/**
  * Vanilla swap builder from the settlement date, a swap generator and other details of a swap.
  *
  * @param settlementDate The settlement date.
  * @param maturityDate The swap maturity date.
  * @param generator The swap generator.
  * @param notionalFixed The fixed leg notional.
  * @param notionalIbor The ibor leg notional.
  * @param fixedRate The swap fixed rate.
  * @param isPayer The payer flag of the fixed leg.
  * @param calendar The holiday calendar for the ibor index.
  * @return The vanilla swap.
  */
 public static SwapFixedIborDefinition from(
     final ZonedDateTime settlementDate,
     final ZonedDateTime maturityDate,
     final GeneratorSwapFixedIbor generator,
     final double notionalFixed,
     final double notionalIbor,
     final double fixedRate,
     final boolean isPayer,
     final Calendar calendar) {
   ArgumentChecker.notNull(settlementDate, "Settlement date");
   ArgumentChecker.notNull(maturityDate, "Maturity date");
   ArgumentChecker.notNull(generator, "Swap generator");
   final AnnuityCouponFixedDefinition fixedLeg =
       AnnuityCouponFixedDefinition.from(
           generator.getCurrency(),
           settlementDate,
           maturityDate,
           generator.getFixedLegPeriod(),
           generator.getCalendar(),
           generator.getFixedLegDayCount(),
           generator.getIborIndex().getBusinessDayConvention(),
           generator.getIborIndex().isEndOfMonth(),
           notionalFixed,
           fixedRate,
           isPayer);
   final AnnuityCouponIborDefinition iborLeg =
       AnnuityCouponIborDefinition.from(
           settlementDate,
           maturityDate,
           notionalIbor,
           generator.getIborIndex(),
           !isPayer,
           calendar);
   return new SwapFixedIborDefinition(fixedLeg, iborLeg);
 }
/** Build of curve in several blocks with relevant Jacobian matrices. */
public class MulticurveBuildingDiscountingDiscountAUDTest {

  private static final Interpolator1D INTERPOLATOR_LINEAR =
      CombinedInterpolatorExtrapolatorFactory.getInterpolator(
          Interpolator1DFactory.LINEAR,
          Interpolator1DFactory.FLAT_EXTRAPOLATOR,
          Interpolator1DFactory.FLAT_EXTRAPOLATOR);

  private static final LastTimeCalculator MATURITY_CALCULATOR = LastTimeCalculator.getInstance();
  private static final double TOLERANCE_ROOT = 1.0E-10;
  private static final int STEP_MAX = 100;

  private static final Calendar SYD = new MondayToFridayCalendar("SYD");
  private static final Currency AUD = Currency.AUD;
  private static final FXMatrix FX_MATRIX = new FXMatrix(AUD);

  private static final double NOTIONAL = 1.0;

  private static final GeneratorSwapFixedON GENERATOR_OIS_AUD =
      GeneratorSwapFixedONMaster.getInstance().getGenerator("AUD1YRBAON", SYD);
  private static final IndexON INDEX_ON_AUD = GENERATOR_OIS_AUD.getIndex();
  private static final GeneratorDepositON GENERATOR_DEPOSIT_ON_AUD =
      new GeneratorDepositON("AUD Deposit ON", AUD, SYD, INDEX_ON_AUD.getDayCount());
  private static final GeneratorSwapFixedIborMaster GENERATOR_SWAP_MASTER =
      GeneratorSwapFixedIborMaster.getInstance();
  private static final GeneratorSwapIborIborMaster GENERATOR_BASIS_MASTER =
      GeneratorSwapIborIborMaster.getInstance();
  private static final GeneratorSwapFixedIbor AUD3MBBSW3M =
      GENERATOR_SWAP_MASTER.getGenerator("AUD3MBBSW3M", SYD);
  private static final GeneratorSwapFixedIbor AUD6MBBSW6M =
      GENERATOR_SWAP_MASTER.getGenerator("AUD6MBBSW6M", SYD);
  private static final GeneratorSwapIborIbor AUDBBSW3MBBSW6M =
      GENERATOR_BASIS_MASTER.getGenerator("AUDBBSW3MBBSW6M", SYD);
  private static final IborIndex AUDBB3M = AUD3MBBSW3M.getIborIndex();
  private static final IborIndex AUDBB6M = AUD6MBBSW6M.getIborIndex();
  private static final GeneratorFRA GENERATOR_FRA_3M =
      new GeneratorFRA("GENERATOR_FRA_3M", AUDBB3M, SYD);
  private static final GeneratorDepositIbor GENERATOR_AUDBB3M =
      new GeneratorDepositIbor("GENERATOR_AUDBB3M", AUDBB3M, SYD);
  private static final GeneratorDepositIbor GENERATOR_AUDBB6M =
      new GeneratorDepositIbor("GENERATOR_AUDBB6M", AUDBB6M, SYD);

