fixed unused variable code issue

pkg/kt/exec/run.go

@@ -34,14 +34,14 @@ func runCmd(cmd *exec.Cmd, name string, debug bool) (err error) {
 	var stdoutBuf, stderrBuf bytes.Buffer
 	stdoutIn, _ := cmd.StdoutPipe()
 	stderrIn, _ := cmd.StderrPipe()
-	var errStdout, errStderr error
+	// var errStdout, errStderr error
 	stdout := io.MultiWriter(os.Stdout, &stdoutBuf)
 	stderr := io.MultiWriter(os.Stderr, &stderrBuf)
 	go func() {
-		_, errStdout = io.Copy(stdout, stdoutIn)
+		_, _ = io.Copy(stdout, stdoutIn)
 	}()
 	go func() {
-		_, errStderr = io.Copy(stderr, stderrIn)
+		_, _ = io.Copy(stderr, stderrIn)
 	}()
 
 	err = cmd.Start()

test/integration/command_check_test.go

@@ -2,20 +2,21 @@ package integration
 
 import (
 	"testing"
-	"github.com/urfave/cli"
-	"github.com/alibaba/kt-connect/pkg/kt/options"
+
 	"github.com/alibaba/kt-connect/pkg/kt/command"
+	"github.com/alibaba/kt-connect/pkg/kt/options"
+	"github.com/urfave/cli"
 )
 
-func Test_should(t *testing.T) {
+func Test_shouldCheckLocalDenpendencies(t *testing.T) {
 	args := []string{"ktctl", "check"}
 	options := options.NewDaemonOptions()
 	app := cli.NewApp()
-	app.Commands = []cli.Command {
+	app.Commands = []cli.Command{
 		command.NewCheckCommand(options),
-	} 
+	}
 	err := app.Run(args)
 	if err != nil {
 		t.Errorf("%s failed: %v", args, err)
 	}
-}
+}