public void GetFirstDateOfMonth()
{
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfMonth(2018, 1));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfMonth(new DateTime(2018, 1, 1)));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfMonth(new DateTime(2018, 1, 10)));
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfMonth(new DateTime(2018, 1, 31)));
}
public void GetFirstDateOfMonth_Failed2()
{
Assert.AreEqual(new DateTime(2018, 1, 1), DateTimeUtility.GetFirstDateOfMonth(2018, 0));
}
public void GetFirstDateOfMonth_Kind()
{
Assert.AreEqual(DateTimeKind.Unspecified, DateTimeUtility.GetFirstDateOfMonth(new DateTime(2018, 1, 1)).Kind);
Assert.AreEqual(DateTimeKind.Local, DateTimeUtility.GetFirstDateOfMonth(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Local)).Kind);
Assert.AreEqual(DateTimeKind.Utc, DateTimeUtility.GetFirstDateOfMonth(new DateTime(2018, 1, 1, 0, 0, 0, DateTimeKind.Utc)).Kind);
}