public void TestInvalidArgumentsReturnsCorrectErrorMessage()
{
var calculator = new global::PriceCalculator.PriceCalculator();
var ex = Assert.Throws <ArgumentException>(() => calculator.GetCompletedBasket(new string[] { "nonexistentitem" }));
Assert.AreEqual("Unable to find item name nonexistentitem, available goods are Beans,Bread,Milk,Apples", ex.Message);
}
public void TestExampleScenarioForBuying2CansOfBeansAnd2LoafsOfBread()
{
var calculator = new global::PriceCalculator.PriceCalculator();
var basket = calculator.GetCompletedBasket(new string[] { "Bread", "Bread", "Beans", "Beans" });
Assert.AreEqual(2.90m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(2.50m, basket.Total, "Incorrect value for total");
Assert.AreEqual(1, basket.Messages.Count, "Incorrect count for messages");
Assert.AreEqual("Bread 50% off: -40p", basket.Messages[0], "Message 1 incorrect");
}
public void TestExampleScenarioForNoOffers()
{
var calculator = new global::PriceCalculator.PriceCalculator();
var basket = calculator.GetCompletedBasket(new string[] { "Milk", "Bread" });
Assert.AreEqual(2.10m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(2.10m, basket.Total, "Incorrect value for total");
Assert.AreEqual(1, basket.Messages.Count);
Assert.AreEqual("(No offers available)", basket.Messages[0], "Message 1 incorrect");
}
public void TestExampleScenarioForAppleDiscount()
{
var calculator = new global::PriceCalculator.PriceCalculator();
var basket = calculator.GetCompletedBasket(new string[] { "Apples", "Milk", "Bread" });
Assert.AreEqual(3.10m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(3.00m, basket.Total, "Incorrect value for total");
Assert.AreEqual(1, basket.Messages.Count, "Incorrect count for messages");
Assert.AreEqual("Apples 10% off: -10p", basket.Messages[0], "Message 1 incorrect");
}
public void TestExampleScenarioUsingDifferentCasingsForArguments(string item1, string item2, string item3)
{
var calculator = new global::PriceCalculator.PriceCalculator();
var basket = calculator.GetCompletedBasket(new string[] { item1, item2, item3 });
Assert.AreEqual(3.10m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(3.00m, basket.Total, "Incorrect value for total");
Assert.AreEqual(1, basket.Messages.Count, "Incorrect count for messages");
Assert.AreEqual("Apples 10% off: -10p", basket.Messages[0], "Message 1 incorrect");
}
public void TestExampleScenarioForAllOffers()
{
var calculator = new global::PriceCalculator.PriceCalculator();
var basket = calculator.GetCompletedBasket(new string[] { "Bread", "Beans", "Beans", "Apples", });
Assert.AreEqual(3.10m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(2.60m, basket.Total, "Incorrect value for total");
Assert.AreEqual(2, basket.Messages.Count, "Incorrect count for messages");
Assert.AreEqual("Bread 50% off: -40p", basket.Messages[0], "Message 1 incorrect");
Assert.AreEqual("Apples 10% off: -10p", basket.Messages[1], "Message 2 incorrect");
}
public void TestExampleScenarioForAllOffersMultipeTimesIncludingPartaillyMoreGroupItemsThanIsAvailableForDiscount()
{
var calculator = new global::PriceCalculator.PriceCalculator();
var basket = calculator.GetCompletedBasket(new string[] { "Bread", "Bread", "Bread", "Beans", "Beans", "Beans", "Beans", "Apples", "Apples", "Beans" });
Assert.AreEqual(7.65m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(6.65m, basket.Total, "Incorrect value for total");
Assert.AreEqual(4, basket.Messages.Count, "Incorrect count for messages");
Assert.AreEqual("Bread 50% off: -40p", basket.Messages[0], "Message 1 incorrect");
Assert.AreEqual("Bread 50% off: -40p", basket.Messages[1], "Message 2 incorrect");
Assert.AreEqual("Apples 10% off: -10p", basket.Messages[2], "Message 3 incorrect");
Assert.AreEqual("Apples 10% off: -10p", basket.Messages[3], "Message 4 incorrect");
}
public void TestScenarioForWhenDiscountAmountIsOver1Pound()
{
var priceConfiguration = new PriceCalculatorConfiguration()
{
AvailableGoodsItems = new List <GoodsItem>()
{
new GoodsItem("TestApples", 99.00m)
},
AvailableOffers = new List <Offer>()
{
new Offer("TestApples", new PercentageDiscount(99))
}
};
var calculator = new global::PriceCalculator.PriceCalculator(priceConfiguration);
var basket = calculator.GetCompletedBasket(new string[] { "TestApples" });
Assert.AreEqual(99m, basket.SubTotal, "Incorrect value for subtotal");
Assert.AreEqual(0.99m, basket.Total, "Incorrect value for total");
Assert.AreEqual(1, basket.Messages.Count, "Incorrect count for messages");
Assert.AreEqual("TestApples 99% off: -�.01", basket.Messages[0]);
}