public void Pop_an_empty_heap()
{
AMHeap heap = new AMHeap();
object top = heap.Pop();
Assert.IsNull(top);
}
public void SetVoid()
{
AbstractMachineState state = SetupMachine();
AMHeap heap = (AMHeap)state.DataArea;
object[] args = { "3" };
SetVoidInstruction i = new SetVoidInstruction();
i.Process(args);
i.Execute(state);
Assert.AreEqual("set_void", i.Name());
Assert.AreEqual(1, i.NumberOfArguments());
Assert.IsTrue(((AbstractTerm)heap.Pop()).IsReference);
Assert.IsTrue(((AbstractTerm)heap.Pop()).IsReference);
Assert.IsTrue(((AbstractTerm)heap.Pop()).IsReference);
}
public void Pop_one_item()
{
AMHeap heap = new AMHeap();
ConstantTerm con = new ConstantTerm("ali");
heap.Push(con);
heap.Pop();
Assert.IsNull(heap.Top());
}
public void Pop_two_items()
{
AMHeap heap = new AMHeap();
ConstantTerm con = new ConstantTerm("ali");
ConstantTerm first = new ConstantTerm("foo");
heap.Push(first);
heap.Push(con);
heap.Pop();
Assert.AreSame(first, heap.Top());
}