fix: update TestToBinaryDateTime

mysql/resultset_helper.go

@@ -3,6 +3,7 @@ package mysql
 import (
 	"bytes"
 	"encoding/binary"
+	"fmt"
 	"math"
 	"strconv"
 	"time"
@@ -43,7 +44,7 @@ func FormatTextValue(value interface{}) ([]byte, error) {
 	case string:
 		return utils.StringToByteSlice(v), nil
 	case time.Time:
-		return hack.Slice(v.Format(time.DateTime)), nil
+		return utils.StringToByteSlice(v.Format(time.DateTime)), nil
 	case nil:
 		return nil, nil
 	default:
@@ -55,7 +56,7 @@ func toBinaryDateTime(t time.Time) ([]byte, error) {
 	var buf bytes.Buffer
 
 	if t.IsZero() {
-		return nil, nil
+		return nil, fmt.Errorf("zero time")
 	}
 
 	year, month, day := t.Year(), t.Month(), t.Day()

mysql/util_test.go

@@ -1,9 +1,6 @@
 package mysql
 
 import (
-	"encoding/binary"
-	"fmt"
-	"strings"
 	"testing"
 	"time"
 
@@ -56,92 +53,65 @@ func TestFormatBinaryTime(t *testing.T) {
 	}
 }
 
-// mysql driver parse binary datetime
-func parseBinaryDateTime(num uint64, data []byte, loc *time.Location) (time.Time, error) {
-	switch num {
-	case 0:
-		return time.Time{}, nil
-	case 4:
-		return time.Date(
-			int(binary.LittleEndian.Uint16(data[:2])), // year
-			time.Month(data[2]),                       // month
-			int(data[3]),                              // day
-			0, 0, 0, 0,
-			loc,
-		), nil
-	case 7:
-		return time.Date(
-			int(binary.LittleEndian.Uint16(data[:2])), // year
-			time.Month(data[2]),                       // month
-			int(data[3]),                              // day
-			int(data[4]),                              // hour
-			int(data[5]),                              // minutes
-			int(data[6]),                              // seconds
-			0,
-			loc,
-		), nil
-	case 11:
-		return time.Date(
-			int(binary.LittleEndian.Uint16(data[:2])), // year
-			time.Month(data[2]),                       // month
-			int(data[3]),                              // day
-			int(data[4]),                              // hour
-			int(data[5]),                              // minutes
-			int(data[6]),                              // seconds
-			int(binary.LittleEndian.Uint32(data[7:11]))*1000, // nanoseconds
-			loc,
-		), nil
-	}
-	return time.Time{}, fmt.Errorf("invalid DATETIME packet length %d", num)
-}
-
 func TestToBinaryDateTime(t *testing.T) {
+	var (
+		DateTimeNano         = "2006-01-02 15:04:05.000000"
+		formatBinaryDateTime = func(n int, data []byte) string {
+			date, err := FormatBinaryDateTime(n, data)
+			if err != nil {
+				return ""
+			}
+			return string(date)
+		}
+	)
+
 	tests := []struct {
-		name     string
-		input    time.Time
-		expected string
+		Name   string
+		Data   time.Time
+		Expect func(n int, data []byte) string
+		Error  bool
 	}{
 		{
-			name:     "Zero time",
-			input:    time.Time{},
-			expected: "",
+			Name:   "Zero time",
+			Data:   time.Time{},
+			Expect: nil,
+			Error:  true,
 		},
 		{
-			name:     "Date with nanoseconds",
-			input:    time.Date(2023, 10, 10, 10, 10, 10, 123456000, time.UTC),
-			expected: "2023-10-10 10:10:10.123456 +0000 UTC",
+			Name:   "Date with nanoseconds",
+			Data:   time.Date(2023, 10, 10, 10, 10, 10, 123456000, time.UTC),
+			Expect: formatBinaryDateTime,
 		},
 		{
-			name:     "Date with time",
-			input:    time.Date(2023, 10, 10, 10, 10, 10, 0, time.UTC),
-			expected: "2023-10-10 10:10:10 +0000 UTC",
+			Name:   "Date with time",
+			Data:   time.Date(2023, 10, 10, 10, 10, 10, 0, time.UTC),
+			Expect: formatBinaryDateTime,
 		},
 		{
-			name:     "Date only",
-			input:    time.Date(2023, 10, 10, 0, 0, 0, 0, time.UTC),
-			expected: "2023-10-10 00:00:00 +0000 UTC",
+			Name:   "Date only",
+			Data:   time.Date(2023, 10, 10, 0, 0, 0, 0, time.UTC),
+			Expect: formatBinaryDateTime,
 		},
 	}
 
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			result, err := toBinaryDateTime(tt.input)
-			if err != nil {
-				t.Fatalf("unexpected error: %v", err)
+	for _, test := range tests {
+		t.Run(test.Name, func(t *testing.T) {
+			got, err := toBinaryDateTime(test.Data)
+			if test.Error {
+				require.Error(t, err)
+			} else {
+				require.NoError(t, err)
 			}
-			if len(result) == 0 {
+			if len(got) == 0 {
 				return
 			}
-			num := uint64(result[0])
-			data := result[1:]
-			date, err := parseBinaryDateTime(num, data, time.UTC)
-			if err != nil {
-				t.Fatalf("unexpected error: %v", err)
-			}
-
-			if !strings.EqualFold(date.String(), tt.expected) {
-				t.Errorf("expected %v, got %v", tt.expected, result)
+			tmp := test.Expect(int(got[0]), got[1:])
+			if int(got[0]) < 11 {
+				require.Equal(t, tmp, test.Data.Format(time.DateTime), "test case %v", test.Data.String())
+			} else {
+				require.Equal(t, tmp, test.Data.Format(DateTimeNano), "test case %v", test.Data.String())
 			}
 		})
 	}
+
 }