func (tokReader) Token() (Token, error) {
	return StartElement{}, nil
}

type Failure struct{}

func (Failure) UnmarshalXML(*Decoder, StartElement) error {
	return nil
}

func TestTokenUnmarshaler(t *testing.T) {
	defer func() {
		if r := recover(); r != nil {
			t.Error("Unexpected panic using custom token unmarshaler")
		}
	}()

	d := NewTokenDecoder(tokReader{})