public void InvalidOperationExceptionShouldBeThrown(decimal monthlyTariffCost, decimal consumptionCost)
{
var tariff = new BasicElectricityTariff
{
Name = string.Empty,
MonthlyTariffCost = monthlyTariffCost,
ConsumptionCost = consumptionCost,
};
Assert.Throws <InvalidOperationException>(() => tariff.CalculateAnnualCosts(1));
}
public void ArgumentOutOfRangeExceptionShouldBeThrown(decimal annualConsumption)
{
var tariff = new BasicElectricityTariff
{
Name = string.Empty,
MonthlyTariffCost = 1,
ConsumptionCost = 1,
};
Assert.Throws <ArgumentOutOfRangeException>(() => tariff.CalculateAnnualCosts(annualConsumption));
}
public void AnnualCostShouldBeCalculatedCorrectly(decimal monthlyTariffCost, decimal consumptionCost,
decimal annualConsumption, decimal expectedAnnualCost)
{
var tariff = new BasicElectricityTariff
{
Name = string.Empty,
MonthlyTariffCost = monthlyTariffCost,
ConsumptionCost = consumptionCost,
};
var actualAnnualCost = tariff.CalculateAnnualCosts(annualConsumption);
Assert.Equal(expectedAnnualCost, actualAnnualCost);
}
