public void Finds_the_number_of_sundays_in_march_2020()
{
var start = new DateTime(2020, 3, 1);
var end = new DateTime(2020, 3, 31);
Question19.CountingSundays(start, end).Should().Be(5);
}
public void Finds_the_number_of_sundays_in_the_20th_century()
{
var start = new DateTime(1901, 1, 1);
var end = new DateTime(2000, 12, 31);
Question19.CountingSundays(start, end).Should().Be(5217);
}