module RuboCop::Cop::RSpec::InflectedHelper

def to_predicate_matcher(name)
  case name = name.to_s
  when 'is_a?'
    'be_a'
  when 'instance_of?'
    'be_an_instance_of'
  when 'include?', 'respond_to?'
    name[0..-2]
  when /^has_/
    name.sub('has_', 'have_')[0..-2]
  else
    "be_#{name[0..-2]}"
  end
end