public void MoreThan20ResultShouldOnlyReturn20Records(
double[] expectedNpvResult, decimal lowerDiscount, decimal upperDiscount,
decimal increment, decimal outflow, double[] inflows)
{
var sut = new NpvCalculator();
//Validation has been tested on project NpvApi.Dtos.Test so will not test again here.
var npvOptions = new NpvOptions
{
RateOption = new RateOption
{
LowerDiscount = lowerDiscount,
UpperDiscount = upperDiscount,
DiscountIncrement = increment
},
Outflow = outflow
};
foreach (var inflow in inflows.ToList())
{
npvOptions.Inflows.Add(new Inflow()
{
Value = (decimal)inflow
});
}
var result = sut.Calculate(npvOptions);
Assert.Equal(20, result.Count);
}
public void ValidInputShouldGetCorrectNpvResults(double[] expectedNpvResult,
decimal lowerDiscount, decimal upperDiscount, decimal increment, decimal outflow,
double[] inflows)
{
var sut = new NpvCalculator();
//Validation testing has been done on project NpvApi.Dtos.Test so will not test again here.
var npvOptions = new NpvOptions
{
RateOption = new RateOption
{
LowerDiscount = lowerDiscount,
UpperDiscount = upperDiscount,
DiscountIncrement = increment
},
Outflow = outflow
};
foreach (var inflow in inflows.ToList())
{
npvOptions.Inflows.Add(new Inflow()
{
Value = (decimal)inflow
});
}
var result = sut.Calculate(npvOptions);
Assert.Equal(expectedNpvResult.Length, result.Count);
for (int i = 0; i < expectedNpvResult.Length; i++)
{
var expected = expectedNpvResult[i];
var actual = (double)result[i].NetPresentValue;
Assert.Equal(expected, actual);
}
}
public void RateIncrement0ShouldOnlyReturn1ResultBack(
double[] expectedNpvResult, decimal lowerDiscount, decimal upperDiscount,
decimal increment, decimal outflow, double[] inflows)
{
//This case need to check the result set which is different than the previous one\
//so just keep it seperate.
var sut = new NpvCalculator();
var npvOptions = new NpvOptions
{
RateOption = new RateOption
{
LowerDiscount = lowerDiscount,
UpperDiscount = upperDiscount,
DiscountIncrement = increment
},
Outflow = outflow
};
foreach (var inflow in inflows.ToList())
{
npvOptions.Inflows.Add(new Inflow()
{
Value = (decimal)inflow
});
}
var result = sut.Calculate(npvOptions);
Assert.Equal(1, result.Count);
var expected = expectedNpvResult.First();
var actual = (double)result.First().NetPresentValue;
Assert.Equal(expected, actual);
}
