You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: network_ubuntu_test.go
    path of file: ./repos/juju/cloudconfig/cloudinit
    
    the code of the file until where you have to start completion: // Copyright 2018 Canonical Ltd.
// Copyright 2015 Cloudbase Solutions SRL
// Licensed under the AGPLv3, see LICENCE file for details.

package cloudinit_test

import (
	"crypto/rand"
	"encoding/hex"
	"fmt"
	"os"
	"path/filepath"
	"strings"

	j
    
func (s *NetworkUbuntuSuite) runENIScript(c *gc.C, pythonBinary, ipCommand, input, expectedOutput string, wait, retries int) {
	dataFile := filepath.Join(s.tempFolder, "interfaces")
	dataOutFile := filepath.Join(s.tempFolder, "interfaces.out")
	dataBakFile := filepath.Join(s.tempFolder, "interfaces.bak")
	templFile := filepath.Join(s.tempFolder, "interfaces.templ")
	scriptFile := filepath.Join(s.tempFolder, "script.py")

	err := os.WriteFile(dataFile, []byte(s.originalSystemNetworkInterfaces), 0644)
	c.Assert(err, jc.ErrorIsNil, gc.Commentf("Can't write interfaces file"))

	err = os.WriteFile(templFile, []byte(input), 0644)
	c.Assert(err, jc.ErrorIsNil, gc.Commentf("Can't write interfaces.templ file"))

	err = os.WriteFile(scriptFile, []byte(cloudinit.NetworkInterfacesScript), 0755)
	c.Assert(err, jc.ErrorIsNil, gc.Commentf("Can't write script file"))

	script := fmt.Sprintf("%q %q --interfaces-file %q --output-file %q --command %q --wait %d --retries %d",
		pythonBinary, scriptFile, dataFile, dataOutFile, ipCommand, wait, retries)
	result, err := exec.RunCommands(exec.RunParams{Commands: script})
	c.Assert(err, jc.ErrorIsNil, gc.Commentf("script failed unexpectedly - %s", result))
	c.Logf("%s\n%s\n", string(result.Stdout), string(result.Stderr))

	for file, expected := range map[string]string{
		dataBakFile: s.originalSystemNetworkInterfaces,
		dataOutFile: expectedOutput,
		dataFile:    s.originalSystemNetworkInterfaces,
	} {
		data, err := os.ReadFile(file)
		c.Assert(err, jc.ErrorIsNil, gc.Commentf("can't open %q file: %s", file, err))
		output := string(data)
		c.Assert(output, gc.Equals, expected)
	}
}