  private static final ZonedDateTime NOW = DateUtils.getUTCDate(2011, 9, 28);

  private static final ZonedDateTimeDoubleTimeSeries TS_EMPTY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofEmptyUTC();
  private static final ZonedDateTimeDoubleTimeSeries TS_ON_AUD_WITH_TODAY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofUTC(
          new ZonedDateTime[] {
            DateUtils.getUTCDate(2011, 9, 27), DateUtils.getUTCDate(2011, 9, 28)
          },
          new double[] {0.07, 0.08});
  private static final ZonedDateTimeDoubleTimeSeries TS_ON_AUD_WITHOUT_TODAY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofUTC(
          new ZonedDateTime[] {
            DateUtils.getUTCDate(2011, 9, 27), DateUtils.getUTCDate(2011, 9, 28)
          },
          new double[] {0.07, 0.08});
  private static final ZonedDateTimeDoubleTimeSeries[] TS_FIXED_OIS_AUD_WITH_TODAY =
      new ZonedDateTimeDoubleTimeSeries[] {TS_EMPTY, TS_ON_AUD_WITH_TODAY};
  private static final ZonedDateTimeDoubleTimeSeries[] TS_FIXED_OIS_AUD_WITHOUT_TODAY =
      new ZonedDateTimeDoubleTimeSeries[] {TS_EMPTY, TS_ON_AUD_WITHOUT_TODAY};

  private static final ZonedDateTimeDoubleTimeSeries TS_IBOR_AUD3M_WITH_TODAY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofUTC(
          new ZonedDateTime[] {
            DateUtils.getUTCDate(2011, 9, 27), DateUtils.getUTCDate(2011, 9, 28)
          },
          new double[] {0.0035, 0.0036});
  private static final ZonedDateTimeDoubleTimeSeries TS_IBOR_AUD3M_WITHOUT_TODAY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofUTC(
          new ZonedDateTime[] {DateUtils.getUTCDate(2011, 9, 27)}, new double[] {0.0035});
  private static final ZonedDateTimeDoubleTimeSeries TS_IBOR_AUD6M_WITH_TODAY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofUTC(
          new ZonedDateTime[] {
            DateUtils.getUTCDate(2011, 9, 27), DateUtils.getUTCDate(2011, 9, 28)
          },
          new double[] {0.0035, 0.0036});
  private static final ZonedDateTimeDoubleTimeSeries TS_IBOR_AUD6M_WITHOUT_TODAY =
      ImmutableZonedDateTimeDoubleTimeSeries.ofUTC(
          new ZonedDateTime[] {DateUtils.getUTCDate(2011, 9, 27)}, new double[] {0.0035});

  private static final ZonedDateTimeDoubleTimeSeries[] TS_FIXED_IBOR_AUD3M_WITH_TODAY =
      new ZonedDateTimeDoubleTimeSeries[] {TS_IBOR_AUD3M_WITH_TODAY};
  private static final ZonedDateTimeDoubleTimeSeries[] TS_FIXED_IBOR_AUD3M_WITHOUT_TODAY =
      new ZonedDateTimeDoubleTimeSeries[] {TS_IBOR_AUD3M_WITHOUT_TODAY};
  private static final ZonedDateTimeDoubleTimeSeries[] TS_FIXED_IBOR_AUD3M6M_WITH_TODAY =
      new ZonedDateTimeDoubleTimeSeries[] {TS_IBOR_AUD3M_WITH_TODAY, TS_IBOR_AUD6M_WITH_TODAY};
  private static final ZonedDateTimeDoubleTimeSeries[] TS_FIXED_IBOR_AUD3M6M_WITHOUT_TODAY =
      new ZonedDateTimeDoubleTimeSeries[] {
        TS_IBOR_AUD3M_WITHOUT_TODAY, TS_IBOR_AUD6M_WITHOUT_TODAY
      };

  private static final String CURVE_NAME_DSC_AUD = "AUD Dsc";
  private static final String CURVE_NAME_FWD3_AUD = "AUD Fwd 3M";
  private static final String CURVE_NAME_FWD6_AUD = "AUD Fwd 6M";

