tmpdir, err := os.MkdirTemp("", "")
	if err != nil {
		t.Fatalf("Couldn't create tmpdir")
	}

	return tmpdir
}

// SetupEmptyFiles is a utility function for kubeadm testing that creates one or more empty files (touch)
func SetupEmptyFiles(t *testing.T, tmpdir string, fileNames ...string) {
	for _, fileName := range fileNames {
		newFile, err := os.Create(filepath.Join(tmpdir, fileName))
		if err != nil {

			},
			expectedCa: setupCert,
		},
		{ // some file exists, but it is not a valid ca cert > err
			setupFunc: func(pkiDir string) error {
				testutil.SetupEmptyFiles(t, pkiDir, "dummy.crt")
				return nil
			},
			expectedError: true,
		},
		{ // cert exists, but it is not a ca > err
			setupFunc: func(pkiDir string) error {

			}

			if err == nil && client == nil {
				t.Fatal("got nil client")
			}
		})
	}
}

func TestCreateKubeConfigAndCSR(t *testing.T) {
	tmpDir := testutil.SetupTempDir(t)
	testutil.SetupEmptyFiles(t, tmpDir, "testfile", "bar.csr", "bar.key")
	defer func() {
		if err := os.RemoveAll(tmpDir); err != nil {
			t.Error(err)
		}
	}()
	caCert, caKey := certstestutil.SetupCertificateAuthority(t)