How to integrate simplecov with a Ruby gem using RSpec (no rails)?

Question

When adding simplecov to a rails project using RSpec, I'd place this at the very top of rails_helper.rb

require 'simplecov'

SimpleCov.start 'rails' do
  add_filter '/spec/'     

  add_group 'Controllers', 'app/controllers'
  add_group 'Models', 'app/models'
end

What is the expected location and code needed to have simplecov document the code coverage of a vanilla ruby gem?

It would be exactly the same just without the `'rails'` portion. Add this to `spec_helper.rb`. eg. (`require 'simplecov';SimpleCov.start { add_filter '/spec/'; add_group 'SomeGroup','somelib/directory';}`) — engineersmnky, Jul 11 '16 at 15:03

score 3 · Accepted Answer · answered Jul 12 '16 at 07:28

3

Make sure you have the gem in gemspec

s.add_development_dependency "simplecov"

Then at the very top of spec/spec_helper.rb

require 'simplecov'

SimpleCov.start do
  add_filter '/spec/' 
end

This should cover the relevant /lib directory.

answered Jul 12 '16 at 07:28

Epigene

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score 1 · Answer 2 · answered Jul 11 '16 at 18:48

1

As engineersmnky mentioned, the code is pretty much the same regardless of the framework.

Include the SimpleCov start at the top of your spec helper before you require any files.

answered Jul 11 '16 at 18:48

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How to integrate simplecov with a Ruby gem using RSpec (no rails)?

2 Answers2