package logincreds import ( "io" "os" ) var openFile func(string) (io.ReadCloser, error) = func(name string) (io.ReadCloser, error) { return os.Open(name) } var createFile func(string, os.FileMode) (io.WriteCloser, error) = func(name string, mode os.FileMode) (io.WriteCloser, error) { return os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, mode) }