public void GetFirstDateOfWeek_Kind()
{
Assert.AreEqual(DateTimeKind.Unspecified, DateTimeUtility.GetFirstDateOfWeek(new DateTime(2018, 1, 1)).Kind);
Assert.AreEqual(DateTimeKind.Local, DateTimeUtility.GetFirstDateOfWeek(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Local)).Kind);
Assert.AreEqual(DateTimeKind.Utc, DateTimeUtility.GetFirstDateOfWeek(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Utc)).Kind);
}
public void GetFirstDateOfWeek_Failed()
{
Assert.AreEqual(DateTime.MinValue, DateTimeUtility.GetFirstDateOfWeek(new DateTime(1, 1, 1)));
}
public void GetFirstDateOfWeek()
{
Assert.AreEqual(new DateTime(2017, 12, 31), DateTimeUtility.GetFirstDateOfWeek(new DateTime(2018, 1, 1)));
}