public static IEnumerable <object[]> CalculateCapitalGainData(CgtCalculationMethod method)
{
var p1 = new Parcel(Guid.NewGuid(), new Date(2010, 01, 01), new Date(2019, 01, 01), new ParcelProperties(1000, 1000.00m, 1000.00m), null);
var p2 = new Parcel(Guid.NewGuid(), new Date(2010, 01, 01), new Date(2019, 01, 01), new ParcelProperties(1000, 2000.00m, 2000.00m), null);
var p3 = new Parcel(Guid.NewGuid(), new Date(2010, 01, 01), new Date(2019, 06, 30), new ParcelProperties(1000, 1000.00m, 1000.00m), null);
var p4 = new Parcel(Guid.NewGuid(), new Date(2010, 01, 01), new Date(2019, 06, 30), new ParcelProperties(1000, 2000.00m, 2000.00m), null);
var scenarios = new CapitalGainScenario[]
{
new CapitalGainScenario(new Date(2019, 08, 01), p1, p3, "Parcel 1, no discount before Parcel 2, no discount", -1, 1, -1, -1),
new CapitalGainScenario(new Date(2020, 02, 01), p1, p3, "Parcel 1, discount before Parcel 2, no discount", -1, 1, -1, -1),
new CapitalGainScenario(new Date(2020, 08, 01), p1, p3, "Parcel 1, discount before Parcel 2, discount", -1, 1, -1, -1),
new CapitalGainScenario(new Date(2019, 08, 01), p3, p1, "Parcel 1, no discount after Parcel 2, no discount", 1, -1, 1, 1),
new CapitalGainScenario(new Date(2020, 02, 01), p3, p1, "Parcel 1, no discount after Parcel 2, discount", 1, -1, 1, 1),
new CapitalGainScenario(new Date(2019, 08, 01), p3, p1, "Parcel 1, discount after Parcel 2, discount", 1, -1, 1, 1),
new CapitalGainScenario(new Date(2019, 08, 01), p1, p2, "Parcel 1 same date as Parcel 2", 0, 0, -1, 1),
new CapitalGainScenario(new Date(2019, 08, 01), p4, p1, "Parcel 1, no discount > Parcel 2, no discount", 1, -1, 1, -1),
new CapitalGainScenario(new Date(2020, 02, 01), p4, p1, "Parcel 1, no discount > Parcel 2, discount", 1, -1, 1, 1),
new CapitalGainScenario(new Date(2020, 02, 01), p2, p3, "Parcel 1, discount > Parcel 2, no discount", -1, 1, -1, -1),
new CapitalGainScenario(new Date(2020, 08, 01), p2, p3, "Parcel 1, discount > Parcel 2, discount", -1, 1, 1, -1),
new CapitalGainScenario(new Date(2019, 08, 01), p2, p3, "Parcel 1, no discount < Parcel 2, no discount", -1, 1, 1, -1),
new CapitalGainScenario(new Date(2020, 02, 01), p3, p2, "Parcel 1, no discount < Parcel 2, discount", 1, -1, 1, 1),
new CapitalGainScenario(new Date(2020, 02, 01), p1, p4, "Parcel 1, discount < Parcel 2, no discount", -1, 1, -1, -1),
new CapitalGainScenario(new Date(2020, 08, 01), p1, p4, "Parcel 1, discount < Parcel 2, discount", -1, 1, -1, 1)
};
return(scenarios.Select(x => x.TestData(method)));
}
public object[] TestData(CgtCalculationMethod method)
{
switch (method)
{
case CgtCalculationMethod.FirstInFirstOut:
return(new object[] { DisposalDate, new ParcelPair(Parcel1, Parcel2), FirstInFirstOutResult, "FirstInFirstOut(" + Message + ")" });
case CgtCalculationMethod.LastInFirstOut:
return(new object[] { DisposalDate, new ParcelPair(Parcel1, Parcel2), LastInFirstOutResult, "LastInFirstOut(" + Message + ")" });
case CgtCalculationMethod.MaximizeGain:
return(new object[] { DisposalDate, new ParcelPair(Parcel1, Parcel2), MaximizeGainResult, "MaximizeGain(" + Message + ")" });
case CgtCalculationMethod.MinimizeGain:
return(new object[] { DisposalDate, new ParcelPair(Parcel1, Parcel2), MinimizeGainResult, "MinimizeGain(" + Message + ")" });
default:
return(null);
}
}
public static IComparer <IReadOnlyParcel> GetCgtComparer(Date disposalDate, CgtCalculationMethod method)
{
switch (method)
{
case CgtCalculationMethod.FirstInFirstOut:
return(new FirstInFirstOutCgtComparer());
case CgtCalculationMethod.LastInFirstOut:
return(new LastInFirstOutCgtComparer());
case CgtCalculationMethod.MaximizeGain:
return(new MaximizeGainCgtComparer(disposalDate));
case CgtCalculationMethod.MinimizeGain:
return(new MinimizeGainCgtComparer(disposalDate));
default:
throw new ArgumentException();
}
}
public void DisposeOfShares(Guid stockId, Date disposalDate, int units, decimal averagePrice, decimal transactionCosts, CgtCalculationMethod cgtMethod, bool createCashTransaction, string comment, Guid transactionId)
{
var @event = new DisposalOccurredEvent(Id, Version, transactionId, disposalDate, stockId, comment)
{
Units = units,
AveragePrice = averagePrice,
TransactionCosts = transactionCosts,
CgtMethod = cgtMethod,
CreateCashTransaction = createCashTransaction
};
Apply(@event);
PublishEvent(@event);
}
public void CheckAllCgtMethodsHaveAComparere(CgtCalculationMethod method)
{
var comparer = CgtCalculator.GetCgtComparer(Date.MinValue, method);
comparer.Should().BeAssignableTo <IComparer <Parcel> >();
}
