public void Returns_Correct_Timezone_Definition()
{
// Arrange
var expected = new StringBuilder()
.AppendLine("BEGIN:VTIMEZONE")
.AppendLine("TZID:Europe/London")
.AppendLine("BEGIN:STANDARD")
.AppendLine("TZNAME:GMT")
.AppendLine("DTSTART:19710101T020000")
.AppendLine("TZOFFSETFROM:+0100")
.AppendLine("TZOFFSETTO:+0000")
.AppendLine("RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU")
.AppendLine("END:STANDARD")
.AppendLine("BEGIN:DAYLIGHT")
.AppendLine("TZNAME:BST")
.AppendLine("DTSTART:19710101T010000")
.AppendLine("TZOFFSETFROM:+0000")
.AppendLine("TZOFFSETTO:+0100")
.AppendLine("RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU")
.AppendLine("END:DAYLIGHT")
.AppendLine("END:VTIMEZONE")
.ToString();
// Act
var result = VCalendar.GetTimezoneGmt();
// Assert
Assert.Equal(expected, result);
}
