chore: remove refs to deprecated io/ioutil

Signed-off-by: guoguangwu <[email protected]>

Author: testwill

enginetest/testgen_test.go

@@ -3,7 +3,6 @@ package enginetest
 import (
 	"bufio"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -97,12 +96,7 @@ func writePlans(t *testing.T, s [][]setup.SetupScript, original []queries.QueryP
 
 func TestWriteComplexIndexQueries(t *testing.T) {
 	t.Skip()
-	tmp, err := ioutil.TempDir("", "*")
-	if err != nil {
-		return
-	}
-
-	outputPath := filepath.Join(tmp, "complex_index_queries.txt")
+	outputPath := filepath.Join(t.TempDir(), "complex_index_queries.txt")
 	f, err := os.Create(outputPath)
 	require.NoError(t, err)
 
@@ -121,12 +115,7 @@ func TestWriteComplexIndexQueries(t *testing.T) {
 
 func TestWriteCreateTableQueries(t *testing.T) {
 	t.Skip()
-	tmp, err := ioutil.TempDir("", "*")
-	if err != nil {
-		return
-	}
-
-	outputPath := filepath.Join(tmp, "create_table_queries.txt")
+	outputPath := filepath.Join(t.TempDir(), "create_table_queries.txt")
 	f, err := os.Create(outputPath)
 	require.NoError(t, err)
 

internal/sockstate/netstat_linux.go

@@ -25,7 +25,6 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net"
 	"os"
@@ -70,7 +69,7 @@ func getProcName(s []byte) string {
 func (p *procFd) iterFdDir() {
 	// link name is of the form socket:[5860846]
 	fddir := path.Join(p.base, "/fd")
-	fi, err := ioutil.ReadDir(fddir)
+	fi, err := os.ReadDir(fddir)
 	if err != nil {
 		return
 	}
@@ -110,7 +109,7 @@ func (p *procFd) iterFdDir() {
 
 func extractProcInfo(sktab []sockTabEntry) {
 	const basedir = "/proc"
-	fi, err := ioutil.ReadDir(basedir)
+	fi, err := os.ReadDir(basedir)
 	if err != nil {
 		return
 	}
@@ -233,7 +232,7 @@ var isWSL = false
 var isProcBlocked = false
 
 func init() {
-	osRelease, err := ioutil.ReadFile("/proc/sys/kernel/osrelease")
+	osRelease, err := os.ReadFile("/proc/sys/kernel/osrelease")
 	if err == nil {
 		osReleaseString := strings.ToLower(string(osRelease))
 		if strings.Contains(osReleaseString, "microsoft") {

server/handler_test.go

@@ -17,7 +17,7 @@ package server
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"strconv"
 	"testing"
@@ -1182,7 +1182,7 @@ func testServer(t *testing.T, ready chan struct{}, port string, breakConn bool)
 			_ = conn.Close()
 		}()
 
-		_, err = ioutil.ReadAll(conn)
+		_, err = io.ReadAll(conn)
 		if err != nil {
 			t.Fatal(err)
 		}

sql/expression/function/load_file_test.go

@@ -1,7 +1,6 @@
 package function
 
 import (
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -16,7 +15,7 @@ import (
 func createTempDirAndFile(fileName string) (string, *os.File, error) {
 	dir := os.TempDir()
 
-	file, err := ioutil.TempFile(dir, fileName)
+	file, err := os.CreateTemp(dir, fileName)
 	if err != nil {
 		return "", nil, err
 	}
@@ -107,7 +106,7 @@ func TestLoadFile(t *testing.T) {
 // runLoadFileTest takes in a loadFileTestCase and its relevant directory and validates whether LOAD_FILE is reading
 // the file accordingly.
 func runLoadFileTest(t *testing.T, tt loadFileTestCase, dir string) {
-	file, err := ioutil.TempFile(dir, tt.fileName)
+	file, err := os.CreateTemp(dir, tt.fileName)
 	assert.NoError(t, err)
 
 	defer file.Close()