@Test
 public void presentValueApproximation() {
   CurrencyAmount pvNumericalIntegration = METHOD_NI.presentValue(CPN_CMS, BUNDLE_HW);
   CurrencyAmount pvApproximation = METHOD_APP.presentValue(CPN_CMS, BUNDLE_HW);
   assertEquals(
       "Coupon CMS - Hull-White - present value - approximation",
       pvApproximation.getAmount(),
       pvNumericalIntegration.getAmount(),
       TOLERANCE_PRICE_APP);
 }