public void ItemId_and_Discount_properties_should_comply_with_construction_parameters()
{
var subject = new FlatXPercentOff("item-1", 0.30m);
Assert.That(subject.ItemId, Is.EqualTo("item-1"));
Assert.That(subject.Discount, Is.EqualTo(0.3m));
}
public void Should_return_discounted_price_for_matching_orderitem()
{
var subject = new FlatXPercentOff("item-1", 0.10m);
var orderItem = new OrderItem {
Identifier = "item-1", ItemCost = 50m, Quantity = 10
};
Assert.That(subject.CalculateItemPrice(orderItem), Is.EqualTo(500m * 0.9m));
}
public void Should_throw_ArgumentException_for_non_matching_orderitem()
{
var subject = new FlatXPercentOff("item-1", 0.15m);
var orderItem = new OrderItem {
Identifier = "item-2", ItemCost = 50m, Quantity = 10
};
Assert.Throws <ArgumentException>(() => subject.CalculateItemPrice(orderItem));
}
public void Should_return_true_for_matching_item()
{
var subject = new FlatXPercentOff("item-1", 0.15m);
var orderItem = new OrderItem {
Identifier = "item-1", ItemCost = 50m, Quantity = 10
};
Assert.IsTrue(subject.MatchesItem(orderItem));
}
public void Should_not_match_when_order_is_null()
{
var subject = new FlatXPercentOff("item-1", 0.3m);
Assert.IsFalse(subject.MatchesItem(null));
}
public void Name_should_contain_the_discount_percentage_and_off()
{
var subject = new FlatXPercentOff("item-1", 0.30m);
Assert.IsTrue(subject.Name.Contains(string.Format("{0:p2} off", 0.3m)));
}