public void RoundTripEpoch()
    {
      var newYears = new DateTime(2008, 1, 1, 0, 0, 0);

      long epoch = newYears.Epoch();

      DateTime fromEpoch = DateTimeUtility.FromEpoch((int) epoch);

      Assert.AreEqual(newYears, fromEpoch);
    }
 public void EpochFor19700102OnUtcIs86400000()
 {
     DateTime aDayLater = new DateTime(1970, 1, 2, 0, 0, 0, DateTimeKind.Utc);
     Assert.Equal(86400000, aDayLater.Epoch());
 }