class Shoulda::Matchers::ActiveRecord::DefineEnumForMatcher

def expected_instance_methods 

def expected_instance_methods
  methods = expected_enum_value_names.map do |name|
    [expected_prefix, name, expected_suffix].
      select(&:present?).
      join('_')
  end
  methods.flat_map do |m|
    ["#{m}?".to_sym, "#{m}!".to_sym]
  end
end