Files
tidb/br/pkg/version/version_test.go

625 lines
20 KiB
Go

// Copyright 2020 PingCAP, Inc. Licensed under Apache-2.0.
package version
import (
"context"
"errors"
"fmt"
"strings"
"testing"
"github.com/DATA-DOG/go-sqlmock"
"github.com/coreos/go-semver/semver"
"github.com/pingcap/kvproto/pkg/metapb"
"github.com/pingcap/tidb/br/pkg/version/build"
"github.com/stretchr/testify/require"
pd "github.com/tikv/pd/client"
)
type mockPDClient struct {
pd.Client
getAllStores func() []*metapb.Store
}
func (m *mockPDClient) GetAllStores(ctx context.Context, opts ...pd.GetStoreOption) ([]*metapb.Store, error) {
if m.getAllStores != nil {
return m.getAllStores(), nil
}
return []*metapb.Store{}, nil
}
func tiflash(version string) []*metapb.Store {
return []*metapb.Store{
{Version: version, Labels: []*metapb.StoreLabel{{Key: "engine", Value: "tiflash"}}},
}
}
func TestCheckClusterVersion(t *testing.T) {
oldReleaseVersion := build.ReleaseVersion
defer func() {
build.ReleaseVersion = oldReleaseVersion
}()
mock := mockPDClient{
Client: nil,
}
{
build.ReleaseVersion = "v6.2.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v5.4.2`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.Error(t, err)
require.Regexp(t, `^TiKV .* is too low when use PiTR, please `, err.Error())
}
{
build.ReleaseVersion = "v6.2.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.0.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.Error(t, err)
require.Regexp(t, `^TiKV .* is too low when use PiTR, please `, err.Error())
}
{
build.ReleaseVersion = "v6.2.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.1.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.Error(t, err)
require.Regexp(t, `^TiKV .* version mismatch when use PiTR v6.2.0\+, please `, err.Error())
}
{
// Default value of `pitrSupportBatchKVFiles` should be `false`.
build.ReleaseVersion = "v6.5.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.2.0`}}
}
require.Equal(t, CheckPITRSupportBatchKVFiles(), false)
}
{
build.ReleaseVersion = "v6.2.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.2.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.NoError(t, err)
require.Equal(t, CheckPITRSupportBatchKVFiles(), false)
}
{
pitrSupportBatchKVFiles = true
build.ReleaseVersion = "v6.2.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.4.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.NoError(t, err)
require.Equal(t, CheckPITRSupportBatchKVFiles(), false)
}
{
pitrSupportBatchKVFiles = true
build.ReleaseVersion = "v6.2.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.5.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.NoError(t, err)
require.Equal(t, CheckPITRSupportBatchKVFiles(), true)
}
{
build.ReleaseVersion = "v6.1.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v5.4.2`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.Error(t, err)
require.Regexp(t, `^TiKV .* is too low when use PiTR, please `, err.Error())
}
{
build.ReleaseVersion = "v6.1.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.1.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.NoError(t, err)
}
{
build.ReleaseVersion = "v6.1.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: `v6.2.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBRPiTR)
require.Error(t, err)
require.Regexp(t, `^TiKV .* version mismatch when use PiTR v6.1.0, please `, err.Error())
}
{
build.ReleaseVersion = "v4.0.5"
mock.getAllStores = func() []*metapb.Store {
return tiflash("v4.0.0-rc.1")
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, `^incompatible.*version v4.0.0-rc.1, try update it to 4.0.0`, err.Error())
}
{
build.ReleaseVersion = "v3.0.14"
mock.getAllStores = func() []*metapb.Store {
return tiflash("v3.1.0-beta.1")
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, `^incompatible.*version v3.1.0-beta.1, try update it to 3.1.0`, err.Error())
}
{
build.ReleaseVersion = "v3.1.1"
mock.getAllStores = func() []*metapb.Store {
return tiflash("v3.0.15")
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, `^incompatible.*version v3.0.15, try update it to 3.1.0`, err.Error())
}
{
build.ReleaseVersion = "v3.1.0-beta.2"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: minTiKVVersion.String()}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.NoError(t, err)
}
{
build.ReleaseVersion = "v3.1.0-beta.2"
mock.getAllStores = func() []*metapb.Store {
// TiKV is too lower to support BR
return []*metapb.Store{{Version: `v2.1.0`}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, "TiKV .* don't support BR, please upgrade cluster ", err.Error())
