public void TestCalculateMultipleSavings()
{
const string rulesFile = "price-rules-many.txt";
const string cartFile = "shoppingcart-ApplesBananasOranges.txt";
const bool compound = true;
var cp = new CartProcessor(rulesFile, cartFile, compound);
var rules = ruleMapper.ReadRules(rulesFile);
Assert.AreEqual(3, rules.Keys.Count);
var cart = cartMapper.ReadShoppingList(cartFile);
Assert.AreEqual(3, cart.Keys.Count);
var savings = cp.CalculateAmountSaved(cart["apple"], rules["apple"], compound);
Assert.AreEqual(10, savings);
savings += cp.CalculateAmountSaved(cart["banana"], rules["banana"], compound);
Assert.AreEqual(10.6m, savings);
savings += cp.CalculateAmountSaved(cart["orange"], rules["orange"], compound);
Assert.AreEqual(10.85m, savings);
}
public void TestSavingsNonCompoundRules()
{
const string rulesFile = "rules-compound.txt";
const string cartFile = "shoppingcart-ApplesBananasOranges.txt";
const bool compound = false;
var cp = new CartProcessor(rulesFile, cartFile, false);
var rules = ruleMapper.ReadRules(rulesFile);
Assert.AreEqual(3, rules.Keys.Count);
var cart = cartMapper.ReadShoppingList(cartFile);
Assert.AreEqual(3, cart.Keys.Count);
var savings = cp.CalculateAmountSaved(cart["apple"], rules["apple"], compound);
Assert.AreEqual(10m, savings);
savings += cp.CalculateAmountSaved(cart["banana"], rules["banana"], compound);
Assert.AreEqual(13m, savings);
savings += cp.CalculateAmountSaved(cart["orange"], rules["orange"], compound);
Assert.AreEqual(13.25m, savings);
}
public void TestCalculateSavings()
{
const string rulesFile = "price-rules-apple.txt";
const string cartFile = "shoppingcart-5apples.txt";
const decimal expected = 0m;
const bool compound = true;
var cp = new CartProcessor(rulesFile, cartFile, compound);
var cart = cartMapper.ReadShoppingList(cartFile);
var rules = ruleMapper.ReadRules(rulesFile);
var savings = cp.CalculateAmountSaved(cart["apple"], rules["apple"], compound);
Assert.AreEqual(expected, savings);
}