Fix/issue 1384 (#1529)

Add support for scanning time.TIme

Author: tty2

internal/proto/scan.go

@@ -4,10 +4,13 @@ import (
 	"encoding"
 	"fmt"
 	"reflect"
+	"time"
 
 	"github.com/go-redis/redis/v8/internal/util"
 )
 
+// Scan parses bytes `b` to `v` with appropriate type.
+// nolint: gocyclo
 func Scan(b []byte, v interface{}) error {
 	switch v := v.(type) {
 	case nil:
@@ -99,6 +102,10 @@ func Scan(b []byte, v interface{}) error {
 	case *bool:
 		*v = len(b) == 1 && b[0] == '1'
 		return nil
+	case *time.Time:
+		var err error
+		*v, err = time.Parse(time.RFC3339Nano, util.BytesToString(b))
+		return err
 	case encoding.BinaryUnmarshaler:
 		return v.UnmarshalBinary(b)
 	default:

internal/proto/scan_test.go

@@ -1,8 +1,14 @@
-package proto
+package proto_test
 
 import (
+	"context"
 	"encoding/json"
+	"errors"
+	"testing"
+	"time"
 
+	"github.com/go-redis/redis/v8"
+	"github.com/go-redis/redis/v8/internal/proto"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 )
@@ -28,7 +34,7 @@ var _ = Describe("ScanSlice", func() {
 
 	It("[]testScanSliceStruct", func() {
 		var slice []testScanSliceStruct
-		err := ScanSlice(data, &slice)
+		err := proto.ScanSlice(data, &slice)
 		Expect(err).NotTo(HaveOccurred())
 		Expect(slice).To(Equal([]testScanSliceStruct{
 			{-1, "Back Yu"},
@@ -38,11 +44,36 @@ var _ = Describe("ScanSlice", func() {
 
 	It("var testContainer []*testScanSliceStruct", func() {
 		var slice []*testScanSliceStruct
-		err := ScanSlice(data, &slice)
+		err := proto.ScanSlice(data, &slice)
 		Expect(err).NotTo(HaveOccurred())
 		Expect(slice).To(Equal([]*testScanSliceStruct{
 			{-1, "Back Yu"},
 			{1, "szyhf"},
 		}))
 	})
 })
+
+func TestScan(t *testing.T) {
+	t.Parallel()
+
+	t.Run("time", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+
+		rdb := redis.NewClient(&redis.Options{
+			Addr: ":6379",
+		})
+
+		tm := time.Now()
+		rdb.Set(ctx, "now", tm, 0)
+
+		var tm2 time.Time
+		rdb.Get(ctx, "now").Scan(&tm2)
+
+		if !tm2.Equal(tm) {
+			t.Fatal(errors.New("tm2 and tm are not equal"))
+		}
+	})
+
+}