}
{
build.ReleaseVersion = "v3.1.0"
mock.getAllStores = func() []*metapb.Store {
// TiKV v3.1.0-beta.2 is incompatible with BR v3.1.0
return []*metapb.Store{{Version: minTiKVVersion.String()}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, "^TiKV .* mismatch, please ", err.Error())
}
{
build.ReleaseVersion = "v3.1.0"
mock.getAllStores = func() []*metapb.Store {
// TiKV v4.0.0-rc major version mismatch with BR v3.1.0
return []*metapb.Store{{Version: "v4.0.0-rc"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, "^TiKV .* major version mismatch, please ", err.Error())
}
{
build.ReleaseVersion = "v4.0.0-rc.2"
mock.getAllStores = func() []*metapb.Store {
// TiKV v4.0.0-rc.2 is incompatible with BR v4.0.0-beta.1
return []*metapb.Store{{Version: "v4.0.0-beta.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
require.Regexp(t, "^TiKV .* mismatch, please ", err.Error())
}
{
build.ReleaseVersion = "v4.0.0-rc.2"
mock.getAllStores = func() []*metapb.Store {
// TiKV v4.0.0-rc.1 with BR v4.0.0-rc.2 is ok
return []*metapb.Store{{Version: "v4.0.0-rc.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.NoError(t, err)
require.Error(t, CheckCheckpointSupport())
}
{
build.ReleaseVersion = "v6.0.0-rc.2"
mock.getAllStores = func() []*metapb.Store {
// TiKV v6.0.0-rc.1 with BR v6.0.0-rc.2 is ok
return []*metapb.Store{{Version: "v6.0.0-rc.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.NoError(t, err)
require.Error(t, CheckCheckpointSupport())
}
{
build.ReleaseVersion = "v6.5.0-rc.2"
mock.getAllStores = func() []*metapb.Store {
// TiKV v6.5.0-rc.1 with BR v6.5.0-rc.2 is ok
return []*metapb.Store{{Version: "v6.5.0-rc.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.NoError(t, err)
require.NoError(t, CheckCheckpointSupport())
}
{
// Even across many patch versions, backup should be usable.
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v4.0.0-rc.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBackup(semver.New("4.0.12")))
require.NoError(t, err)
}
{
// Restore across one major version allowed.
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v4.0.0-rc.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBackup(semver.New("5.0.0-rc")))
require.NoError(t, err)
}
{
// Restore across two major versions isn't allowed.
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v4.0.0-rc.1"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBackup(semver.New("6.0.0")))
require.Error(t, err)
}
{
build.ReleaseVersion = "v4.0.0-rc.1"
mock.getAllStores = func() []*metapb.Store {
// TiKV v4.0.0-rc.2 with BR v4.0.0-rc.1 is ok
return []*metapb.Store{{Version: "v4.0.0-rc.2"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.NoError(t, err)
}
{
build.ReleaseVersion = "v6.0.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v5.4.0"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.NoError(t, err)
}
{
build.ReleaseVersion = "v6.0.0"
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v4.4.0"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForBR)
require.Error(t, err)
}
{
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v6.4.0"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForDDL)
require.NoError(t, err)
}
{
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v6.2.0"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForDDL)
require.NoError(t, err)
}
{
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v6.2.0-alpha"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForDDL)
require.NoError(t, err)
}
{
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v6.1.0"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForDDL)
require.Error(t, err)
}
{
mock.getAllStores = func() []*metapb.Store {
return []*metapb.Store{{Version: "v5.4.0"}}
}
err := CheckClusterVersion(context.Background(), &mock, CheckVersionForDDL)
require.Error(t, err)
}
}
func TestCompareVersion(t *testing.T) {
require.Equal(t, -1, semver.New("4.0.0-rc").Compare(*semver.New("4.0.0-rc.2")))
require.Equal(t, -1, semver.New("4.0.0-beta.3").Compare(*semver.New("4.0.0-rc.2")))
require.Equal(t, -1, semver.New("4.0.0-rc.1").Compare(*semver.New("4.0.0")))
require.Equal(t, -1, semver.New("4.0.0-beta.1").Compare(*semver.New("4.0.0")))
require.Equal(t, -1, semver.New(removeVAndHash("4.0.0-rc-35-g31dae220")).Compare(*semver.New("4.0.0-rc.2")))
require.Equal(t, 1, semver.New(removeVAndHash("4.0.0-9-g30f0b014")).Compare(*semver.New("4.0.0-rc.1")))
require.Equal(t, 0, semver.New(removeVAndHash("v3.0.0-beta-211-g09beefbe0-dirty")).
