@Test(enabled = false)
  /** Tests of performance. "enabled = false" for the standard testing. */
  public void performance() {
    long startTime, endTime;
    final int nbTest = 100;
    CurrencyAmount pvPayerLongApproximation = CurrencyAmount.of(CUR, 0.0);
    CurrencyAmount pvPayerLongNI = CurrencyAmount.of(CUR, 0.0);
    startTime = System.currentTimeMillis();
    for (int looptest = 0; looptest < nbTest; looptest++) {
      pvPayerLongApproximation =
          METHOD_G2PP_APPROXIMATION.presentValue(SWAPTION_PAYER_LONG, BUNDLE_G2PP);
    }
    endTime = System.currentTimeMillis();
    System.out.println(
        nbTest + " pv swaption G2++ approximation method: " + (endTime - startTime) + " ms");
    // Performance note: G2++ price: 24-Aug-11: On Mac Pro 3.2 GHz Quad-Core Intel Xeon: 175 ms for
    // 10000 swaptions.
    startTime = System.currentTimeMillis();
    for (int looptest = 0; looptest < nbTest; looptest++) {
      pvPayerLongNI = METHOD_G2PP_NI.presentValue(SWAPTION_PAYER_LONG, BUNDLE_G2PP);
    }
    endTime = System.currentTimeMillis();
    System.out.println(
        nbTest
            + " pv swaption G2++ numerical integration method: "
            + (endTime - startTime)
            + " ms");
    // Performance note: G2++ price: 24-Aug-11: On Mac Pro 3.2 GHz Quad-Core Intel Xeon: 1075 ms for
    // 100 swaptions.

    System.out.println("G2++ approximation - present value: " + pvPayerLongApproximation);
    System.out.println("G2++ numerical integration - present value: " + pvPayerLongNI);
  }
 @Test
 /** Test the present value by approximation vs by numerical integration. */
 public void approximationNumericalIntegration() {
   CurrencyAmount pvApproximation =
       METHOD_G2PP_APPROXIMATION.presentValue(SWAPTION_PAYER_LONG, BUNDLE_G2PP);
   CurrencyAmount pvNI = METHOD_G2PP_NI.presentValue(SWAPTION_PAYER_LONG, BUNDLE_G2PP);
   assertEquals(
       "Swaption physical - G2++ - present value - approximation vs Numerical integration",
       pvApproximation.getAmount(),
       pvNI.getAmount(),
       2.0E+3);
 }