public void TestDiscountIsAppliedIfNumberOfItemsIsThreeOrGreaterThanThree( )
{
List <CheckoutKata.Business.ISpecialPricingRule> rules = TestAssistant.CreateRulesFromTexFile( );
var wh = new GenericCalculator(rules[0]);
// Arrange
var disCountProduct = TestAssistant.StockKeepingUnits(3, "A", 50);
var expected = 130;
var actual = wh.ApplyDiscount(disCountProduct);
Assert.AreEqual(expected, actual);
disCountProduct = TestAssistant.StockKeepingUnits(5, "A", 50);
expected = 230;
actual = wh.ApplyDiscount(disCountProduct);
Assert.AreEqual(expected, actual);
disCountProduct = TestAssistant.StockKeepingUnits(10, "A", 50);
expected = 440;
actual = wh.ApplyDiscount(disCountProduct);
Assert.AreEqual(expected, actual);
}
public void TestApplyDiscountReturnsZeroIfNoProductIsProcided( )
{
var rules = TestAssistant.CreateRulesFromTexFile( );
// Arrange
List <StockKeepingUnit> disCountProduct = null;
var wh = new GenericCalculator(rules[0]);
var expected = 0;
var actual = wh.ApplyDiscount(disCountProduct);
Assert.AreEqual(expected, actual);
// Now initialised with no item on the list
disCountProduct = new List <StockKeepingUnit>();
actual = wh.ApplyDiscount(disCountProduct);
Assert.AreEqual(expected, actual);
}
public void TestNoDiscountAppliedIfNumberOfItemsIsLessThanThree( )
{
List <CheckoutKata.Business.ISpecialPricingRule> rules = TestAssistant.CreateRulesFromTexFile( );
var disCountProduct = TestAssistant.StockKeepingUnits(2, "A", 50);
var wh = new GenericCalculator(rules[0]);
var expected = 100;
var actual = wh.ApplyDiscount(disCountProduct);
Assert.AreEqual(expected, actual);
}
