public void PriceReductionForAge_ReducesValuation_BasedOnAge()
{
var baseValuation = 45000;
// arrange
var resultAge0ExpectedResult = 36000;
var resultAge1ExpectedResult = 34200;
var resultAge2ExpectedResult = 32490;
var resultAge4ExpectedResult = (decimal)29322.23;
var resultAge10ExpectedResult = (decimal)21554.53;
var resultAge15ExpectedResult = (decimal)16678.48;
ValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var resultAge0 = decimal.Round(valuationService.PriceReductionForAge(0, baseValuation), 2, MidpointRounding.AwayFromZero);
var resultAge1 = decimal.Round(valuationService.PriceReductionForAge(1, baseValuation), 2, MidpointRounding.AwayFromZero);
var resultAge2 = decimal.Round(valuationService.PriceReductionForAge(2, baseValuation), 2, MidpointRounding.AwayFromZero);
var resultAge4 = decimal.Round(valuationService.PriceReductionForAge(4, baseValuation), 2, MidpointRounding.AwayFromZero);
var resultAge10 = decimal.Round(valuationService.PriceReductionForAge(10, baseValuation), 2, MidpointRounding.AwayFromZero);
var resultAge15 = decimal.Round(valuationService.PriceReductionForAge(15, baseValuation), 2, MidpointRounding.AwayFromZero);
// assert
Assert.AreEqual(resultAge0ExpectedResult, resultAge0);
Assert.AreEqual(resultAge1ExpectedResult, resultAge1);
Assert.AreEqual(resultAge2ExpectedResult, resultAge2);
Assert.AreEqual(resultAge4ExpectedResult, resultAge4);
Assert.AreEqual(resultAge10ExpectedResult, resultAge10);
Assert.AreEqual(resultAge15ExpectedResult, resultAge15);
}
public void Generate_ReducesValuation_BasedOnMileage()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 10000;
decimal expectedValue = 17952.11M;
var ageEvaluationCalculator = new AgeEvaluationCalculator(GetAgeEvaluationStrategies());
var mileageEvaluationCalculator = new MileageEvaluationCalculator(GetMileageStrategies());
Vehicle vehicle = new Vehicle()
{
AgeInYears = 10,
BaseValuation = 30000,
Derivative = "ZETEC",
Manufacturer = "FORD",
Model = "FIESTA",
RegPlate = "MA53JRO"
};
Mock <IVehicleFinder> vehicleFinder = new Mock <IVehicleFinder>();
vehicleFinder.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(vehicleFinder.Object,
ageEvaluationCalculator,
mileageEvaluationCalculator);
// act
var result = valuationService.Generate(regPlate, mileage);
// assert
Assert.AreEqual(expectedValue, result.PriceOffered);
}
public void When_Generate_Called_And_Evaluation_ForVehicle_Becomes_Negative_Then_It_Should_Return_MinimumEvaluationValue()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 10000;
var ageEvaluationCalculator = new AgeEvaluationCalculator(GetAgeEvaluationStrategies());
var mileageEvaluationCalculator = new MileageEvaluationCalculator(GetMileageStrategies());
Vehicle vehicle = new Vehicle()
{
AgeInYears = 30,
BaseValuation = 10,
Derivative = "ZETEC",
Manufacturer = "FORD",
Model = "FIESTA",
RegPlate = "MA53JRO"
};
var expectedValue = 250.0m;
Mock <IVehicleFinder> vehicleFinder = new Mock <IVehicleFinder>();
vehicleFinder.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(vehicleFinder.Object,
ageEvaluationCalculator,
mileageEvaluationCalculator);
// act
var result = valuationService.Generate(regPlate, mileage);
// assert
Assert.AreEqual(expectedValue, result.PriceOffered);
}
public void When_Generate_Called_With_NullBaseValue_ForVehicle_Should_Return_UnableToEvaluate()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 10000;
var ageEvaluationCalculator = new AgeEvaluationCalculator(GetAgeEvaluationStrategies());
var mileageEvaluationCalculator = new MileageEvaluationCalculator(GetMileageStrategies());
Vehicle vehicle = new Vehicle()
{
AgeInYears = 10,
BaseValuation = null,
};
var expectedValue = ErrorTypes.UnableToEvaluate;
Mock <IVehicleFinder> vehicleFinder = new Mock <IVehicleFinder>();
vehicleFinder.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(vehicleFinder.Object,
ageEvaluationCalculator,
mileageEvaluationCalculator);
// act
var result = valuationService.Generate(regPlate, mileage);
// assert
Assert.AreEqual(expectedValue, result.Errors.First());
