public void Append_AppendingWithCustomFields_CallsShipperWithCorrectValues()
{
_target.AddCustomField(new LogzioAppenderCustomField {
Key = "DatKey", Value = "DatVal"
});
_target.DoAppend(GetLoggingEventWithSomeData());
_target.Close();
_shipper.Received().Ship(Arg.Is <LogzioLoggingEvent>(x => (string)x.LogData["DatKey"] == "DatVal"), Arg.Any <ShipperOptions>());
}