}

type MustNotUnmarshalText struct{}

func (x MustNotUnmarshalText) UnmarshalText(text []byte) error {
	return errors.New("MustNotUnmarshalText was used")
}

func TestStringKind(t *testing.T) {
	type stringKind string
	want := map[stringKind]int{"foo": 42}
	data, err := Marshal(want)
	if err != nil {
		t.Fatalf("Marshal error: %v", err)
	}
	var got map[stringKind]int