public void ShouldScoreApplicationCorrectly()
{
// Create and configure our fakes that we want to use
var fakeMainframe = new Mock<IBankMainframeGateway>();
fakeMainframe.Setup(x => x.CreateNew(It.IsAny<CreditCardApplication>())).Returns(42);
// Create our DI container
var kernel = new StandardKernel();
// Tell the DI container to use the real CreditCheckerGateway
kernel.Bind<ICreditCheckerGateway>().To<CreditCheckerGateway>();
// Tell the DI container to use the fake IBankMainframeGateway
kernel.Bind<IBankMainframeGateway>().ToConstant(fakeMainframe.Object);
// Use the DI container to create the object graph, rather than new keyword
var sut = kernel.Get<CreditCardApplicationScorer>();
var a = new CreditCardApplication
{
ApplicantName = "Jason",
ApplicantAgeInYears = 44,
AirlineFrequentFlyerNumber = "A1234567"
};
var result = sut.ScoreApplication(a);
Assert.That(result, Is.Not.Null);
// Note that this seems more complex than the below. For this example this is true,
// but if we were creating a larger/complex subsystem object graph, then using a DI container
// actually simplifies things.
}
public void ReferFraudRisk()
{
var mockFraudLookup = new Mock <FraudLookup>();
// mockFraudLookup.Setup(x => x.IsFraudRisk(It.IsAny<CreditCardApplication>())).Returns(true);
mockFraudLookup.Protected().Setup <bool>("CheckApplication", ItExpr.IsAny <CreditCardApplication>()).Returns(true);
_sut = new CreditCardApplicationEvaluator(_mockValidator.Object, mockFraudLookup.Object);
var app = new CreditCardApplication();
var decision = _sut.Evaluate(app);
Assert.Equal(CreditCardApplicationDecision.ReferredToHumanFraudRisk, decision);
}
public void AcceptHighIncomeApplications(
[Frozen] Mock <IFrequentFlyerNumberValidator> mock,
CreditCardApplication application,
CreditCardApplicationEvaluator sut)
{
SetupDefaultValuesFor(mock);
application.GrossAnnualIncome = 100_000;
var decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.AutoAccepted, decision);
}
public void SetDetailedLookupForOlderApplications(
[Frozen] Mock <IFrequentFlyerNumberValidator> mock,
CreditCardApplication application,
CreditCardApplicationEvaluator sut)
{
SetupDefaultValuesFor(mock);
application.Age = 30;
sut.Evaluate(application);
mock.VerifySet(x => x.ValidationMode = It.IsAny <ValidationMode>(),
Times.Once);
}
public void ReferYoungApplications(
[Frozen] Mock <IFrequentFlyerNumberValidator> mock,
CreditCardApplication application,
CreditCardApplicationEvaluator sut)
{
SetupDefaultValuesFor(mock);
application.Age = 19;
var decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void ReferInvalidFrequentFlyerNumbers()
{
_mockValidator.Setup(x => x.IsValid(It.IsAny <string>())).Returns(false);
var application = new CreditCardApplication();
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, _sut.Evaluate(application));
// Fail the test if the mock object is not called once
_mockValidator.Verify(x => x.IsValid(It.IsAny <string>()), Times.Once);
}
public void ReferInvalidFrequentFlyerApplications()
{
mockValidator
.Setup(x => x.IsValid(It.IsAny <string>()))
.Returns(false);
var application = new CreditCardApplication();
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void AcceptAllHighIncomeApplicants(int income)
{
//var sut = new CreditCardApplicationEvaluator(new FrequentFlyerNumberValidator());
var application = new CreditCardApplication
{
GrossAnnualIncome = income
};
Assert.Equal(CreditCardApplicationDecision.AutoAccepted,
_sut.Evaluate(application));
}
public void ReferYoungApplications()
{
var sut = new CreditCardApplicationEvaluator(null);
var application = new CreditCardApplication {
Age = 19
};
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public async Task AddAsync(CreditCardApplication application)
{
try
{
_db.CreditCardApplications.Add(application);
