Read about cop at http://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/NotToNot
There was 34 `allow` occurences and 17 `expect` occurences, so to be consistent `allow` form was chosen. Read about cop at http://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/MessageExpectation