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: downwardapi_test.go
    path of file: ./repos/kubernetes/pkg/volume/downwardapi
    
    the code of the file until where you have to start completion: /*
Copyright 2015 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, s
    
func (step reSetUp) run(test *downwardAPITest) {
	if step.newLabels != nil {
		test.pod.ObjectMeta.Labels = step.newLabels
	}

	currentTarget, err := os.Readlink(filepath.Join(test.volumePath, downwardAPIDir))
	if err != nil {
		test.t.Errorf("labels file should be a link... %s\n", err.Error())
	}

	// now re-run Setup
	if err = test.mounter.SetUp(volume.MounterArgs{}); err != nil {
		test.t.Errorf("Failed to re-setup volume: %v", err)
	}

	// get the link of the link
	currentTarget2, err := os.Readlink(filepath.Join(test.volumePath, downwardAPIDir))
	if err != nil {
		test.t.Errorf(".current should be a link... %s\n", err.Error())
	}

	switch {
	case step.linkShouldChange && currentTarget2 == currentTarget:
		test.t.Errorf("Got and update between the two Setup... Target link should NOT be the same\n")
	case !step.linkShouldChange && currentTarget2 != currentTarget:
		test.t.Errorf("No update between the two Setup... Target link should be the same %s %s\n",
			currentTarget, currentTarget2)
	}
}