public void to_date_time() { Assert.Throws <ArgumentNullException>(() => ConvertExtensions.DateTime(null, new object())); Assert.Null(Convert.To.DateTime(null)); Assert.Equal(DateTime.MinValue, Convert.To.DateTime(DateTime.MinValue)); Assert.Equal(DateTime.MinValue, Convert.To.DateTime(DateTime.MinValue.ToString(CultureInfo.InvariantCulture))); Assert.Null(Convert.To.DateTime(new object())); }