public void Price_Modifier_From_Single_Multiplier_Deal_With_Additional()
{
var matcher = new StrictItemOfferMatcher(new[] { "A", "A", "A" }, 130);
var items = new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "B", Price = 30
}
};
var modifiers = matcher.Match(items);
modifiers.Modifiers.Should().HaveCount(1);
modifiers.Modifiers[0].Modify(180).Should().Be(160);
}
public void Several_Multiplier_Deals_Correctly_Discovered()
{
var matcher = new StrictItemOfferMatcher(new[] { "A", "A", "A" }, 130);
var deals = matcher.Match(new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
}
});
deals.Modifiers.Should().HaveCount(2);
}
public void Multiple_Deal_Matchers_With_Additionals()
{
var matcher1 = new StrictItemOfferMatcher(new[] { "A", "A", "A" }, 130); // reduction of 20
var matcher2 = new StrictItemOfferMatcher(new[] { "B", "B" }, 45); // reduction of 15
var matcher3 = new StrictItemOfferMatcher(new[] { "C", "C" }, 30); // reduction of 10
var items = new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "C", Price = 20
},
new OfferItem {
Sku = "C", Price = 20
},
new OfferItem {
Sku = "B", Price = 30
},
new OfferItem {
Sku = "B", Price = 30
},
new OfferItem {
Sku = "D", Price = 20
}
};
var itemsPrice = items.Sum(i => i.Price);
var modifier1 = matcher1.Match(items);
var modifier2 = matcher2.Match(items);
var modifier3 = matcher3.Match(items);
modifier1.Modifiers.Count().Should().Be(1);
modifier2.Modifiers.Count().Should().Be(1);
modifier3.Modifiers.Count().Should().Be(1);
var price = modifier1.Modifiers.Aggregate(itemsPrice, (accumulator, item) => item.Modify(accumulator));
price = modifier2.Modifiers.Aggregate(price, (accumulator, item) => item.Modify(accumulator));
price = modifier3.Modifiers.Aggregate(price, (accumulator, item) => item.Modify(accumulator));
(itemsPrice - price).Should().Be(45);
}
public void Single_Multiplier_Deal_Out_of_Order_Discovered()
{
var matcher = new StrictItemOfferMatcher(new[] { "A", "C", "B" }, 130);
var deals = matcher.Match(new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "B", Price = 50
},
new OfferItem {
Sku = "C", Price = 50
}
});
deals.Modifiers.Should().HaveCount(1);
}
public void Price_Modifier_From_Single_Multiplier_Deal()
{
var matcher = new StrictItemOfferMatcher(new[] { "A", "A", "A" }, 130);
var modifiers = matcher.Match(new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
}
});
modifiers.Modifiers.Should().HaveCount(1);
modifiers.Modifiers[0].Modify(150).Should().Be(130);
}
public void Single_Multiplier_Deal_With_Remainders()
{
var matcher = new StrictItemOfferMatcher(new[] { "A", "A", "A" }, 130);
var deals = matcher.Match(new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
}
});
deals.Modifiers.Should().HaveCount(1);
}
public void Two_Deal_Matchers()
{
var matcher1 = new StrictItemOfferMatcher(new[] { "A", "A", "A" }, 130);
var matcher2 = new StrictItemOfferMatcher(new[] { "B", "B" }, 45);
var items = new[] {
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "A", Price = 50
},
new OfferItem {
Sku = "B", Price = 30
},
new OfferItem {
Sku = "B", Price = 30
}
};
var itemsPrice = items.Sum(i => i.Price);
var modifier1 = matcher1.Match(items);
var modifier2 = matcher2.Match(items);
modifier1.Modifiers.Count().Should().Be(1);
modifier2.Modifiers.Count().Should().Be(1);
var price = modifier1.Modifiers.Aggregate(itemsPrice, (accumulator, item) => item.Modify(accumulator));
price = modifier2.Modifiers.Aggregate(price, (accumulator, item) => item.Modify(accumulator));
(itemsPrice - price).Should().Be(35);
}
