System.Tests.DateTimeTests.Parse_SpecialCultures C# (CSharp) Method

        public static void Parse_SpecialCultures(string cultureName)
        {
            // Test DateTime parsing with cultures which has the date separator and time separator are same
            CultureInfo cultureInfo;
            try
            {
                cultureInfo = new CultureInfo(cultureName);
            }
            catch (CultureNotFoundException)
            {
                // Ignore un-supported culture in current platform
                return;
            }

            var dateTime = new DateTime(2015, 11, 20, 11, 49, 50);
            string dateString = dateTime.ToString(cultureInfo.DateTimeFormat.ShortDatePattern, cultureInfo);

            DateTime parsedDate;
            Assert.True(DateTime.TryParse(dateString, cultureInfo, DateTimeStyles.None, out parsedDate));
            if (cultureInfo.DateTimeFormat.ShortDatePattern.Contains("yyyy") || HasDifferentDateTimeSeparators(cultureInfo.DateTimeFormat))
            {
                Assert.Equal(dateTime.Date, parsedDate);
            }
            else
            {
                // When the date separator and time separator are the same, DateTime.TryParse cannot 
                // tell the difference between a short date like dd.MM.yy and a short time
                // like HH.mm.ss. So it assumes that if it gets 03.04.11, that must be a time
                // and uses the current date to construct the date time.
                DateTime now = DateTime.Now;
                Assert.Equal(new DateTime(now.Year, now.Month, now.Day, dateTime.Day, dateTime.Month, dateTime.Year % 100), parsedDate);
            }

            dateString = dateTime.ToString(cultureInfo.DateTimeFormat.LongDatePattern, cultureInfo);
            Assert.True(DateTime.TryParse(dateString, cultureInfo, DateTimeStyles.None, out parsedDate));
            Assert.Equal(dateTime.Date, parsedDate);

            dateString = dateTime.ToString(cultureInfo.DateTimeFormat.FullDateTimePattern, cultureInfo);
            Assert.True(DateTime.TryParse(dateString, cultureInfo, DateTimeStyles.None, out parsedDate));
            Assert.Equal(dateTime, parsedDate);

            dateString = dateTime.ToString(cultureInfo.DateTimeFormat.LongTimePattern, cultureInfo);
            Assert.True(DateTime.TryParse(dateString, cultureInfo, DateTimeStyles.None, out parsedDate));
            Assert.Equal(dateTime.TimeOfDay, parsedDate.TimeOfDay);
        }