}
public void Generate_VehicleIsNull_ReturnsCannotIdentifyErrorMessage()
{
// arrange
string regPlate = "LP64NNV";
int mileage = 18000;
_vehicleFinderMock.Setup(x => x.FindByRegPlate(regPlate));
IValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var result = valuationService.Generate(regPlate, mileage);
var expectedErrorMessage = "we can't identify the car";
Assert.IsTrue(result.Errors.Contains(expectedErrorMessage));
}
public void Generate_VehicleIsLessThanMinimum_Returns250()
{
// arrange
string regPlate = "MA53JRO";
int mileAge = 200000;
var vehicle = GetVehicle(15000, 3);
_vehicleFinderMock.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var result = valuationService.Generate(regPlate, mileAge);
// assert
Assert.AreEqual(250, result.PriceOffered);
}
public void Generate_VehicleValuation_ReturnsNewPrice()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 100000;
var expectedPrice = (decimal)17243.62;
var vehicle = GetVehicle(40000, 10);
_vehicleFinderMock.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var result = valuationService.Generate(regPlate, mileage);
// assert
Assert.AreEqual(expectedPrice, result.PriceOffered);
}
public void Generate_VehicleBaseValueIsNull_ReturnsCannotValueErrorMessage()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 10000;
Vehicle vehicle = GetVehicle(null, 10);
_vehicleFinderMock.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var result = valuationService.Generate(regPlate, mileage);
var expectedErrorMessage = "we can't value a car!";
// assert
Assert.IsTrue(result.Errors.Contains(expectedErrorMessage));
}
public void PriceReductionForMileage_ReducesValuation_BasedOnMileageAges()
{
// arrange
int mileage = 50000;
var vehicleLessThan3YearsOldExpectedResult = 33750;
var vehicleLessThan9YearsOldExpectedResult = 38250;
var vehicleGreaterThan10YearsOldExpectedResult = 42750;
ValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var resultLessThan3YearsOld = valuationService.PriceReductionForMileage(mileage, 3, 45000);
var resultLessThan9YearsOld = valuationService.PriceReductionForMileage(mileage, 9, 45000);
var resultGreaterThan10YearsOld = valuationService.PriceReductionForMileage(mileage, 12, 45000);
// assert
Assert.AreEqual(vehicleLessThan3YearsOldExpectedResult, resultLessThan3YearsOld);
Assert.AreEqual(vehicleLessThan9YearsOldExpectedResult, resultLessThan9YearsOld);
Assert.AreEqual(vehicleGreaterThan10YearsOldExpectedResult, resultGreaterThan10YearsOld);
}
public void Generate_ReturnsPopulatedValuation()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 100000;
var vehicle = GetVehicle(40000, 10);
_vehicleFinderMock.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(_vehicleFinderMock.Object, _minimumValuation);
// act
var result = valuationService.Generate(regPlate, mileage);
// assert
Assert.IsInstanceOfType(result, typeof(Valuation));
Assert.AreEqual(mileage, result.Mileage);
Assert.AreEqual(regPlate, result.RegPlate);
Assert.IsNotNull(result.AgeInYears);
Assert.IsNotNull(result.PriceOffered);
}
public void Generate_ReturnsPopulatedValuation()
{
// arrange
string regPlate = "MA53JRO";
int mileage = 10000;
var ageEvaluationCalculator = new AgeEvaluationCalculator(GetAgeEvaluationStrategies());
var mileageEvaluationCalculator = new MileageEvaluationCalculator(GetMileageStrategies());
Vehicle vehicle = new Vehicle()
{
AgeInYears = 10,
BaseValuation = 40000,
Derivative = "ZETEC",
Manufacturer = "FORD",
Model = "FIESTA",
RegPlate = "MA53JRO"
};
Mock <IVehicleFinder> vehicleFinder = new Mock <IVehicleFinder>();
vehicleFinder.Setup(x => x.FindByRegPlate(regPlate)).Returns(vehicle);
IValuationEngine valuationService = new ValuationEngine(vehicleFinder.Object,
ageEvaluationCalculator,
mileageEvaluationCalculator);
// act
var result = valuationService.Generate(regPlate, mileage);
// assert
Assert.IsInstanceOfType(result, typeof(Valuation));
Assert.AreEqual(mileage, result.Mileage);
Assert.AreEqual(regPlate, result.RegPlate);
Assert.IsNotNull(result.AgeInYears);
Assert.IsNotNull(result.PriceOffered);
}