Compare(*semver.New("3.0.0-beta")))
require.Equal(t, 0, semver.New(removeVAndHash("v3.0.5-dirty")).
Compare(*semver.New("3.0.5")))
require.Equal(t, 0, semver.New(removeVAndHash("v3.0.5-beta.12-dirty")).
Compare(*semver.New("3.0.5-beta.12")))
require.Equal(t, 0, semver.New(removeVAndHash("v2.1.0-rc.1-7-g38c939f-dirty")).
Compare(*semver.New("2.1.0-rc.1")))
}
func TestNextMajorVersion(t *testing.T) {
oldReleaseVersion := build.ReleaseVersion
defer func() {
build.ReleaseVersion = oldReleaseVersion
}()
build.ReleaseVersion = "v4.0.0-rc.1"
require.Equal(t, "5.0.0", NextMajorVersion().String())
build.ReleaseVersion = "4.0.0-rc-35-g31dae220"
require.Equal(t, "5.0.0", NextMajorVersion().String())
build.ReleaseVersion = "4.0.0-9-g30f0b014"
require.Equal(t, "5.0.0", NextMajorVersion().String())
build.ReleaseVersion = "v5.0.0-rc.2"
require.Equal(t, "6.0.0", NextMajorVersion().String())
build.ReleaseVersion = "v5.0.0-master"
require.Equal(t, "6.0.0", NextMajorVersion().String())
build.ReleaseVersion = "b7ed87d-dirty"
_ = NextMajorVersion()
//^ doesn't matter what is returned, just need to ensure it doesn't crash.
}
func TestExtractTiDBVersion(t *testing.T) {
vers, err := ExtractTiDBVersion("5.7.10-TiDB-v2.1.0-rc.1-7-g38c939f")
require.NoError(t, err)
require.Equal(t, *semver.New("2.1.0-rc.1"), *vers)
vers, err = ExtractTiDBVersion("5.7.10-TiDB-v2.0.4-1-g06a0bf5")
require.NoError(t, err)
require.Equal(t, *semver.New("2.0.4"), *vers)
vers, err = ExtractTiDBVersion("5.7.10-TiDB-v2.0.7")
require.NoError(t, err)
require.Equal(t, *semver.New("2.0.7"), *vers)
vers, err = ExtractTiDBVersion("8.0.12-TiDB-v3.0.5-beta.12")
require.NoError(t, err)
require.Equal(t, *semver.New("3.0.5-beta.12"), *vers)
vers, err = ExtractTiDBVersion("5.7.25-TiDB-v3.0.0-beta-211-g09beefbe0-dirty")
require.NoError(t, err)
require.Equal(t, *semver.New("3.0.0-beta"), *vers)
vers, err = ExtractTiDBVersion("8.0.12-TiDB-v3.0.5-dirty")
require.NoError(t, err)
require.Equal(t, *semver.New("3.0.5"), *vers)
vers, err = ExtractTiDBVersion("8.0.12-TiDB-v3.0.5-beta.12-dirty")
require.NoError(t, err)
require.Equal(t, *semver.New("3.0.5-beta.12"), *vers)
vers, err = ExtractTiDBVersion("5.7.10-TiDB-v2.1.0-rc.1-7-g38c939f-dirty")
require.NoError(t, err)
require.Equal(t, *semver.New("2.1.0-rc.1"), *vers)
_, err = ExtractTiDBVersion("")
require.Error(t, err)
require.Regexp(t, "^not a valid TiDB version", err.Error())
_, err = ExtractTiDBVersion("8.0.12")
require.Error(t, err)
require.Regexp(t, "^not a valid TiDB version", err.Error())
_, err = ExtractTiDBVersion("not-a-valid-version")
require.Error(t, err)
}
func TestCheckVersion(t *testing.T) {
err := CheckVersion("TiNB", *semver.New("2.3.5"), *semver.New("2.1.0"), *semver.New("3.0.0"))
require.NoError(t, err)
err = CheckVersion("TiNB", *semver.New("2.1.0"), *semver.New("2.3.5"), *semver.New("3.0.0"))
require.Error(t, err)
require.Regexp(t, "^TiNB version too old", err.Error())
