You can get ancestors that implement instance method.

$ gem install ancestors_that_implement_instance_method

Context:

module Foo
  def target_method
    :target_method_of_foo
  end
end

module Bar
  # does not implement #target_method
end

module Buz
  def target_method
    :target_method_of_buz
  end
end

class Klass
  include Foo
  include Bar
  include Buz
end

Then:

require 'ancestors_that_implement_instance_method'
Klass.ancestors_that_implement_instance_method(:target_method) #=> [Foo, Buz]

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/ngtk/ancestors_that_implement_instance_method. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.