public void FloorDateTimeHardTest()
{
var sut = new DateTime(1966, 7, 14, 13, 46, 15, 316);
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Milliseconds, 250);
var expected = new DateTime(1966, 7, 14, 13, 46, 15, 250);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Seconds, 5);
var expected = new DateTime(1966, 7, 14, 13, 46, 15);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Minutes, 10);
var expected = new DateTime(1966, 7, 14, 13, 40, 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Hours, 3);
var expected = new DateTime(1966, 7, 14, 12, 0, 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Days, 7);
var expected = new DateTime(1966, 7, 8, 0, 0, 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Months, 3);
var expected = new DateTime(1966, 7, 1, 0, 0, 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Years, 10);
var expected = new DateTime(1960, 1, 1, 0, 0, 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
try
{
DateTimeUtilities.FloorDateTime(sut, DateTimePart.Weeks, 1);
Assert.Fail("An exception should have been thrown.");
}
catch (NotSupportedException)
{
}
catch (Exception ex)
{
Assert.Fail($"The {ex.GetType()} type of exception was not expected!");
}
}
}
public void FloorDateTimeNow()
{
var sut = DateTime.Now;
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Milliseconds, 250);
var expected = new DateTime(sut.Year, sut.Month, sut.Day, sut.Hour, sut.Minute, sut.Second, 250 * (sut.Millisecond / 250));
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Seconds, 5);
var expected = new DateTime(sut.Year, sut.Month, sut.Day, sut.Hour, sut.Minute, 5 * (sut.Second / 5));
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Minutes, 10);
var expected = new DateTime(sut.Year, sut.Month, sut.Day, sut.Hour, 10 * (sut.Minute / 10), 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Hours, 3);
var expected = new DateTime(sut.Year, sut.Month, sut.Day, 3 * (sut.Hour / 3), 0, 0);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Days, 7);
var expected = new DateTime(sut.Year, sut.Month, 1 + 7 * ((sut.Day - 1) / 7));
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Months, 3);
var expected = new DateTime(sut.Year, 1 + 3 * ((sut.Month - 1) / 3), 1);
Assert.AreEqual(expected, flooredDateTime);
}
{
var flooredDateTime = DateTimeUtilities.FloorDateTime(sut, DateTimePart.Years, 10);
var expected = new DateTime(10 * (sut.Year / 10), 1, 1);
Assert.AreEqual(expected, flooredDateTime);
}
}
