public void Given_AnnumIncome_63900_ShouldReturn_PercentageBasedValue()
{
//----------Setup---------------------------
const double annualIncome = 63900d;
var flatRateTaxCalculator = new FlatRateTaxCalculator(new Mock <IIncomeValidator>().Object);
//--------Execute---------------------------
var tax = flatRateTaxCalculator.Calculate(annualIncome);
//--------Assert----------------------------
Assert.AreEqual(11182.50d, tax);
}
public void Given_AnnumIncome_100000_ShouldReturn_17500()
{
//----------Setup---------------------------
const double annualIncome = 100000d;
var flatRateTaxCalculator = new FlatRateTaxCalculator(new Mock <IIncomeValidator>().Object);
//--------Execute---------------------------
var tax = flatRateTaxCalculator.Calculate(annualIncome);
//--------Assert----------------------------
Assert.AreEqual(17500d, tax);
}
public void Given_Calculate_Should_Call_IncomeValidator_Validate()
{
//----------Setup---------------------------
var mockValidator = new Mock <IIncomeValidator>();
mockValidator.Setup(m => m.Validate(It.IsAny <double>()));
var flatRateTaxCalculator = new FlatRateTaxCalculator(mockValidator.Object);
//--------Execute---------------------------
flatRateTaxCalculator.Calculate(-12547d);
//--------Assert----------------------------
mockValidator.Verify(m => m.Validate(-12547d), Times.Once);
}
public void Given_GetTaxCalculator_When_Id_Does_Exist_Should_ReturnTaxCalculator()
{
//------------Setup---------------------------------
var taxCalculator = new FlatRateTaxCalculator(new Mock <IIncomeValidator>().Object);
const string identifier = "Flat Rate";
var taxResolver = new PostalCodeTaxResolver(new Mock <IIncomeValidator>().Object);
taxResolver.RegisterTaxCalculator(identifier, taxCalculator);
//------------Execute--------------------------------
var returnedTaxCalculator = taxResolver.GetTaxCalculator(identifier);
//------------Assert--------------------------------
Assert.AreEqual(taxCalculator, returnedTaxCalculator);
}
public void Given_RegisterTaxCalculator_When_Id_DoesNot_Exist_Should_AddTaxCalculator()
{
//------------Setup---------------------------------
var taxCalculator = new FlatRateTaxCalculator(new Mock <IIncomeValidator>().Object);
const string identifier = "Flat Rate";
var taxResolver = new PostalCodeTaxResolver(new Mock <IIncomeValidator>().Object);
//------------Execute--------------------------------
taxResolver.RegisterTaxCalculator(identifier, taxCalculator);
//------------Assert--------------------------------
var numberOfTaxResolvers = taxResolver.Count();
Assert.AreEqual(5, numberOfTaxResolvers);
}
public async Task CalculateFlatRateTaxRate_WhenValidRequest_ShouldCalculateCorrectly(decimal annualIncome, decimal expectedTaxRate)
{
// Arrange
var db = Db();
db.FlatRate.AddRange(SeedValues.GetFlatRatesSeedValues());
db.SaveChanges();
var taxCalculator = new FlatRateTaxCalculator(new TaxQueryService(db));
// Act
var taxAmount = await taxCalculator.CalculateTaxAmountAsync(annualIncome);
// Assert
taxAmount.ShouldBe(expectedTaxRate);
}
public void Given_GetTaxCalculator_When_Id_DoesNot_Exist_Should_ThrowException()
{
//------------Setup---------------------------------
var taxCalculator = new FlatRateTaxCalculator(new Mock <IIncomeValidator>().Object);
const string identifier = "Flat Rate";
var taxResolver = new PostalCodeTaxResolver(new Mock <IIncomeValidator>().Object);
taxResolver.RegisterTaxCalculator(identifier, taxCalculator);
//------------Execute--------------------------------
try
{
taxResolver.GetTaxCalculator("SomeRandomTaxCalculator");
}
catch (System.Exception e)
{
//------------Assert--------------------------------
Assert.AreEqual("No Tax Calculator found", e.Message);
}
}
public void Setup()
{
flatRateTax = new FlatRateTaxCalculator();
}
