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 It_reports_no_containers_correctly()
{
var cargo = new Bag("blue", "light");
Assert.AreEqual(new HashSet <Bag>(), cargo.GetTransitiveContainers(cargo));
}
