public void Format_Negative(DisplayFormat format, string expected)
        {
            var    coordinate = new Longitude(-79, 58, 56);
            var    formatter  = new CoordinateHtmlFormatter(coordinate);
            string actual     = formatter.Format(format);

            Assert.Equal(expected, actual);
        }
        public void Format_Positive(DisplayFormat format, string expected)
        {
            var    coordinate = new Latitude(40, 26, 46);
            var    formatter  = new CoordinateHtmlFormatter(coordinate);
            string actual     = formatter.Format(format);

            Assert.Equal(expected, actual);
        }