  //  /** Simplified versions for the note */
  //  /** Market values for the dsc USD curve */
  //  private static final double[] DSC_AUD_MARKET_QUOTES = new double[] {0.0400, 0.0400, 0.0400,
  // 0.0400, 0.0400};
  //  /** Generators for the dsc USD curve */
  //  private static final GeneratorInstrument[] DSC_USD_GENERATORS = new GeneratorInstrument[]
  // {GENERATOR_DEPOSIT_ON_AUD, GENERATOR_OIS_AUD, GENERATOR_OIS_AUD, GENERATOR_OIS_AUD,
  // GENERATOR_OIS_AUD};
  //  /** Tenors for the dsc USD curve */
  //  private static final Period[] DSC_AUD_TENOR = new Period[] {Period.ofDays(0),
  // Period.ofMonths(1), Period.ofMonths(6), Period.ofYears(1), Period.ofYears(5)};
  //
  //  /** Market values for the Fwd 3M USD curve */
  //  private static final double[] FWD3_AUD_MARKET_QUOTES = new double[] {0.0420, 0.0420, 0.0470,
  // 0.0020};
  //  /** Generators for the Fwd 3M USD curve */
  //  private static final GeneratorInstrument[] FWD3_AUD_GENERATORS = new GeneratorInstrument[]
  // {GENERATOR_AUDBB3M, GENERATOR_FRA_3M, AUD3MBBSW3M, AUDBBSW3MBBSW6M};
  //  /** Tenors for the Fwd 3M USD curve */
  //  private static final Period[] FWD3_AUD_TENOR = new Period[] {Period.ofMonths(0),
  // Period.ofMonths(6), Period.ofYears(1), Period.ofYears(5)};
  //
  //  /** Market values for the Fwd 3M USD curve */
  //  private static final double[] FWD6_AUD_MARKET_QUOTES = new double[] {0.0440, 0.0020, 0.0560};
  //  /** Generators for the Fwd 3M USD curve */
  //  private static final GeneratorInstrument[] FWD6_AUD_GENERATORS = new GeneratorInstrument[]
  // {GENERATOR_AUDBB6M, AUDBBSW3MBBSW6M, AUD6MBBSW6M};
  //  /** Tenors for the Fwd 3M USD curve */
  //  private static final Period[] FWD6_AUD_TENOR = new Period[] {Period.ofMonths(0),
  // Period.ofYears(1), Period.ofYears(5)};

  /** Market values for the dsc USD curve */
  private static final double[] DSC_AUD_MARKET_QUOTES =
      new double[] {
        0.0400, 0.0400, 0.0400, 0.0400, 0.0400, 0.0400, 0.0400, 0.0400, 0.0400, 0.0400, 0.0400,
        0.0400
      };
  /** Generators for the dsc USD curve */
  private static final GeneratorInstrument<? extends GeneratorAttribute>[] DSC_USD_GENERATORS =
      new GeneratorInstrument<?>[] {
        GENERATOR_DEPOSIT_ON_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD,
        GENERATOR_OIS_AUD
      };
  /** Tenors for the dsc USD curve */
  private static final Period[] DSC_AUD_TENOR =
      new Period[] {
        Period.ofDays(0),
        Period.ofMonths(1),
        Period.ofMonths(2),
        Period.ofMonths(3),
        Period.ofMonths(6),
        Period.ofMonths(9),
        Period.ofYears(1),
        Period.ofYears(2),
        Period.ofYears(3),
        Period.ofYears(4),
        Period.ofYears(5),
        Period.ofYears(10)
      };

  private static final GeneratorAttributeIR[] DSC_AUD_ATTR =
      new GeneratorAttributeIR[DSC_AUD_TENOR.length];

  static {
    for (int loopins = 0; loopins < DSC_AUD_TENOR.length; loopins++) {
      DSC_AUD_ATTR[loopins] = new GeneratorAttributeIR(DSC_AUD_TENOR[loopins]);
    }
  }

  /** Market values for the Fwd 3M USD curve */
  private static final double[] FWD3_AUD_MARKET_QUOTES =
      new double[] {0.0420, 0.0420, 0.0420, 0.0420, 0.0430, 0.0470, 0.0020, 0.0020, 0.0020};
  /** Generators for the Fwd 3M USD curve */
  private static final GeneratorInstrument<? extends GeneratorAttribute>[] FWD3_AUD_GENERATORS =
      new GeneratorInstrument<?>[] {
        GENERATOR_AUDBB3M,
        GENERATOR_FRA_3M,
        GENERATOR_FRA_3M,
        AUD3MBBSW3M,
        AUD3MBBSW3M,
        AUD3MBBSW3M,
        AUDBBSW3MBBSW6M,
        AUDBBSW3MBBSW6M,
        AUDBBSW3MBBSW6M
      };
  /** Tenors for the Fwd 3M USD curve */
  private static final Period[] FWD3_AUD_TENOR =
      new Period[] {
        Period.ofMonths(0),
        Period.ofMonths(6),
        Period.ofMonths(9),
        Period.ofYears(1),
        Period.ofYears(2),
        Period.ofYears(3),
        Period.ofYears(5),
        Period.ofYears(7),
        Period.ofYears(10)
      };

  private static final GeneratorAttributeIR[] FWD3_AUD_ATTR =
      new GeneratorAttributeIR[FWD3_AUD_TENOR.length];

  static {
    for (int loopins = 0; loopins < FWD3_AUD_TENOR.length; loopins++) {
      FWD3_AUD_ATTR[loopins] = new GeneratorAttributeIR(FWD3_AUD_TENOR[loopins]);
    }
  }

