public void ArgumentOutOfRangeExceptionShouldBeThrown(decimal annualConsumption)
{
var tariff = new PackagedElectricityTariff()
{
Name = string.Empty,
AnnualTariffCost = 1,
AnnualTariffAmount = 1,
ExtraConsumptionCost = 1
};
Assert.Throws <ArgumentOutOfRangeException>(() => tariff.CalculateAnnualCosts(annualConsumption));
}
public void InvalidOperationExceptionShouldBeThrown(decimal annualTariffCost, decimal annualTariffAmount,
decimal extraConsumptionCost)
{
var tariff = new PackagedElectricityTariff()
{
Name = string.Empty,
AnnualTariffCost = annualTariffCost,
AnnualTariffAmount = annualTariffAmount,
ExtraConsumptionCost = extraConsumptionCost
};
Assert.Throws <InvalidOperationException>(() => tariff.CalculateAnnualCosts(1));
}
public void IsAnnualCostCalculatedCorrectly(decimal annualTariffCost, decimal annualTariffAmount,
decimal extraConsumptionCost, decimal annualConsumption, decimal expectedAnnualCost)
{
var tariff = new PackagedElectricityTariff()
{
Name = string.Empty,
AnnualTariffCost = annualTariffCost,
AnnualTariffAmount = annualTariffAmount,
ExtraConsumptionCost = extraConsumptionCost
};
var actualAnnualCost = tariff.CalculateAnnualCosts(annualConsumption);
Assert.Equal(expectedAnnualCost, actualAnnualCost);
}