err = CheckVersion("TiNB", *semver.New("3.1.0"), *semver.New("2.3.5"), *semver.New("3.0.0"))
require.Error(t, err)
require.Regexp(t, "^TiNB version too new", err.Error())
err = CheckVersion("TiNB", *semver.New("3.0.0-beta"), *semver.New("2.3.5"), *semver.New("3.0.0"))
require.Error(t, err)
require.Regexp(t, "^TiNB version too new", err.Error())
}
func versionEqualCheck(source *semver.Version, target *semver.Version) (result bool) {
if source == nil || target == nil {
return target == source
}
return source.Equal(*target)
}
func TestNormalizeBackupVersion(t *testing.T) {
cases := []struct {
target string
source string
}{
{"4.0.0", `"4.0.0\n"`},
{"5.0.0-rc.x", `"5.0.0-rc.x\n"`},
{"5.0.0-rc.x", `5.0.0-rc.x`},
{"4.0.12", `"4.0.12"` + "\n"},
{"<error-version>", ""},
}
for _, testCase := range cases {
target, _ := semver.NewVersion(testCase.target)
source := NormalizeBackupVersion(testCase.source)
result := versionEqualCheck(source, target)
require.Truef(t, result, "source=%v, target=%v", source, target)
}
}
func TestDetectServerInfo(t *testing.T) {
db, mock, err := sqlmock.New()
require.NoError(t, err)
defer db.Close()
mkVer := makeVersion
data := [][]interface{}{
{1, "8.0.18", ServerTypeMySQL, mkVer(8, 0, 18, "")},
{2, "10.4.10-MariaDB-1:10.4.10+maria~bionic", ServerTypeMariaDB, mkVer(10, 4, 10, "MariaDB-1")},
{3, "5.7.25-TiDB-v4.0.0-alpha-1263-g635f2e1af", ServerTypeTiDB, mkVer(4, 0, 0, "alpha-1263-g635f2e1af")},
{4, "5.7.25-TiDB-v3.0.7-58-g6adce2367", ServerTypeTiDB, mkVer(3, 0, 7, "58-g6adce2367")},
{5, "5.7.25-TiDB-3.0.6", ServerTypeTiDB, mkVer(3, 0, 6, "")},
{6, "invalid version", ServerTypeUnknown, mkVer(0, 0, 0, "")},
{7, "Release Version: v5.2.1\nEdition: Community\nGit Commit Hash: cd8fb24c5f7ebd9d479ed228bb41848bd5e97445", ServerTypeTiDB, mkVer(5, 2, 1, "")},
{8, "Release Version: v5.4.0-alpha-21-g86caab907\nEdition: Community\nGit Commit Hash: 86caab907c481bbc4243b5a3346ec13907cc8721\nGit Branch: master", ServerTypeTiDB, mkVer(5, 4, 0, "alpha-21-g86caab907")},
{9, "5.7.25-TiDB-5584f12", ServerTypeTiDB, mkVer(0, 0, 0, "")},
}
dec := func(d []interface{}) (tag int, verStr string, tp ServerType, v *semver.Version) {
return d[0].(int), d[1].(string), ServerType(d[2].(int)), d[3].(*semver.Version)
}
for _, datum := range data {
tag, r, serverTp, expectVer := dec(datum)
cmt := fmt.Sprintf("test case number: %d", tag)
tidbVersionQuery := mock.ExpectQuery("SELECT tidb_version\\(\\);")
if strings.HasPrefix(r, "Release Version:") {
tidbVersionQuery.WillReturnRows(sqlmock.NewRows([]string{"tidb_version"}).AddRow(r))
} else {
tidbVersionQuery.WillReturnError(errors.New("mock error"))
rows := sqlmock.NewRows([]string{"version"}).AddRow(r)
mock.ExpectQuery("SELECT version\\(\\);").WillReturnRows(rows)
}
verStr, err := FetchVersion(context.Background(), db)
require.NoError(t, err, cmt)
info := ParseServerInfo(verStr)
require.Equal(t, serverTp, info.ServerType, cmt)
require.Equal(t, expectVer == nil, info.ServerVersion == nil, cmt)
