public static void GifAidAmount_FractionedToMoreThanTwoDigits_Expect_RoundedValue(decimal donationAmount, decimal expected)
{
var taxRate = new Mock <ITaxRateStore>();
taxRate.Setup(m => m.Get()).Returns(20m);
IGiftAidCalculatorService calc = new GiftAidCalculatorService(taxRate.Object);
decimal giftAidAmount = calc.GiftAidAmount(donationAmount);
Assert.AreEqual(expected, giftAidAmount);
}
public static void GiftAidAmount_ChangingTaxRate_Expect_AmountChangeAccordingly(decimal taxRate, decimal donationAmount)
{
var taStore = new Mock <ITaxRateStore>();
taStore.Setup(x => x.Get()).Returns(taxRate);
IGiftAidCalculatorService calc = new GiftAidCalculatorService(taStore.Object);
decimal giftAidAmount = calc.GiftAidAmount(donationAmount);
decimal expected = expectedGiftAidAmount(donationAmount, taxRate);
Assert.AreEqual(expected, giftAidAmount);
}
public static void GiftAidAmount_VerifyInjectedTaxRateStoreIsCalled_Expect_AtLeastOnce([Values(10, 100)] decimal donationAmount)
{
decimal arbitraryTaxRate = 20m;
var spyTaStore = new Mock <ITaxRateStore>();
spyTaStore.Setup(x => x.Get()).Returns(arbitraryTaxRate);
IGiftAidCalculatorService calc = new GiftAidCalculatorService(spyTaStore.Object);
decimal giftAidAmount = calc.GiftAidAmount(donationAmount);
spyTaStore.Verify(m => m.Get(), Times.AtLeastOnce());
}
public static void GifAidAmount_TaxRate100Donate100_Expect_10000AsGiftAid()
{
decimal gaTaxRate = 100m;
decimal donationAmount = 100m;
decimal expected = 10000m;
var taxRate = new Mock <ITaxRateStore>();
taxRate.Setup(m => m.Get()).Returns(gaTaxRate);
IGiftAidCalculatorService calc = new GiftAidCalculatorService(taxRate.Object);
decimal giftAidAmount = calc.GiftAidAmount(donationAmount);
Assert.AreEqual(expected, giftAidAmount);
}
public static void GiftAidAmount_TaxRateIsDefault_Expect_CharityMake20PercentExtra([Values(10, 100)] decimal donationAmount)
{
decimal inputTaxRate = 20m;
var taStore = new Mock <ITaxRateStore>();
taStore.Setup(x => x.Get()).Returns(inputTaxRate);
IGiftAidCalculatorService calc = new GiftAidCalculatorService(taStore.Object);
decimal giftAidAmount = calc.GiftAidAmount(donationAmount);
decimal expected = expectedGiftAidAmount(donationAmount, inputTaxRate);
Assert.AreEqual(expected, giftAidAmount);
}
public static void GiftAidAmount_DonatingForNoSupplementEvent_Except_onlyGiftAidAmount()
{
decimal donationAmount = 100m;
var otherEvent = new GiftAidCalculator.Service.NoSupplementEvent();
var taxRate = new Mock <ITaxRateStore>();
taxRate.Setup(m => m.Get()).Returns(20m);
var calculator = new GiftAidCalculatorService(taxRate.Object);
calculator.SetEventType(otherEvent);
var amount = calculator.GiftAidAmount(donationAmount);
var except = expectedGiftAidAmount(donationAmount, TaxRateStore.CurrentRate.Value, 0);
Assert.AreEqual(except, amount);
}
public static void GiftAidAmount_DonatingForSwimmingEvent_Except_3PercentSupplimentAdded()
{
decimal donationAmount = 100m;
decimal swimmingSupplementRate = 3m;
decimal taxRate = 0m;
var trStore = new Mock <ITaxRateStore>();
trStore.Setup(m => m.Get()).Returns(taxRate);
var swimmingEvent = new GiftAidCalculator.Service.SwimmingEvent(swimmingSupplementRate);
var calculator = new GiftAidCalculatorService(trStore.Object);
calculator.SetEventType(swimmingEvent);
var amount = calculator.GiftAidAmount(donationAmount);
var except = expectedGiftAidAmount(donationAmount, suppliment: swimmingSupplementRate);
Assert.AreEqual(except, amount);
}
public static void GiftAidAmount_DonatingForRunningEvent_Except_5PercentSupplimentAdded()
{
decimal inputDonationAmount = 100m;
decimal inputSupplimnet = 5m;
var trStore = new Mock <ITaxRateStore>();
trStore.Setup(m => m.Get()).Returns(0);
var runningEvent = new GiftAidCalculator.Service.RunningEvent(inputSupplimnet);
var calculator = new GiftAidCalculatorService(trStore.Object);
calculator.SetEventType(runningEvent);
var amount = calculator.GiftAidAmount(inputDonationAmount);
var except = expectedGiftAidAmount(inputDonationAmount, inputSupplimnet);
Assert.AreEqual(except, amount);
}