module Reek::Configuration::ConfigurationValidator

def key_to_smell_detector(key)
  Reek::SmellDetectors.const_get key
end

def smell_type?(key)
  Reek::SmellDetectors.const_defined? key
rescue NameError
  false
end

def with_valid_directory(path)
  directory = Pathname.new path.to_s.chomp('/')
  if directory.file?
    raise Errors::ConfigFileError,
          "`#{directory}` is supposed to be a directory but is a file"
  end
  yield directory if block_given?
end