Good tip on adding groups to Coverage report. Also, I didn't know about to filter not used files, as channels stuff. But I wanted to remove Channels, Jobs and Libraries tabs from report. I found this way looking at [Coverage source](https://github.com/colszowka/simplecov/blob/master/lib/simplecov.rb) ``` SimpleCov.start 'rails' do # add filter removes files from coverage, but not tabs in report add_filter 'app/channels/' add_filter 'vendor/' add_filter 'app/jobs/' # remove tabs in report groups.each do |group| groups.delete(group.first) if %w(Channels Jobs Libraries).include? group.first end # add my onw tabs in report add_group 'Datatables', 'app/datatables' add_group 'Policies', 'app/policies' add_group 'Presenters', 'app/presenters' end ```

Thank you for the video! Love your stuff In RecallTest, and also for PriceCalculator and WeightCalculator I'd argue to not rely on implicit fixture setup and to create explicit setup at the top of the test file. Otherwise if a new person is coming to fix a bug without any knowledge of relations set in fixtures — it will be a pain for him to understand if the test really checks a valid return value :)