public static decimal CalculateStampDuty(StampDutyRate stampDutyRate, decimal amount)
{
var duty = MultipleCount(stampDutyRate.ForEvery, amount) * stampDutyRate.Amount +
Modulus(stampDutyRate.ForEvery, amount) * stampDutyRate.Amount;
return(Math.Min(duty, stampDutyRate.MaxAmount));
}
public Calculator(BrokerageFeeRate brokerageFeeRate, ClearingFeeRate clearingFeeRate,
StampDutyRate stampDutyRate, SalesServiceTaxRate taxRate)
{
this.brokerageFeeRate = brokerageFeeRate;
this.clearingFeeRate = clearingFeeRate;
this.stampDutyRate = stampDutyRate;
this.taxRate = taxRate;
}
public void CalculateStampDuty_with_500_returns_expected_result(StampDutyRate stampDutyRate)
{
var sut = new Func <StampDutyRate, decimal, decimal>(StampDutyExtensions.CalculateStampDuty);
var result = sut(stampDutyRate, 500);
result.Should().Be(1);
}
public void Calculate_returns_expected_result(BrokerageFeeRate brokerageFeeRate,
ClearingFeeRate clearingFeeRate,
StampDutyRate stampDutyRate, SalesServiceTaxRate salesServiceTaxRate)
{
var sut = new Calculator(brokerageFeeRate, clearingFeeRate, stampDutyRate, salesServiceTaxRate);
var result = sut.Calculate(1, Lot(1), 1.5m);
result.Profit.Should().Be(50);
}
public static Fee Fee(BrokerageFeeRate brokerageFeeRate, ClearingFeeRate clearingFeeRate, StampDutyRate stampDutyRate,
SalesServiceTaxRate salesServiceTaxRate) =>
new Fee(brokerageFeeRate, clearingFeeRate, stampDutyRate, salesServiceTaxRate);