public void Degree_RemoveLargeSubTree_DegreeRecalculated()
{
var a1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(6);
var a2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
_heap.AddChild(a1, a2);
var b1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(8);
var b2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(9);
var b3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(10);
var b4 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(11);
_heap.AddChild(b1, b2);
_heap.AddChild(b2, b3);
_heap.AddChild(b3, b4);
var c1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(12);
var c2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(13);
_heap.AddChild(c1, c2);
_heap.AddChild(a1, b1);
_heap.AddChild(a1, c1);
Assert.AreEqual(4, a1.Degree);
_heap.Cut(b1);
Assert.AreEqual(2, a1.Degree);
}
public void Cut_1Node_CorrectNextPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
_heap.Cut(p1);
Assert.Multiple(() =>
{
Assert.AreEqual(p1, p1.Next);
Assert.AreEqual(p1, p1.Prev);
});
}