fix hincrby/hincrbyfloat err info

command/error.go

@@ -43,6 +43,9 @@ var (
 	// ErrInteger value is not an integer or out of range
 	ErrInteger = errors.New("ERR value is not an integer or out of range")
 
+	// ErrFloat value is not a valid float
+	ErrFloat = errors.New("ERR value is not a valid float")
+
 	// ErrBitInteger bit is not an integer or out of range
 	ErrBitInteger = errors.New("ERR bit is not an integer or out of range")
 

command/hashes.go

@@ -128,7 +128,7 @@ func HIncrBy(ctx *Context, txn *db.Transaction) (OnCommit, error) {
 	field := []byte(ctx.Args[1])
 	incr, err := strconv.ParseInt(ctx.Args[2], 10, 64)
 	if err != nil {
-		return nil, errors.New("ERR " + err.Error())
+		return nil, ErrInteger
 	}
 
 	hash, err := txn.Hash(key)
@@ -150,7 +150,7 @@ func HIncrByFloat(ctx *Context, txn *db.Transaction) (OnCommit, error) {
 	field := []byte(ctx.Args[1])
 	incr, err := strconv.ParseFloat(ctx.Args[2], 64)
 	if err != nil {
-		return nil, errors.New("ERR " + err.Error())
+		return nil, ErrFloat
 	}
 
 	hash, err := txn.Hash(key)

db/hash.go

@@ -3,6 +3,7 @@ package db
 import (
 	"bytes"
 	"encoding/binary"
+	"errors"
 	"math/rand"
 	"strconv"
 
@@ -423,7 +424,7 @@ func (hash *Hash) HIncrBy(field []byte, v int64) (int64, error) {
 		} else {
 			n, err = strconv.ParseInt(string(val), 10, 64)
 			if err != nil {
-				return 0, err
+				return 0, errors.New("hash value is not an integer")
 			}
 
 		}
@@ -466,7 +467,7 @@ func (hash *Hash) HIncrByFloat(field []byte, v float64) (float64, error) {
 		} else {
 			n, err = strconv.ParseFloat(string(val), 64)
 			if err != nil {
-				return 0, err
+				return 0, errors.New("hash value is not an float")
 			}
 
 		}