public void test_of() {
ZeroRatePeriodicDiscountFactors test = ZeroRatePeriodicDiscountFactors.of(GBP, DATE_VAL, CURVE);
assertEquals(test.getCurrency(), GBP);
assertEquals(test.getValuationDate(), DATE_VAL);
assertEquals(test.getCurve(), CURVE);
assertEquals(test.getParameterCount(), CURVE.getParameterCount());
assertEquals(test.getParameter(0), CURVE.getParameter(0));
assertEquals(test.getParameterMetadata(0), CURVE.getParameterMetadata(0));
assertEquals(test.withParameter(0, 1d).getCurve(), CURVE.withParameter(0, 1d));
assertEquals(test.withPerturbation((i, v, m) -> v + 1d).getCurve(), CURVE.withPerturbation((i, v, m) -> v + 1d));
assertEquals(test.findData(CURVE.getName()), Optional.of(CURVE));
assertEquals(test.findData(CurveName.of("Rubbish")), Optional.empty());
}