public void Add_Day()
{
var startDate = new ApproximateDateTime();
startDate.AddDays(2);
Assert.Equal(startDate.Day, 3);
}
public void Subtract_Day()
{
var startDate = new ApproximateDateTime();
startDate.AddDays(-3);
Assert.Equal(28, startDate.Day);
Assert.Equal(12, startDate.Month);
Assert.Equal(-1, startDate.Year);
}
