public void Can_Convert_Iana_Zones_To_Rails_Zones() { var errors = 0; var ianaZones = TZConvert.KnownIanaTimeZoneNames; foreach (var ianaZone in ianaZones.Except(UnmappableZones)) { try { var railsZones = TZConvert.IanaToRails(ianaZone); Assert.NotNull(railsZones); } catch (InvalidTimeZoneException e) { errors++; _output.WriteLine(e.Message); } } Assert.Equal(0, errors); }