simplecov

https://github.com/simplecov-ruby/simplecov

Ruby

Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

SimpleCov::Configuration#use_merging

Defines whether to use result merging so all your test suites (test:units, test:functionals, cucumber, ...)
are joined and combined into a single coverage report

Source | Google | Stack overflow

Edit

git clone [email protected]:simplecov-ruby/simplecov.git

cd simplecov

open sig/simplecov.rbs

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-SimpleCov--Configuration-use_merging-for-pr

# Commit to git

git add sig/simplecov.rbsgit commit -m "better docs for SimpleCov::Configuration#use_merging"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-SimpleCov--Configuration-use_merging-for-pr

hub pull-request

# Celebrate!