diff --git a/Makefile b/Makefile
index e82bbe91a31fa..6eeaac07973a0 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ path_to_add := $(addsuffix /bin,$(subst :,/bin:,$(GOPATH))):$(PWD)/tools/bin
 export PATH := $(path_to_add):$(PATH)
 
 GO        := GO111MODULE=on go
-GOBUILD   := CGO_ENABLED=1 $(GO) build $(BUILD_FLAG)
+GOBUILD   := CGO_ENABLED=1 $(GO) build $(BUILD_FLAG) -tags codes
 GOBUILDCOVERAGE := GOPATH=$(GOPATH) CGO_ENABLED=1 cd tidb-server; $(GO) test -coverpkg="../..." -c .
 GOTEST    := CGO_ENABLED=1 $(GO) test -p 4
 OVERALLS  := CGO_ENABLED=1 GO111MODULE=on overalls
@@ -20,7 +20,7 @@ OVERALLS  := CGO_ENABLED=1 GO111MODULE=on overalls
 ARCH      := "`uname -s`"
 LINUX     := "Linux"
 MAC       := "Darwin"
-PACKAGE_LIST  := go list ./...| grep -vE "cmd"
+PACKAGE_LIST  := go list ./...| grep -vE "cmd" | grep -vE "test"
 PACKAGES  := $$($(PACKAGE_LIST))
 PACKAGE_DIRECTORIES := $(PACKAGE_LIST) | sed 's|github.com/pingcap/$(PROJECT)/||'
 FILES     := $$(find $$($(PACKAGE_DIRECTORIES)) -name "*.go")
diff --git a/server/sql_info_fetcher.go b/server/sql_info_fetcher.go
index 8f07a340c13d6..204233d8acd42 100644
--- a/server/sql_info_fetcher.go
+++ b/server/sql_info_fetcher.go
@@ -34,7 +34,6 @@ import (
 	"github.com/pingcap/tidb/statistics/handle"
 	"github.com/pingcap/tidb/store/tikv"
 	"github.com/pingcap/tidb/util/sqlexec"
-	"github.com/pingcap/tidb/util/testkit"
 )
 
 type sqlInfoFetcher struct {
@@ -171,7 +170,7 @@ func (sh *sqlInfoFetcher) zipInfoForSQL(w http.ResponseWriter, r *http.Request)
 			terror.Log(err)
 			return
 		}
-		sRows, err := testkit.ResultSetToStringSlice(reqCtx, sh.s, recordSets[0])
+		sRows, err := session.ResultSetToStringSlice(reqCtx, sh.s, recordSets[0])
 		if err != nil {
 			err = sh.writeErrFile(zw, "explain.err.txt", err)
 			terror.Log(err)
@@ -248,7 +247,7 @@ func (sh *sqlInfoFetcher) getExplainAnalyze(ctx context.Context, sql string, res
 		resultChan <- &explainAnalyzeResult{err: err}
 		return
 	}
-	rows, err := testkit.ResultSetToStringSlice(ctx, sh.s, recordSets[0])
+	rows, err := session.ResultSetToStringSlice(ctx, sh.s, recordSets[0])
 	if err != nil {
 		terror.Log(err)
 		rows = nil
@@ -292,7 +291,7 @@ func (sh *sqlInfoFetcher) getShowCreateTable(pair tableNamePair, zw *zip.Writer)
 	if err != nil {
 		return err
 	}
-	sRows, err := testkit.ResultSetToStringSlice(context.Background(), sh.s, recordSets[0])
+	sRows, err := session.ResultSetToStringSlice(context.Background(), sh.s, recordSets[0])
 	if err != nil {
 		terror.Log(err)
 		return nil
diff --git a/session/tidb.go b/session/tidb.go
index 568edddb240c5..4498848fa8ad2 100644
--- a/session/tidb.go
+++ b/session/tidb.go
@@ -363,6 +363,36 @@ func IsQuery(sql string) bool {
 	return false
 }
 