  /** Market values for the Fwd 3M USD curve */
  private static final double[] FWD6_AUD_MARKET_QUOTES =
      new double[] {0.0440, 0.0020, 0.0020, 0.0020, 0.0560, 0.0610, 0.0620};
  /** Generators for the Fwd 3M USD curve */
  private static final GeneratorInstrument<? extends GeneratorAttribute>[] FWD6_AUD_GENERATORS =
      new GeneratorInstrument<?>[] {
        GENERATOR_AUDBB6M,
        AUDBBSW3MBBSW6M,
        AUDBBSW3MBBSW6M,
        AUDBBSW3MBBSW6M,
        AUD6MBBSW6M,
        AUD6MBBSW6M,
        AUD6MBBSW6M
      };
  /** Tenors for the Fwd 3M USD curve */
  private static final Period[] FWD6_AUD_TENOR =
      new Period[] {
        Period.ofMonths(0),
        Period.ofYears(1),
        Period.ofYears(2),
        Period.ofYears(3),
        Period.ofYears(5),
        Period.ofYears(7),
        Period.ofYears(10)
      };

  private static final GeneratorAttributeIR[] FWD6_AUD_ATTR =
      new GeneratorAttributeIR[FWD6_AUD_TENOR.length];

  static {
    for (int loopins = 0; loopins < FWD6_AUD_TENOR.length; loopins++) {
      FWD6_AUD_ATTR[loopins] = new GeneratorAttributeIR(FWD6_AUD_TENOR[loopins]);
    }
  }

  /** Standard USD discounting curve instrument definitions */
  private static final InstrumentDefinition<?>[] DEFINITIONS_DSC_AUD;
  /** Standard USD Forward 3M curve instrument definitions */
  private static final InstrumentDefinition<?>[] DEFINITIONS_FWD3_AUD;
  /** Standard USD Forward 3M curve instrument definitions */
  private static final InstrumentDefinition<?>[] DEFINITIONS_FWD6_AUD;

  /** Units of curves */
  private static final int[] NB_UNITS = new int[] {2, 1};

  private static final int NB_BLOCKS = NB_UNITS.length;
  private static final InstrumentDefinition<?>[][][][] DEFINITIONS_UNITS =
      new InstrumentDefinition<?>[NB_BLOCKS][][][];
  private static final GeneratorYDCurve[][][] GENERATORS_UNITS =
      new GeneratorYDCurve[NB_BLOCKS][][];
  private static final String[][][] NAMES_UNITS = new String[NB_BLOCKS][][];
  private static final MulticurveProviderDiscount KNOWN_DATA =
      new MulticurveProviderDiscount(FX_MATRIX);
  private static final LinkedHashMap<String, Currency> DSC_MAP = new LinkedHashMap<>();
  private static final LinkedHashMap<String, IndexON[]> FWD_ON_MAP = new LinkedHashMap<>();
  private static final LinkedHashMap<String, IborIndex[]> FWD_IBOR_MAP = new LinkedHashMap<>();

