# File lib/mocha/parameter_matchers/has_entry.rb, line 43
    def has_entry(*options)
      case options.length
      when 1
        case options[0]
        when Hash
          case options[0].length
          when 0
            raise ArgumentError, 'Argument has no entries.'
          when 1
            key, value = options[0].first
          else
            raise ArgumentError, 'Argument has multiple entries. Use Mocha::ParameterMatchers#has_entries instead.'
          end
        else
          raise ArgumentError, 'Argument is not a Hash.'
        end
      when 2
        key, value = options
      else
        raise ArgumentError, 'Too many arguments; use either a single argument (must be a Hash) or two arguments (a key and a value).'
      end
      HasEntry.new(key, value)
    end