### Question:
Currency implements Comparable<Currency>, Serializable { @Override @ToString public String toString() { return code; } Currency(String code, int fractionDigits, String triangulationCurrency); static Set<Currency> getAvailableCurrencies(); @FromString static Currency of(String currencyCode); static Currency parse(String currencyCode); String getCode(); int getMinorUnitDigits(); Currency getTriangulationCurrency(); double roundMinorUnits(double amount); BigDecimal roundMinorUnits(BigDecimal amount); @Override int compareTo(Currency other); @Override boolean equals(Object obj); @Override int hashCode(); @Override @ToString String toString(); static final Currency USD; static final Currency EUR; static final Currency JPY; static final Currency GBP; static final Currency CHF; static final Currency AUD; static final Currency CAD; static final Currency NZD; static final Currency AED; static final Currency ARS; static final Currency BGN; static final Currency BHD; static final Currency BRL; static final Currency CLP; static final Currency CNH; static final Currency CNY; static final Currency COP; static final Currency CZK; static final Currency DKK; static final Currency EGP; static final Currency HKD; static final Currency HRK; static final Currency HUF; static final Currency IDR; static final Currency ILS; static final Currency INR; static final Currency ISK; static final Currency KRW; static final Currency KZT; static final Currency MAD; static final Currency MXN; static final Currency MYR; static final Currency NOK; static final Currency OMR; static final Currency PEN; static final Currency PHP; static final Currency PKR; static final Currency PLN; static final Currency QAR; static final Currency RON; static final Currency RUB; static final Currency SAR; static final Currency SEK; static final Currency SGD; static final Currency THB; static final Currency TRY; static final Currency TWD; static final Currency UAH; static final Currency VND; static final Currency ZAR; static final Currency XXX; static final Currency XAG; static final Currency XAU; static final Currency XPD; static final Currency XPT; }### Answer:
@Test public void test_toString() { Currency test = Currency.GBP; assertThat("GBP").isEqualTo(test.toString()); }