public void ExpiryEndOfQuarterTests()
{
var endOfQuarterList = new List <DateTime>();
var current = new DateTime(2019, 1, 1);
var end = new DateTime(2020, 1, 1);
while (current < end)
{
var endOfQuarter = Expiry.EndOfQuarter(current);
endOfQuarterList.Add(endOfQuarter);
Assert.AreEqual(1, endOfQuarter.Day);
Assert.AreEqual(1, endOfQuarter.Month % 3);
Assert.Greater(endOfQuarter, current);
current = current.AddDays(1);
}
var actual = endOfQuarterList.Distinct().Count();
Assert.AreEqual(4, actual);
}