func TestSession_CheckTargetTooLow(t *testing.T) {
store, _ := NewMemoryStoreFactory().Create(SessionID{})
session := Session{store: store}
builder := getBuilder()
msgBytes, _ := builder.Build()
msg, _ := parseMessage(msgBytes)
store.SetNextTargetMsgSeqNum(45)
//missing seq number
err := session.checkTargetTooLow(*msg)
if err == nil {
t.Error("Expected error")
}
if err.RejectReason() != rejectReasonRequiredTagMissing {
t.Error("Unexpected reject reason", err.RejectReason())
}
//too low
builder.Header().Set(fix.NewIntField(tag.MsgSeqNum, 43))
msgBytes, _ = builder.Build()
msg, _ = parseMessage(msgBytes)
err = session.checkTargetTooLow(*msg)
if err == nil {
t.Error("Expected error")
}
_ = err.(targetTooLow)
//spot on
builder.Header().Set(fix.NewIntField(tag.MsgSeqNum, 45))
msgBytes, _ = builder.Build()
msg, _ = parseMessage(msgBytes)
err = session.checkTargetTooLow(*msg)
if err != nil {
t.Error("Unexpected error ", err)
}
}
func (s *Session) send(builder MessageBuilder) {
s.fillDefaultHeader(builder)
seqNum := s.store.NextSenderMsgSeqNum()
builder.Header().Set(fix.NewIntField(tag.MsgSeqNum, seqNum))
msgType := new(fix.StringValue)
if builder.Header().GetField(tag.MsgType, msgType); fix.IsAdminMessageType(msgType.Value) {
s.application.ToAdmin(builder, s.sessionID)
} else {
s.application.ToApp(builder, s.sessionID)
}
if msgBytes, err := builder.Build(); err != nil {
panic(err)
} else {
s.store.SaveMessage(seqNum, msgBytes)
s.sendBytes(msgBytes)
s.store.IncrNextSenderMsgSeqNum()
}
}
func TestFieldMap_Total(t *testing.T) {
f1 := fix.NewStringField(1, "hello")
f2 := fix.NewStringField(2, "world")
beginString := fix.NewStringField(8, "FIX.4.4")
bodyLength := fix.NewIntField(9, 100)
checkSum := fix.NewStringField(10, "100")
fMap := fieldMap{}
fMap.init(normalFieldOrder)
fMap.Set(f1)
fMap.Set(f2)
fMap.Set(beginString)
fMap.Set(bodyLength)
fMap.Set(checkSum)
if fMap.total() != 2116 {
t.Error("Total should includes all fields but checkSum- got ", fMap.total())
}
}
func (s *ValidationTests) createFIX40NewOrderSingle() MessageBuilder {
msg := NewMessageBuilder()
msg.Header().Set(fix.NewStringField(tag.MsgType, "D"))
msg.Header().Set(fix.NewStringField(tag.BeginString, "FIX.4.0"))
msg.Header().Set(fix.NewStringField(tag.BodyLength, "0"))
msg.Header().Set(fix.NewStringField(tag.SenderCompID, "0"))
msg.Header().Set(fix.NewStringField(tag.TargetCompID, "0"))
msg.Header().Set(fix.NewStringField(tag.MsgSeqNum, "0"))
msg.Header().Set(fix.NewUTCTimestampField(tag.SendingTime, time.Now()))
msg.Body().Set(fix.NewStringField(tag.ClOrdID, "A"))
msg.Body().Set(fix.NewStringField(tag.HandlInst, "1"))
msg.Body().Set(fix.NewStringField(tag.Symbol, "A"))
msg.Body().Set(fix.NewStringField(tag.Side, "1"))
msg.Body().Set(fix.NewStringField(tag.OrdType, "1"))
msg.Body().Set(fix.NewIntField(tag.OrderQty, 5))
msg.Trailer().Set(fix.NewStringField(tag.CheckSum, "000"))
return msg
}
func (m *Message) rebuild() {
header := m.Header.(fieldMap)
trailer := m.Trailer.(fieldMap)
bodyLength := header.length() + len(m.bodyBytes) + trailer.length()
header.Set(fix.NewIntField(tag.BodyLength, bodyLength))
checkSum := header.total() + trailer.total()
for _, b := range m.bodyBytes {
checkSum += int(b)
}
checkSum %= 256
trailer.Set(newCheckSum(checkSum))
var b bytes.Buffer
header.write(&b)
b.Write(m.bodyBytes)
trailer.write(&b)
m.rawMessage = b.Bytes()
}
func (m messageBuilder) cook() {
bodyLength := m.header.length() + m.body.length() + m.trailer.length()
m.header.Set(fix.NewIntField(tag.BodyLength, bodyLength))
checkSum := (m.header.total() + m.body.total() + m.trailer.total()) % 256
m.trailer.Set(newCheckSum(checkSum))
}