code: func TmpFile(t TestReporter, dir string, content string) afero.File {
  	file, err := afero.TempFile(appFs, dir, "file")
  
  	if err != nil {
  		t.Error("Failed to create the tmpFile: "+file.Name(), err)
  	}
  
  	file.WriteString(content)
  	Files = append(Files, file.Name())
  
  	return file
  }
docs: /*
  TmpFile Creates a tmp file for us to use when testing
  */