private DateTime ExtractPostDate(string postDate)
        {
            var split = postDate.Split(' ');
            var day   = split[1];

            day = day.Substring(0, day.Length - 2);
            var month = EnglishMonths.Map(split[2]);
            var year  = split[3];

            return(new DateTime(int.Parse(year), month, int.Parse(day)));
        }
        public void WithValidMonth_ReturnExpectedInteger(string month, int expected)
        {
            var actual = EnglishMonths.Map(month);

            Assert.Equal(expected, actual);
        }
        public void WithInvalidMonth_ThrowsException()
        {
            var month = "Decenuary";

            Assert.Throws <ArgumentException>(() => EnglishMonths.Map(month));
        }