  static {
    DEFINITIONS_DSC_AUD = getDefinitions(DSC_AUD_MARKET_QUOTES, DSC_USD_GENERATORS, DSC_AUD_ATTR);
    DEFINITIONS_FWD3_AUD =
        getDefinitions(FWD3_AUD_MARKET_QUOTES, FWD3_AUD_GENERATORS, FWD3_AUD_ATTR);
    DEFINITIONS_FWD6_AUD =
        getDefinitions(FWD6_AUD_MARKET_QUOTES, FWD6_AUD_GENERATORS, FWD6_AUD_ATTR);
    for (int loopblock = 0; loopblock < NB_BLOCKS; loopblock++) {
      DEFINITIONS_UNITS[loopblock] = new InstrumentDefinition<?>[NB_UNITS[loopblock]][][];
      GENERATORS_UNITS[loopblock] = new GeneratorYDCurve[NB_UNITS[loopblock]][];
      NAMES_UNITS[loopblock] = new String[NB_UNITS[loopblock]][];
    }
    DEFINITIONS_UNITS[0][0] = new InstrumentDefinition<?>[][] {DEFINITIONS_DSC_AUD};
    DEFINITIONS_UNITS[0][1] =
        new InstrumentDefinition<?>[][] {DEFINITIONS_FWD3_AUD, DEFINITIONS_FWD6_AUD};
    DEFINITIONS_UNITS[1][0] =
        new InstrumentDefinition<?>[][] {
          DEFINITIONS_DSC_AUD, DEFINITIONS_FWD3_AUD, DEFINITIONS_FWD6_AUD
        };
    final GeneratorYDCurve genIntLin =
        new GeneratorCurveYieldInterpolated(MATURITY_CALCULATOR, INTERPOLATOR_LINEAR);
    GENERATORS_UNITS[0][0] = new GeneratorYDCurve[] {genIntLin};
    GENERATORS_UNITS[0][1] = new GeneratorYDCurve[] {genIntLin, genIntLin};
    GENERATORS_UNITS[1][0] = new GeneratorYDCurve[] {genIntLin, genIntLin, genIntLin};
    NAMES_UNITS[0][0] = new String[] {CURVE_NAME_DSC_AUD};
    NAMES_UNITS[0][1] = new String[] {CURVE_NAME_FWD3_AUD, CURVE_NAME_FWD6_AUD};
    NAMES_UNITS[1][0] = new String[] {CURVE_NAME_DSC_AUD, CURVE_NAME_FWD3_AUD, CURVE_NAME_FWD6_AUD};
    DSC_MAP.put(CURVE_NAME_DSC_AUD, AUD);
    FWD_ON_MAP.put(CURVE_NAME_DSC_AUD, new IndexON[] {INDEX_ON_AUD});
    FWD_IBOR_MAP.put(CURVE_NAME_FWD3_AUD, new IborIndex[] {AUDBB3M});
    FWD_IBOR_MAP.put(CURVE_NAME_FWD6_AUD, new IborIndex[] {AUDBB6M});
  }

  @SuppressWarnings({"rawtypes", "unchecked"})
  public static InstrumentDefinition<?>[] getDefinitions(
      final double[] marketQuotes,
      final GeneratorInstrument[] generators,
      final GeneratorAttribute[] attribute) {
    final InstrumentDefinition<?>[] definitions = new InstrumentDefinition<?>[marketQuotes.length];
    for (int loopmv = 0; loopmv < marketQuotes.length; loopmv++) {
      definitions[loopmv] =
          generators[loopmv].generateInstrument(
              NOW, marketQuotes[loopmv], NOTIONAL, attribute[loopmv]);
    }
    return definitions;
  }

  private static List<Pair<MulticurveProviderDiscount, CurveBuildingBlockBundle>>
      CURVES_PAR_SPREAD_MQ_WITHOUT_TODAY_BLOCK = new ArrayList<>();

  // Calculator
  private static final PresentValueDiscountingCalculator PVC =
      PresentValueDiscountingCalculator.getInstance();
  private static final ParSpreadMarketQuoteDiscountingCalculator PSMQC =
      ParSpreadMarketQuoteDiscountingCalculator.getInstance();
  private static final ParSpreadMarketQuoteCurveSensitivityDiscountingCalculator PSMQCSC =
      ParSpreadMarketQuoteCurveSensitivityDiscountingCalculator.getInstance();

  private static final MulticurveDiscountBuildingRepository CURVE_BUILDING_REPOSITORY =
      new MulticurveDiscountBuildingRepository(TOLERANCE_ROOT, TOLERANCE_ROOT, STEP_MAX);

  private static final double TOLERANCE_CAL = 1.0E-9;

  @BeforeSuite
  static void initClass() {
    for (int loopblock = 0; loopblock < NB_BLOCKS; loopblock++) {
      CURVES_PAR_SPREAD_MQ_WITHOUT_TODAY_BLOCK.add(
          makeCurvesFromDefinitions(
              DEFINITIONS_UNITS[loopblock],
              GENERATORS_UNITS[loopblock],
              NAMES_UNITS[loopblock],
              KNOWN_DATA,
              PSMQC,
              PSMQCSC,
              false));
    }
  }

  @Test
  public void curveConstruction() {
    for (int loopblock = 0; loopblock < NB_BLOCKS; loopblock++) {
      curveConstructionTest(
          DEFINITIONS_UNITS[loopblock],
          CURVES_PAR_SPREAD_MQ_WITHOUT_TODAY_BLOCK.get(loopblock).getFirst(),
          false,
          loopblock);
    }
  }

