public void GetFirstDateOfQuarter()
{
Assert.AreEqual(new DateTime(2018, 4, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 4, QuarterPeriod.First));
Assert.AreEqual(new DateTime(2018, 7, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 4, QuarterPeriod.Second));
Assert.AreEqual(new DateTime(2018, 10, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 4, QuarterPeriod.Third));
Assert.AreEqual(new DateTime(2019, 1, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 4, QuarterPeriod.Fourth));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 1, QuarterPeriod.First));
Assert.AreEqual(new DateTime(2018, 4, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 1, QuarterPeriod.Second));
Assert.AreEqual(new DateTime(2018, 7, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 1, QuarterPeriod.Third));
Assert.AreEqual(new DateTime(2018, 10, 1), DateTimeUtility.GetFirstDateOfQuarter(2018, 1, QuarterPeriod.Fourth));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 1, 1), 4));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 3, 31), 4));
Assert.AreEqual(new DateTime(2018, 4, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 4, 1), 4));
Assert.AreEqual(new DateTime(2018, 4, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 6, 30), 4));
Assert.AreEqual(new DateTime(2018, 7, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 7, 1), 4));
Assert.AreEqual(new DateTime(2018, 7, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 9, 30), 4));
Assert.AreEqual(new DateTime(2018, 10, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 10, 1), 4));
Assert.AreEqual(new DateTime(2018, 10, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 12, 31), 4));
Assert.AreEqual(new DateTime(1, 1, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(1, 1, 1), 4));
Assert.AreEqual(new DateTime(9999, 10, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(9999, 12, 31), 4));
Assert.AreEqual(new DateTime(2017, 11, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 1, 1), 2));
Assert.AreEqual(new DateTime(2018, 2, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 3, 31), 2));
Assert.AreEqual(new DateTime(2018, 2, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 4, 1), 2));
Assert.AreEqual(new DateTime(2018, 5, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 6, 30), 2));
Assert.AreEqual(new DateTime(2018, 5, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 7, 1), 2));
Assert.AreEqual(new DateTime(2018, 8, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 9, 30), 2));
Assert.AreEqual(new DateTime(2018, 8, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 10, 1), 2));
Assert.AreEqual(new DateTime(2018, 11, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 12, 31), 2));
// Assert.AreEqual(new DateTime(0, 11, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(1, 1, 1), 2));
Assert.AreEqual(new DateTime(9999, 11, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(9999, 12, 31), 2));
}
public void GetFirstDateOfQuarter_Failed3()
{
Assert.AreEqual(DateTime.MinValue, DateTimeUtility.GetFirstDateOfQuarter(new DateTime(1, 1, 1), 2));
}
public void GetFirstDateOfQuarter_Failed2()
{
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 1, 1), 13));
}
public void GetFirstDateOfQuarter_Kind()
{
Assert.AreEqual(DateTimeKind.Unspecified, DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 1, 1), 4).Kind);
Assert.AreEqual(DateTimeKind.Local, DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Local), 4).Kind);
Assert.AreEqual(DateTimeKind.Utc, DateTimeUtility.GetFirstDateOfQuarter(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Utc), 4).Kind);
}