+// ResultSetToStringSlice changes the RecordSet to [][]string.
+func ResultSetToStringSlice(ctx context.Context, s Session, rs sqlexec.RecordSet) ([][]string, error) {
+	rows, err := GetRows4Test(ctx, s, rs)
+	if err != nil {
+		return nil, err
+	}
+	err = rs.Close()
+	if err != nil {
+		return nil, err
+	}
+	sRows := make([][]string, len(rows))
+	for i := range rows {
+		row := rows[i]
+		iRow := make([]string, row.Len())
+		for j := 0; j < row.Len(); j++ {
+			if row.IsNull(j) {
+				iRow[j] = "<nil>"
+			} else {
+				d := row.GetDatum(j, &rs.Fields()[j].Column.FieldType)
+				iRow[j], err = d.ToString()
+				if err != nil {
+					return nil, err
+				}
+			}
+		}
+		sRows[i] = iRow
+	}
+	return sRows, nil
+}
+
 // Session errors.
 var (
 	ErrForUpdateCantRetry = terror.ClassSession.New(codeForUpdateCantRetry,
diff --git a/util/testkit/ctestkit.go b/util/testkit/ctestkit.go
index 726a15c94428a..f3bb5e75d6232 100644
--- a/util/testkit/ctestkit.go
+++ b/util/testkit/ctestkit.go
@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !codes
+
 package testkit
 
 import (
diff --git a/util/testkit/fake.go b/util/testkit/fake.go
new file mode 100644
index 0000000000000..20321b82ae7d9
--- /dev/null
+++ b/util/testkit/fake.go
@@ -0,0 +1,3 @@
+// +build codes
+
+package testkit
diff --git a/util/testkit/testkit.go b/util/testkit/testkit.go
index 04e1df79b5796..a02463450180b 100644
--- a/util/testkit/testkit.go
+++ b/util/testkit/testkit.go
@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !codes
+
 package testkit
 
 import (
@@ -269,39 +271,9 @@ func (tk *TestKit) ResultSetToResult(rs sqlexec.RecordSet, comment check.Comment
 	return tk.ResultSetToResultWithCtx(context.Background(), rs, comment)
 }
 
-// ResultSetToStringSlice changes the RecordSet to [][]string.
-func ResultSetToStringSlice(ctx context.Context, s session.Session, rs sqlexec.RecordSet) ([][]string, error) {
-	rows, err := session.GetRows4Test(ctx, s, rs)
-	if err != nil {
-		return nil, err
-	}
-	err = rs.Close()
-	if err != nil {
-		return nil, err
-	}
-	sRows := make([][]string, len(rows))
-	for i := range rows {
-		row := rows[i]
-		iRow := make([]string, row.Len())
-		for j := 0; j < row.Len(); j++ {
-			if row.IsNull(j) {
-				iRow[j] = "<nil>"
-			} else {
-				d := row.GetDatum(j, &rs.Fields()[j].Column.FieldType)
-				iRow[j], err = d.ToString()
-				if err != nil {
-					return nil, err
-				}
-			}
-		}
-		sRows[i] = iRow
-	}
-	return sRows, nil
-}
-
 // ResultSetToResultWithCtx converts sqlexec.RecordSet to testkit.Result.
 func (tk *TestKit) ResultSetToResultWithCtx(ctx context.Context, rs sqlexec.RecordSet, comment check.CommentInterface) *Result {
-	sRows, err := ResultSetToStringSlice(ctx, tk.Se, rs)
+	sRows, err := session.ResultSetToStringSlice(ctx, tk.Se, rs)
 	tk.c.Check(err, check.IsNil, comment)
 	return &Result{rows: sRows, c: tk.c, comment: comment}
 }
diff --git a/util/testutil/testutil.go b/util/testutil/testutil.go
index 9e4928c6df696..3aee8a4146613 100644
--- a/util/testutil/testutil.go
+++ b/util/testutil/testutil.go
@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !codes
+
 package testutil
 
 import (