  @Test
  public void comparison1Unit2Units() {
    final MulticurveProviderDiscount[] units = new MulticurveProviderDiscount[2];
    final CurveBuildingBlockBundle[] bb = new CurveBuildingBlockBundle[2];
    final YieldAndDiscountCurve[] curveDsc = new YieldAndDiscountCurve[2];
    final YieldAndDiscountCurve[] curveFwd = new YieldAndDiscountCurve[2];
    for (int loopblock = 0; loopblock < 2; loopblock++) {
      units[loopblock] = CURVES_PAR_SPREAD_MQ_WITHOUT_TODAY_BLOCK.get(loopblock).getFirst();
      bb[loopblock] = CURVES_PAR_SPREAD_MQ_WITHOUT_TODAY_BLOCK.get(loopblock).getSecond();
      curveDsc[loopblock] = units[loopblock].getCurve(AUD);
      curveFwd[loopblock] = units[loopblock].getCurve(AUDBB3M);
    }
    assertEquals(
        "Curve construction: 1 unit / 2 units ",
        curveDsc[0].getNumberOfParameters(),
        curveDsc[1].getNumberOfParameters());
    assertEquals(
        "Curve construction: 1 unit / 2 units ",
        curveFwd[0].getNumberOfParameters(),
        curveFwd[1].getNumberOfParameters());
    assertArrayEquals(
        "Curve construction: 1 unit / 2 units ",
        ArrayUtils.toPrimitive(((YieldCurve) curveDsc[0]).getCurve().getXData()),
        ArrayUtils.toPrimitive(((YieldCurve) curveDsc[1]).getCurve().getXData()),
        TOLERANCE_CAL);
    assertArrayEquals(
        "Curve construction: 1 unit / 2 units ",
        ArrayUtils.toPrimitive(((YieldCurve) curveDsc[0]).getCurve().getYData()),
        ArrayUtils.toPrimitive(((YieldCurve) curveDsc[1]).getCurve().getYData()),
        TOLERANCE_CAL);
    assertArrayEquals(
        "Curve construction: 1 unit / 2 units ",
        ArrayUtils.toPrimitive(((YieldCurve) curveFwd[0]).getCurve().getXData()),
        ArrayUtils.toPrimitive(((YieldCurve) curveFwd[1]).getCurve().getXData()),
        TOLERANCE_CAL);
    assertArrayEquals(
        "Curve construction: 1 unit / 2 units ",
        ArrayUtils.toPrimitive(((YieldCurve) curveFwd[0]).getCurve().getYData()),
        ArrayUtils.toPrimitive(((YieldCurve) curveFwd[1]).getCurve().getYData()),
        TOLERANCE_CAL);

    assertEquals(
        "Curve construction: 1 unit / 2 units ",
        bb[0].getBlock(CURVE_NAME_FWD3_AUD).getFirst(),
        bb[1].getBlock(CURVE_NAME_FWD3_AUD).getFirst());
    // Test note: the discounting curve building blocks are not the same; in one case both curves
    // are build together in the other one after the other.
    final int nbLineDsc = bb[0].getBlock(CURVE_NAME_DSC_AUD).getSecond().getNumberOfRows();
    final int nbLineFwd3 = bb[0].getBlock(CURVE_NAME_FWD3_AUD).getSecond().getNumberOfRows();
    final int nbLineFwd6 = bb[0].getBlock(CURVE_NAME_FWD6_AUD).getSecond().getNumberOfRows();
    assertEquals(
        "Curve construction: 1 unit / 2 units ",
        bb[1].getBlock(CURVE_NAME_DSC_AUD).getSecond().getNumberOfRows(),
        nbLineDsc);
    assertEquals(
        "Curve construction: 1 unit / 2 units ",
        bb[1].getBlock(CURVE_NAME_FWD3_AUD).getSecond().getNumberOfRows(),
        nbLineFwd3);
    assertEquals(
        "Curve construction: 1 unit / 2 units ",
        bb[1].getBlock(CURVE_NAME_FWD6_AUD).getSecond().getNumberOfRows(),
        nbLineFwd6);
  }

  // TODO: test on the correctness of the Jacobian matrix in the CurveBuildingBlock's.

  @Test(enabled = false)
  public void performance() {
    long startTime, endTime;
    final int nbTest = 100;

    startTime = System.currentTimeMillis();
    for (int looptest = 0; looptest < nbTest; looptest++) {
      makeCurvesFromDefinitions(
          DEFINITIONS_UNITS[0],
          GENERATORS_UNITS[0],
          NAMES_UNITS[0],
          KNOWN_DATA,
          PSMQC,
          PSMQCSC,
          false);
    }
    endTime = System.currentTimeMillis();
    System.out.println(
        nbTest + " x 3 curves construction / 2 units: " + (endTime - startTime) + " ms");
    // Performance note: Curve construction 2 units: 08-Nov-12: On Mac Pro 3.2 GHz Quad-Core Intel
    // Xeon: 810 ms for 100 sets.