await _db.SaveChangesAsync();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
public void DetailedValidationsForOlderCustomerApplication()
{
mockValidator.SetupProperty(x => x.ValidationMode);
var application = new CreditCardApplication()
{
Age = 42
};
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(ValidationMode.Detailed, mockValidator.Object.ValidationMode);
}
public void ReferYoungApplications()
{
validator.DefaultValue = DefaultValue.Mock;
var application = new CreditCardApplication {
Age = 19
};
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void ValidateFrequentFlyerNumberForLowIncomeApplications()
{
Mock <IFrequentFlyerNumberValidator> mockValidator = new Mock <IFrequentFlyerNumberValidator>();
mockValidator.Setup(x => x.License).Returns("OK");
var sut = new CreditCardApplicationEvaluator(mockValidator.Object);
var crediCardApplication = new CreditCardApplication();
sut.Evaluate(crediCardApplication);
mockValidator.Verify(x => x.IsValid(null), Times.Once);
}
public void ReferWhenFrequentFlyerValidationError()
{
mockValidator.Setup(x => x.IsValid(It.IsAny <string>())).Throws <Exception>();
var application = new CreditCardApplication {
Age = 42
};
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void AcceptAllHighIncomeApplicants(int income)
{
var sut = new CreditCardApplicationEvaluator();
var application = new CreditCardApplication
{
GrossAnnualIncome = income
};
Assert.Equal(CreditCardApplicationDecision.AutoAccepted,
sut.Evaluate(application));
}
public void ReferInvalidFrequestFlerApplications()
{
Mock <IFrequentFlyerNumberValidator> mockValidator =
new Mock <IFrequentFlyerNumberValidator>();
mockValidator.Setup(x => x.IsValid(It.IsAny <string>())).Returns(false);
mockValidator.Setup(x => x.serviceInformation.License.LicenseKey).Returns("OK");
var sut = new CreditCardApplicationEvaluator(mockValidator.Object);
var application = new CreditCardApplication();
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void ReferYoungApplications()
{
Mock <IFrequentFlyerNumberValidator> mockValidator = new Mock <IFrequentFlyerNumberValidator>();
mockValidator.Setup(x => x.serviceInformation.License.LicenseKey).Returns("OK");
var sut = new CreditCardApplicationEvaluator(mockValidator.Object);
var application = new CreditCardApplication {
Age = 19
};
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void ReferWhenLicenseKeyExpired()
{
mockValidator.Setup(x => x.ServiceInformation.License.LicenseKey)
.Returns("EXPIRED");
var application = new CreditCardApplication {
Age = 42
};
CreditCardApplicationDecision decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void ShouldValidateFrequentFlayerNumberForLowIncomeApplications_CustomMessage()
{
var application = new CreditCardApplication {
FrequentPlayerNumber = "q"
};
//var application = new CreditCardApplication(); uncomment this to see the test fail and the error message
sut.Evaluate(application);
//Verify that the method IsValid was execute with "q" as parameters
//mockValidator.Verify(x => x.IsValid("q"));
mockValidator.Verify(x => x.IsValid(It.IsNotNull <string>()), "Frequent flayer number should not be null");
}
private SubmissionResult SubmitAValidApplication()
{
var sut = new CreditCardApplicationServiceReference.CreditCardApplicationServiceClient();
var a = new CreditCardApplication
{
ApplicantName = ApplicantName,
ApplicantAgeInYears = 30,
AirlineFrequentFlyerNumber = "A1234567"
};
return sut.SubmitApplication(a);
}
public void ReferInvalidFrequentFlyerApplications()
{
var mockValidator = new Mock <IFrequentFlyerNumberValidator>(MockBehavior.Loose);
mockValidator.Setup(x => x.IsValid(It.IsAny <string>())).Returns(false);
mockValidator.Setup(x => x.ServiceInformation.License.LicenseKey).Returns("12345");
var application = new CreditCardApplication();
var decision = sut.Evaluate(application);