if info.ServerVersion == nil {
require.Nil(t, expectVer, cmt)
} else {
fmt.Printf("%v, %v\n", *info.ServerVersion, *expectVer)
require.True(t, info.ServerVersion.Equal(*expectVer))
}
require.NoError(t, mock.ExpectationsWereMet(), cmt)
}
}
func makeVersion(major, minor, patch int64, preRelease string) *semver.Version {
return &semver.Version{
Major: major,
Minor: minor,
Patch: patch,
PreRelease: semver.PreRelease(preRelease),
Metadata: "",
}
}
func TestFetchVersion(t *testing.T) {
db, mock, err := sqlmock.New()
require.NoError(t, err)
tidbVersion := `Release Version: v5.2.1
Edition: Community
Git Commit Hash: cd8fb24c5f7ebd9d479ed228bb41848bd5e97445
Git Branch: heads/refs/tags/v5.2.1
UTC Build Time: 2021-09-08 02:32:56
GoVersion: go1.16.4
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false`
ctx := context.Background()
mock.ExpectQuery("SELECT tidb_version\\(\\);").WillReturnRows(sqlmock.
NewRows([]string{""}).AddRow(tidbVersion))
versionStr, err := FetchVersion(ctx, db)
require.NoError(t, err)
require.Equal(t, tidbVersion, versionStr)
mock.ExpectQuery("SELECT tidb_version\\(\\);").WillReturnError(errors.New("mock failure"))
mock.ExpectQuery("SELECT version\\(\\);").WillReturnRows(sqlmock.
NewRows([]string{""}).AddRow("5.7.25"))
versionStr, err = FetchVersion(ctx, db)
require.NoError(t, err)
require.Equal(t, "5.7.25", versionStr)
mock.ExpectQuery("SELECT tidb_version\\(\\);").WillReturnError(errors.New("mock failure"))
mock.ExpectQuery("SELECT version\\(\\);").WillReturnError(errors.New("mock failure"))
_, err = FetchVersion(ctx, db)
require.Error(t, err)
require.Regexp(t, "mock failure$", err.Error())
}
func TestFetchVersionWithCommitID(t *testing.T) {
db, mock, err := sqlmock.New()
require.NoError(t, err)
tidbVersionWithValidReleaseVersion := `Release Version: v5.2.1
Edition: Community
Git Commit Hash: cd8fb24c5f7ebd9d479ed228bb41848bd5e97445
Git Branch: heads/refs/tags/v5.2.1
UTC Build Time: 2021-09-08 02:32:56
GoVersion: go1.16.4
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false`
tidbVersionWithCommitInReleaseVersion := `Release Version: bcf61918
Git Commit Hash: cd8fb24c5f7ebd9d479ed228bb41848bd5e97445
Git Branch: heads/refs/tags/v5.2.1
UTC Build Time: 2021-09-08 02:32:56
GoVersion: go1.16.4
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false`
ctx := context.Background()
mock.ExpectQuery("SELECT tidb_version\\(\\);").WillReturnRows(sqlmock.
NewRows([]string{""}).AddRow(tidbVersionWithValidReleaseVersion))
versionStr, err := FetchVersion(ctx, db)
require.NoError(t, err)
require.Equal(t, tidbVersionWithValidReleaseVersion, versionStr)
mock.ExpectQuery("SELECT tidb_version\\(\\);").WillReturnRows(sqlmock.
NewRows([]string{""}).AddRow(tidbVersionWithCommitInReleaseVersion))
mock.ExpectQuery("SELECT version\\(\\);").WillReturnRows(sqlmock.
NewRows([]string{""}).AddRow("5.7.25"))
versionStr, err = FetchVersion(ctx, db)
require.NoError(t, err)
require.Equal(t, "5.7.25", versionStr)
}