    startTime = System.currentTimeMillis();
    for (int looptest = 0; looptest < nbTest; looptest++) {
      makeCurvesFromDefinitions(
          DEFINITIONS_UNITS[1],
          GENERATORS_UNITS[1],
          NAMES_UNITS[1],
          KNOWN_DATA,
          PSMQC,
          PSMQCSC,
          false);
    }
    endTime = System.currentTimeMillis();
    System.out.println(
        nbTest + " x 3 curves construction / 1 unit: " + (endTime - startTime) + " ms");
    // Performance note: Curve construction 1 unit: 08-Nov-12: On Mac Pro 3.2 GHz Quad-Core Intel
    // Xeon: 995 ms for 100 sets.

  }

  public void curveConstructionTest(
      final InstrumentDefinition<?>[][][] definitions,
      final MulticurveProviderDiscount curves,
      final boolean withToday,
      final int block) {
    final int nbBlocks = definitions.length;
    for (int loopblock = 0; loopblock < nbBlocks; loopblock++) {
      final InstrumentDerivative[][] instruments = convert(definitions[loopblock], withToday);
      final double[][] pv = new double[instruments.length][];
      for (int loopcurve = 0; loopcurve < instruments.length; loopcurve++) {
        pv[loopcurve] = new double[instruments[loopcurve].length];
        for (int loopins = 0; loopins < instruments[loopcurve].length; loopins++) {
          pv[loopcurve][loopins] =
              curves
                  .getFxRates()
                  .convert(instruments[loopcurve][loopins].accept(PVC, curves), AUD)
                  .getAmount();
          assertEquals(
              "Curve construction: block "
                  + block
                  + ", unit "
                  + loopblock
                  + " - instrument "
                  + loopins,
              0,
              pv[loopcurve][loopins],
              TOLERANCE_CAL);
        }
      }
    }
  }

  @Test(enabled = false)
  /** Analyzes the shape of the forward curve. */
  public void forwardAnalysis() {
    final MulticurveProviderInterface marketDsc =
        CURVES_PAR_SPREAD_MQ_WITHOUT_TODAY_BLOCK.get(0).getFirst();
    final int jump = 1;
    final int startIndex = 0;
    final int nbDate = 2750;
    ZonedDateTime startDate =
        ScheduleCalculator.getAdjustedDate(NOW, AUDBB3M.getSpotLag() + startIndex * jump, SYD);
    final double[] rateDsc = new double[nbDate];
    final double[] startTime = new double[nbDate];
    try {
      final FileWriter writer = new FileWriter("fwd-dsc.csv");
      for (int loopdate = 0; loopdate < nbDate; loopdate++) {
        startTime[loopdate] = TimeCalculator.getTimeBetween(NOW, startDate);
        final ZonedDateTime endDate = ScheduleCalculator.getAdjustedDate(startDate, AUDBB3M, SYD);
        final double endTime = TimeCalculator.getTimeBetween(NOW, endDate);
        final double accrualFactor = AUDBB3M.getDayCount().getDayCountFraction(startDate, endDate);
        rateDsc[loopdate] =
            marketDsc.getForwardRate(AUDBB3M, startTime[loopdate], endTime, accrualFactor);
        startDate = ScheduleCalculator.getAdjustedDate(startDate, jump, SYD);
        writer.append(0.0 + "," + startTime[loopdate] + "," + rateDsc[loopdate] + "\n");
      }
      writer.flush();
      writer.close();
    } catch (final IOException e) {
      e.printStackTrace();
    }
  }

  @SuppressWarnings("unchecked")
  private static Pair<MulticurveProviderDiscount, CurveBuildingBlockBundle>
      makeCurvesFromDefinitions(
          final InstrumentDefinition<?>[][][] definitions,
          final GeneratorYDCurve[][] curveGenerators,
          final String[][] curveNames,
          final MulticurveProviderDiscount knownData,
          final InstrumentDerivativeVisitor<MulticurveProviderInterface, Double> calculator,
          final InstrumentDerivativeVisitor<MulticurveProviderInterface, MulticurveSensitivity>
              sensitivityCalculator,
          final boolean withToday) {
    final int nUnits = curveGenerators.length;
    final MultiCurveBundle<GeneratorYDCurve>[] curveBundles = new MultiCurveBundle[nUnits];
    for (int i = 0; i < nUnits; i++) {
      final int nCurves = definitions[i].length;
      final SingleCurveBundle<GeneratorYDCurve>[] singleCurves = new SingleCurveBundle[nCurves];
      for (int j = 0; j < nCurves; j++) {
        final int nInstruments = definitions[i][j].length;
        final InstrumentDerivative[] derivatives = new InstrumentDerivative[nInstruments];
        final double[] initialGuess = new double[nInstruments];
        for (int k = 0; k < nInstruments; k++) {
          derivatives[k] = convert(definitions[i][j][k], withToday);
          initialGuess[k] = initialGuess(definitions[i][j][k]);
        }
        final GeneratorYDCurve generator = curveGenerators[i][j].finalGenerator(derivatives);
        singleCurves[j] =
            new SingleCurveBundle<>(curveNames[i][j], derivatives, initialGuess, generator);
      }
      curveBundles[i] = new MultiCurveBundle<>(singleCurves);
    }
    return CURVE_BUILDING_REPOSITORY.makeCurvesFromDerivatives(
        curveBundles,
        knownData,
        DSC_MAP,
        FWD_IBOR_MAP,
        FWD_ON_MAP,
        calculator,
        sensitivityCalculator);
  }

