public void GetFirstDateOfYear()
{
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfYear(2018));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfYear(new DateTime(2018, 1, 1)));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfYear(new DateTime(2018, 12, 31)));
}
public void GetFirstDateOfYear_Failed()
{
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfYear(0));
}
public void GetFirstDateOfYear_Kind()
{
Assert.AreEqual(DateTimeKind.Unspecified, DateTimeUtility.GetFirstDateOfYear(new DateTime(2018, 1, 1)).Kind);
Assert.AreEqual(DateTimeKind.Local, DateTimeUtility.GetFirstDateOfYear(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Local)).Kind);
Assert.AreEqual(DateTimeKind.Utc, DateTimeUtility.GetFirstDateOfYear(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Utc)).Kind);
}
