public void GivenAMerchantNameReturnsARule()
{
// Arange
var config = FeeCalculatorConfig.Instance;
var service = new CalculatorService(config);
// Act
var ruleA = service.FindRule("MerchantNameString");
var ruleB = service.FindRule("TELIA");
// Assert
Assert.NotNull(ruleA);
Assert.NotNull(ruleB);
}
public void GivenATwoTransactionsInTheSameMonthWithTheSameMerchantNameOnlyFirstTransactionWillContainInvoiceFee()
{
// Arrange
var config = FeeCalculatorConfig.Instance;
var service = new CalculatorService(config);
var transactionA = new Transaction()
{
MerchantName = "MerchantNameString",
Date = DateTime.Parse("2019-01-01"),
Amount = 100,
};
var transactionB = new Transaction()
{
MerchantName = "MerchantNameString",
Date = DateTime.Parse("2019-01-02"),
Amount = 100,
};
var ruleA = service.FindRule(transactionA.MerchantName);
var ruleB = service.FindRule(transactionB.MerchantName);
var feeA = ((transactionA.Amount - (transactionA.Amount / 100 * ruleA.Discount)) / 100 * ruleA.Fee) + ruleA.InvoiceFee;
var feeB = (transactionB.Amount - (transactionB.Amount / 100 * ruleB.Discount)) / 100 * ruleB.Fee;
// Act
service.Calculate(transactionA);
service.Calculate(transactionB);
// Assert
Assert.NotNull(transactionA);
Assert.NotNull(transactionB);
Assert.IsTrue(transactionA.Fee == feeA);
Assert.IsTrue(transactionB.Fee == feeB);
}
public void GivenATransactionCalculatesFees()
{
// Arange
var config = FeeCalculatorConfig.Instance;
var service = new CalculatorService(config);
var transaction = new Transaction()
{
MerchantName = "MerchantNameString",
Date = DateTime.Now,
Amount = 100,
};
var rule = service.FindRule(transaction.MerchantName);
var fee = ((transaction.Amount - (transaction.Amount / 100 * rule.Discount)) / 100 * rule.Fee) + rule.InvoiceFee;
// Act
service.Calculate(transaction);
// Assert
Assert.NotNull(transaction);
Assert.IsTrue(transaction.Fee == fee);
}