abc_spec.rb 'header details'
Since you're using rspec, there are a few ways to run a single test.
First, you can just specify the line of the test bundle exec rspec ./spec/features/abc_spec.rb:xx
where xx represents the line number of 'header details'.
OR
You can create tags which is spelled out here in the Rspec docs.