public void It_counts_transitive_containers_correctly()
{
var cargo = new Bag("blue", "light");
var container1 = new Bag("red", "dark");
var container2 = new Bag("green", "forest");
var container3 = new Bag("yellow", "sunny");
cargo.SetContainedBy(container1);
cargo.SetContainedBy(container2);
container1.SetContainedBy(container3);
ISet <Bag> expectedContainers = new HashSet <Bag>(new[] { container1, container2, container3 });
var transitiveContainers = cargo.GetTransitiveContainers(cargo);
transitiveContainers.ExceptWith(expectedContainers);
Assert.AreEqual(0, transitiveContainers.Count);
}
public void Bag_reports_whether_another_bag_can_contain_it()
{
Bag container = new Bag("blue", "light");
Bag cargo = new Bag("red", "dark");
cargo.SetContainedBy(container);
Assert.IsTrue(cargo.CanBeIn(new Bag("blue", "light")));
Assert.IsFalse(cargo.CanBeIn(new Bag("red", "light")));
}
