final double alpha = 0.0305473;
final double beta = 0.5;
final double nu = 0.34;
final double rho = -0.11;
final Sabr sabr = new Sabr();
double sabrVol = sabr.sabrVolatility(strike, forward, expiryTime, alpha, beta, nu, rho);
assertEquals(0.16,sabrVol, 1.0e-6);
strike = 0.0598;
sabrVol = sabr.sabrVolatility(strike, forward, expiryTime, alpha, beta, nu, rho);
assertEquals(0.15755519,sabrVol, 1.0e-6);
strike = 0.0198;
sabrVol = sabr.sabrVolatility(strike, forward, expiryTime, alpha, beta, nu, rho);
assertEquals(0.2373848,sabrVol, 1.0e-6);
}