_, err := ParsePKCS1PublicKey(derBytes)
	if !strings.Contains(err.Error(), errorContains) {
		t.Errorf("expected error containing %q, got %s", errorContains, err)
	}
}

func TestMarshalInvalidPublicKey(t *testing.T) {
	_, err := MarshalPKIXPublicKey(&ecdsa.PublicKey{})
	if err == nil {
		t.Errorf("expected error, got MarshalPKIXPublicKey success")
	}
	_, err = MarshalPKIXPublicKey(&ecdsa.PublicKey{