@Test
public void test() {
boolean isCall;
double spot, strike, b, price;
Expiry expiry;
YieldAndDiscountCurve curve;
EuropeanVanillaOptionDefinition definition;
StandardOptionDataBundle initialData, data;
double sigma = 0.01;
for (int i = 0; i < 100; i++) {
expiry = new Expiry(DateUtils.getDateOffsetWithYearFraction(DATE, RANDOM.nextDouble() * 2));
sigma += 0.03;
spot = 2 * RANDOM.nextDouble() + 10;
strike = 2 * RANDOM.nextDouble() + 10;
curve = YieldCurve.from(ConstantDoublesCurve.from(RANDOM.nextDouble() / 10));
b = 0; // RANDOM.nextDouble() / 20;
isCall = RANDOM.nextDouble() < 0.5 ? true : false;
definition = new EuropeanVanillaOptionDefinition(strike, expiry, isCall);
initialData = new StandardOptionDataBundle(curve, b, null, spot, DATE);
data =
new StandardOptionDataBundle(
curve, b, new VolatilitySurface(ConstantDoublesSurface.from(sigma)), spot, DATE);
price = BSM.getPricingFunction(definition).evaluate(data);
assertEquals(
sigma,
MODEL
.getSurface(
Collections.<OptionDefinition, Double>singletonMap(definition, price),
initialData)
.getVolatility(DoublesPair.of(0., 0.)),
EPS);
}
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testNullData() {
MODEL.getSurface(
Collections.<OptionDefinition, Double>singletonMap(
new EuropeanVanillaOptionDefinition(RANDOM.nextDouble(), new Expiry(DATE), true), 2.3),
null);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testEmptyPrices() {
MODEL.getSurface(Collections.<OptionDefinition, Double>emptyMap(), DATA);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testNullPrices() {
MODEL.getSurface(null, DATA);
}