public void IsNotEmptyAfterNodeEmbarked()
{
var ft = new FifoTraversal();
ft.Embark(CreateNode());
Assert.IsFalse(ft.IsEmpty);
}
public void DisembarkWhenEmptyThrows()
{
var ft = new FifoTraversal();
ft.Embark(CreateNode());
ft.Disembark();
ft.Disembark();
}
public void IsEmptyAfterNodeEmbarkedAndDisembarked()
{
var ft = new FifoTraversal();
ft.Embark(CreateNode());
ft.Disembark();
Assert.IsTrue(ft.IsEmpty);
}
public void CanStillBeUsedAfterEmptied()
{
// ability to reuse is incidental; capturing in unit test just so
// we know if behavior ever changes
var ft = new FifoTraversal();
ft.Embark(CreateNode());
ft.Disembark();
ft.Embark(CreateNode());
Assert.IsFalse(ft.IsEmpty);
}
public void DuplicateNodesAllowed()
{
// duplicate nodes may not be a good idea, but is allowed, at least incidentally
var ft = new FifoTraversal();
var node = CreateNode();
ft.Embark(node);
ft.Embark(node);
ft.Disembark();
ft.Disembark();
Assert.IsTrue(ft.IsEmpty);
}