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void ReferYoungApplicantsWhoAreNotHighIncome(int age)
{
var sut = new CreditCardApplicationEvaluator();
var application = new CreditCardApplication
{
GrossAnnualIncome = ExpectedHighIncomeThreshhold - 1,
Age = age
};
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman,
sut.Evaluate(application));
}
public void SetDetailedLookupForOlderApplication()
{
var application = new CreditCardApplication
{
Age = 30
};
sut.Evaluate(application);
mockValidator.VerifySet(x => x.ValidationMode = ValidationMode.Detailed);
//mockValidator.VerifyNoOtherCalls();
}
public void CreditCardApplication_AgeReferedWhenUnder20()
{
// Arrange
var _application = new CreditCardApplication {
GrossAnnualIncome = 35452m, Age = 20, FrequentFlyerNumber = "test"
};
// Act
CreditCardApplicationDecision decision = sut.Evaluate(_application);
// Assert
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman, decision);
}
public void UseDeyailedLookupForOlderApplications()
{
//mockValidator.SetupAllProperties();
//mockValidator.SetupProperty(v => v.ValidationMode);
var application = new CreditCardApplication {
Age = 30
};
var decision = sut.Evaluate(application);
Assert.Equal(ValidationMode.Detailed, mockValidator.Object.ValidationMode);
}
public void DeclineAllApplicantsWhoAreLowIncome(int income)
{
var sut = new CreditCardApplicationEvaluator();
var application = new CreditCardApplication
{
GrossAnnualIncome = income,
Age = 21
};
Assert.Equal(CreditCardApplicationDecision.AutoDeclined,
sut.Evaluate(application));
}
public void ValidateFrequentFlyerNumberForLowIncomeApplications()
{
//_mockFrequentFlyerValidator.Setup(x => x.ServiceInformation.License.LicenseKey).Returns("Ok");
//CreditCardApplicationEvaluator sut = new CreditCardApplicationEvaluator(_mockFrequentFlyerValidator.Object);
CreditCardApplication application = new CreditCardApplication {
FrequentFlyerNumber = "q"
};
sut.Evaluate(application);
_mockFrequentFlyerValidator.Verify(x => x.IsValid(It.IsAny <string>()), Times.Once);
}
public void ValidateFrequentFlyerNumberForLowIncomeApplications()
{
mockValidator.Setup(x => x.ServiceInformation.License.LicenseKey).Returns("OK");
var application = new CreditCardApplication
{
FrequentFlyerNumber = "Q"
};
sut.Evaluate(application);
mockValidator.Verify(x => x.IsValid("Q"));
}
private SubmissionResult SubmitAValidApplication()
{
var sut = new CreditCardApplicationServiceReference.CreditCardApplicationServiceClient();
var a = new CreditCardApplication
{
ApplicantName = ApplicantName,
ApplicantAgeInYears = 30,
AirlineFrequentFlyerNumber = "A1234567"
};
return(sut.SubmitApplication(a));
}
public void SetDetailedLookupForOlderApplications()
{
// Arrange
var application = new CreditCardApplication {
Age = 30
};
// Act
this.sut.Evaluate(application);
// Assert
this.mockValidator.VerifySet(x => x.ValidationMode = It.IsAny <ValidationMode>(), Times.Once);
}
public void ShouldDetectInvalidAirlineNumber()
{
var fakeValidator = new Mock<IAirlineMembershipNumberValidator>();
fakeValidator.Setup(x => x.IsValid(It.IsAny<string>())).Returns(false);
var a = new CreditCardApplication();
var sut = new ApplicationDetailsValidator(fakeValidator.Object);
var errors = sut.Validate(a);
Assert.That(errors, Has.Exactly(1).EqualTo("Airline membership number is invalid"));
}
public void UseDetailedLookupForOlderApplications()
{
// Arrange
var application = new CreditCardApplication {
Age = 30
};
// Act
this.sut.Evaluate(application);
// Assert
Assert.Equal(ValidationMode.Detailed, this.mockValidator.Object.ValidationMode);
}
public void ReferNonYoungApplicantsWhoAreMiddleIncome(int income)
{
var sut = new CreditCardApplicationEvaluator();
var application = new CreditCardApplication
{
GrossAnnualIncome = income,
Age = 21
};
Assert.Equal(CreditCardApplicationDecision.ReferredToHuman,
