pkiutil.EncodeCertPEM(cert),
	)

	if err := clientcmd.WriteToFile(*config, filepath.Join(dir, name)); err != nil {
		t.Fatalf("couldn't write out certificate")
	}

	return cert
}

func TestFileExists(t *testing.T) {
	tmpdir, err := os.MkdirTemp("", "")
	if err != nil {
		t.Fatalf("Couldn't create tmpdir: %v", err)
	}
	defer func() {
		err = os.RemoveAll(tmpdir)
		if err != nil {

			err:     missingFolderError,
		},
	}
	for _, c := range cases {
		t.Run(c.desc, func(t *testing.T) {
			c.run(t, &utilfs.DefaultFs{})
		})
	}
}

func TestFileExists(t *testing.T) {
	fn := func(fs utilfs.Filesystem, dir string, c *test) []error {
		ok, err := FileExists(fs, filepath.Join(dir, "foo"))
		if err != nil {
			return []error{err}
		}
		if !ok {