public virtual void test_presentValueSensitivityRatesStickyStrike_parity()
{
CurrencyParameterSensitivities pvSensiRecLong = RATE_PROVIDER.parameterSensitivity(PRICER_SWAPTION.presentValueSensitivityRatesStickyStrike(SWAPTION_REC_LONG, RATE_PROVIDER, VOLS).build());
CurrencyParameterSensitivities pvSensiRecShort = RATE_PROVIDER.parameterSensitivity(PRICER_SWAPTION.presentValueSensitivityRatesStickyStrike(SWAPTION_REC_SHORT, RATE_PROVIDER, VOLS).build());
CurrencyParameterSensitivities pvSensiPayLong = RATE_PROVIDER.parameterSensitivity(PRICER_SWAPTION.presentValueSensitivityRatesStickyStrike(SWAPTION_PAY_LONG, RATE_PROVIDER, VOLS).build());
CurrencyParameterSensitivities pvSensiPayShort = RATE_PROVIDER.parameterSensitivity(PRICER_SWAPTION.presentValueSensitivityRatesStickyStrike(SWAPTION_PAY_SHORT, RATE_PROVIDER, VOLS).build());
assertTrue(pvSensiRecLong.equalWithTolerance(pvSensiRecShort.multipliedBy(-1d), NOTIONAL * TOL));
assertTrue(pvSensiPayLong.equalWithTolerance(pvSensiPayShort.multipliedBy(-1d), NOTIONAL * TOL));
double forward = PRICER_SWAP.parRate(RSWAP_REC, RATE_PROVIDER);
PointSensitivityBuilder forwardSensi = PRICER_SWAP.parRateSensitivity(RSWAP_REC, RATE_PROVIDER);
double annuityCash = PRICER_SWAP.LegPricer.annuityCash(RSWAP_REC.getLegs(SwapLegType.FIXED).get(0), forward);
double annuityCashDeriv = PRICER_SWAP.LegPricer.annuityCashDerivative(RSWAP_REC.getLegs(SwapLegType.FIXED).get(0), forward).getDerivative(0);
double discount = RATE_PROVIDER.discountFactor(USD, SETTLE_DATE);
PointSensitivityBuilder discountSensi = RATE_PROVIDER.discountFactors(USD).zeroRatePointSensitivity(SETTLE_DATE);
PointSensitivities expecedPoint = discountSensi.multipliedBy(annuityCash * (forward - STRIKE)).combinedWith(forwardSensi.multipliedBy(discount * annuityCash + discount * annuityCashDeriv * (forward - STRIKE))).build();
CurrencyParameterSensitivities expected = RATE_PROVIDER.parameterSensitivity(expecedPoint);
assertTrue(expected.equalWithTolerance(pvSensiPayLong.combinedWith(pvSensiRecLong.multipliedBy(-1d)), NOTIONAL * TOL));
assertTrue(expected.equalWithTolerance(pvSensiRecShort.combinedWith(pvSensiPayShort.multipliedBy(-1d)), NOTIONAL * TOL));
}
