public virtual void test_volatility_sensitivity()
{
double eps = 1.0e-6;
int nData = TIME.size();
for (int i = 0; i < NB_TEST; i++)
{
double expiry = VOLS.relativeTime(TEST_OPTION_EXPIRY[i]);
BondFutureOptionSensitivity point = BondFutureOptionSensitivity.of(VOLS.Name, expiry, TEST_FUTURE_EXPIRY[i], TEST_STRIKE_PRICE[i], TEST_FUTURE_PRICE[i], USD, TEST_SENSITIVITY[i]);
CurrencyParameterSensitivity sensActual = VOLS.parameterSensitivity(point).Sensitivities.get(0);
double[] computed = sensActual.Sensitivity.toArray();
for (int j = 0; j < nData; j++)
{
DoubleArray volDataUp = VOL.with(j, VOL.get(j) + eps);
DoubleArray volDataDw = VOL.with(j, VOL.get(j) - eps);
InterpolatedNodalSurface paramUp = InterpolatedNodalSurface.of(METADATA, TIME, MONEYNESS, volDataUp, INTERPOLATOR_2D);
InterpolatedNodalSurface paramDw = InterpolatedNodalSurface.of(METADATA, TIME, MONEYNESS, volDataDw, INTERPOLATOR_2D);
BlackBondFutureExpiryLogMoneynessVolatilities provUp = BlackBondFutureExpiryLogMoneynessVolatilities.of(VAL_DATE_TIME, paramUp);
BlackBondFutureExpiryLogMoneynessVolatilities provDw = BlackBondFutureExpiryLogMoneynessVolatilities.of(VAL_DATE_TIME, paramDw);
double volUp = provUp.volatility(expiry, TEST_FUTURE_EXPIRY[i], TEST_STRIKE_PRICE[i], TEST_FUTURE_PRICE[i]);
double volDw = provDw.volatility(expiry, TEST_FUTURE_EXPIRY[i], TEST_STRIKE_PRICE[i], TEST_FUTURE_PRICE[i]);
double fd = 0.5 * (volUp - volDw) / eps;
assertEquals(computed[j], fd, eps);
}
}
}
public virtual void test_volatility()
{
for (int i = 0; i < NB_TEST; i++)
{
double expiryTime = VOLS.relativeTime(TEST_OPTION_EXPIRY[i]);
double volExpected = SURFACE.zValue(expiryTime, Math.Log(TEST_STRIKE_PRICE[i] / TEST_FUTURE_PRICE[i]));
double volComputed = VOLS.volatility(TEST_OPTION_EXPIRY[i], TEST_FUTURE_EXPIRY[i], TEST_STRIKE_PRICE[i], TEST_FUTURE_PRICE[i]);
assertEquals(volComputed, volExpected, TOLERANCE_VOL);
}
}