sut.Evaluate(application));
}
public SubmissionResult SubmitApplication(CreditCardApplication application)
{
var sr = new SubmissionResult {ValidationErrors = _validator.Validate(application)};
var isValidApplication = !sr.ValidationErrors.Any();
if (!isValidApplication)
{
return sr;
}
sr.ReferenceNumber = _scorer.ScoreApplication(application);
return sr;
}
public void ShouldDetectUseAirlineValidatorToCheckNumber()
{
var fakeValidator = new Mock<IAirlineMembershipNumberValidator>();
var a = new CreditCardApplication
{
AirlineFrequentFlyerNumber = "x123"
};
var sut = new ApplicationDetailsValidator(fakeValidator.Object);
sut.Validate(a);
fakeValidator.Verify(x => x.IsValid("x123"),Times.Once());
}
public void ShouldDetectBlankName()
{
var fakeValidator = new Mock<IAirlineMembershipNumberValidator>();
var a = new CreditCardApplication
{
ApplicantName=""
};
var sut = new ApplicationDetailsValidator(fakeValidator.Object);
var errors = sut.Validate(a);
Assert.That(errors,Has.Exactly(1).EqualTo("Name cannot be blank."));
}
public void ShouldDeclineUnderAgeApplicant()
{
var fakeGateway = new Mock<ICreditCheckerGateway>();
var sut = new CreditCardApplicationScorer(fakeGateway.Object, null);
var application = new CreditCardApplication
{
ApplicantAgeInYears = 20
};
var result = sut.ScoreApplication(application);
Assert.That(result, Is.Null);
}
public void ShouldValidateInCorrectApplication()
{
// Example of internal classes being integration tested together
var sut = new ApplicationDetailsValidator(new AirlineMembershipNumberValidator());
var a = new CreditCardApplication
{
ApplicantName = "Lisa",
ApplicantAgeInYears = 44,
AirlineFrequentFlyerNumber = "badnumber"
};
var errors = sut.Validate(a);
Assert.That(errors, Is.Not.Empty);
}
public List<string> Validate(CreditCardApplication application)
{
var errors = new List<string>();
if (string.IsNullOrWhiteSpace(application.ApplicantName))
{
errors.Add("Name cannot be blank.");
}
if (! _airlineNumberValidator.IsValid(application.AirlineFrequentFlyerNumber))
{
errors.Add("Airline membership number is invalid");
}
return errors;
}
public int? ScoreApplication(CreditCardApplication application)
{
var isApplicantTooYoung = application.ApplicantAgeInYears < 21;
if (isApplicantTooYoung)
{
return null;
}
var hasGoodCreditHistory = _creditCheckerGateway.HasGoodCreditHistory(application.ApplicantName);
if (!hasGoodCreditHistory)
{
return null;
}
return _mainframeGateway.CreateNew(application);
}
public void ShouldAskGatewayForCreditCheck()
{
var fakeGateway = new Mock<ICreditCheckerGateway>();
var fakeMainframe = new Mock<IBankMainframeGateway>();
var sut = new CreditCardApplicationScorer(fakeGateway.Object, fakeMainframe.Object);
var application = new CreditCardApplication
{
ApplicantAgeInYears = 30,
ApplicantName = "Jason"
};
sut.ScoreApplication(application);
// check that the fake's HasGoodCreditHistory method was called with the parameter "Jason", exactly one time
fakeGateway.Verify(x => x.HasGoodCreditHistory("Jason"),Times.Once());
}
public void ShouldAcceptCorrectAgedApplicantWithGoodCreditHistory()
{
const int expectedMainframeRefNum = 8376;
var fakeGateway = new Mock<ICreditCheckerGateway>();
var fakeMainframe = new Mock<IBankMainframeGateway>();
fakeGateway.Setup(x => x.HasGoodCreditHistory(It.IsAny<string>())).Returns(true);
fakeMainframe.Setup(x => x.CreateNew(It.IsAny<CreditCardApplication>())).Returns(expectedMainframeRefNum);
var sut = new CreditCardApplicationScorer(fakeGateway.Object, fakeMainframe.Object);
var application = new CreditCardApplication
{
ApplicantAgeInYears = 30
};
var result = sut.ScoreApplication(application);
Assert.That(result, Is.EqualTo(expectedMainframeRefNum));
}
public int CreateNew(CreditCardApplication application)
{
// Simulation of interacting with external system
return new Random().Next();
}