  private static InstrumentDerivative[][] convert(
      final InstrumentDefinition<?>[][] definitions, final boolean withToday) {
    final InstrumentDerivative[][] instruments = new InstrumentDerivative[definitions.length][];
    for (int loopcurve = 0; loopcurve < definitions.length; loopcurve++) {
      instruments[loopcurve] = new InstrumentDerivative[definitions[loopcurve].length];
      int loopins = 0;
      for (final InstrumentDefinition<?> instrument : definitions[loopcurve]) {
        InstrumentDerivative ird;
        if (instrument instanceof SwapFixedONDefinition) {
          ird = ((SwapFixedONDefinition) instrument).toDerivative(NOW, getTSSwapFixedON(withToday));
        } else {
          if (instrument instanceof SwapFixedIborDefinition) {
            ird =
                ((SwapFixedIborDefinition) instrument)
                    .toDerivative(NOW, getTSSwapFixedIbor(withToday));
          } else {
            if (instrument instanceof SwapIborIborDefinition) {
              ird =
                  ((SwapIborIborDefinition) instrument)
                      .toDerivative(NOW, getTSSwapIborIbor(withToday));
            } else {
              ird = instrument.toDerivative(NOW);
            }
          }
        }
        instruments[loopcurve][loopins++] = ird;
      }
    }
    return instruments;
  }

  private static InstrumentDerivative convert(
      final InstrumentDefinition<?> instrument, final boolean withToday) {
    InstrumentDerivative ird;
    if (instrument instanceof SwapFixedONDefinition) {
      ird = ((SwapFixedONDefinition) instrument).toDerivative(NOW, getTSSwapFixedON(withToday));
    } else {
      if (instrument instanceof SwapFixedIborDefinition) {
        ird =
            ((SwapFixedIborDefinition) instrument).toDerivative(NOW, getTSSwapFixedIbor(withToday));
      } else {
        if (instrument instanceof SwapIborIborDefinition) {
          ird =
              ((SwapIborIborDefinition) instrument).toDerivative(NOW, getTSSwapIborIbor(withToday));
        } else {
          ird = instrument.toDerivative(NOW);
        }
      }
    }
    return ird;
  }

  private static ZonedDateTimeDoubleTimeSeries[] getTSSwapFixedON(final Boolean withToday) {
    return withToday ? TS_FIXED_OIS_AUD_WITH_TODAY : TS_FIXED_OIS_AUD_WITHOUT_TODAY;
  }

  private static ZonedDateTimeDoubleTimeSeries[] getTSSwapFixedIbor(final Boolean withToday) {
    return withToday
        ? TS_FIXED_IBOR_AUD3M_WITH_TODAY
        : TS_FIXED_IBOR_AUD3M_WITHOUT_TODAY; // TODO: get the correct fixing
  }

  private static ZonedDateTimeDoubleTimeSeries[] getTSSwapIborIbor(final Boolean withToday) {
    return withToday ? TS_FIXED_IBOR_AUD3M6M_WITH_TODAY : TS_FIXED_IBOR_AUD3M6M_WITHOUT_TODAY;
  }

  private static double initialGuess(final InstrumentDefinition<?> instrument) {
    if (instrument instanceof SwapFixedONDefinition) {
      return ((SwapFixedONDefinition) instrument).getFixedLeg().getNthPayment(0).getRate();
    }
    if (instrument instanceof SwapFixedIborDefinition) {
      return ((SwapFixedIborDefinition) instrument).getFixedLeg().getNthPayment(0).getRate();
    }
    if (instrument instanceof ForwardRateAgreementDefinition) {
      return ((ForwardRateAgreementDefinition) instrument).getRate();
    }
    if (instrument instanceof CashDefinition) {
      return ((CashDefinition) instrument).getRate();
    } // TODO: What about basis swaps?
    return 0.01;
  }
}