public void DataTypes_DateHelpers_yesterday()
{
Assert.AreEqual(new System.DateTime(2016, 12, 31), TimexDateHelpers.Yesterday(new System.DateTime(2017, 1, 1)));
Assert.AreEqual(new System.DateTime(2017, 1, 1), TimexDateHelpers.Yesterday(new System.DateTime(2017, 1, 2)));
Assert.AreEqual(new System.DateTime(2017, 2, 28), TimexDateHelpers.Yesterday(new System.DateTime(2017, 3, 1)));
Assert.AreEqual(new System.DateTime(2016, 2, 28), TimexDateHelpers.Yesterday(new System.DateTime(2016, 2, 29)));
}
public void DataTypes_DateHelpers_invariance()
{
var d = new System.DateTime(2017, 8, 25);
var before = d;
TimexDateHelpers.Tomorrow(d);
TimexDateHelpers.Yesterday(d);
TimexDateHelpers.DatePartEquals(new System.DateTime(), d);
TimexDateHelpers.DatePartEquals(d, new System.DateTime());
TimexDateHelpers.IsNextWeek(d, new System.DateTime());
TimexDateHelpers.IsNextWeek(new System.DateTime(), d);
TimexDateHelpers.IsLastWeek(new System.DateTime(), d);
TimexDateHelpers.WeekOfYear(d);
var after = d;
Assert.AreEqual(after, before);
}
