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 Degree_1Degree_1Degree()
{
var parent = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var child = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
_heap.AddChild(parent, child);
Assert.Multiple(() =>
{
Assert.AreEqual(1, parent.Degree);
Assert.AreEqual(0, child.Degree);
});
}
public void Degree_1Degree_plus_0Degree_2Degree()
{
var parent = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
var child = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
var grandChild = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
_heap.AddChild(parent, child);
_heap.AddChild(child, grandChild);
Assert.Multiple(() =>
{
Assert.AreEqual(2, parent.Degree);
Assert.AreEqual(1, child.Degree);
Assert.AreEqual(0, grandChild.Degree);
});
}
public void Degree_1Degree_plus_1Degree_2Degree()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var c1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var c2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
_heap.AddChild(p1, c1);
_heap.AddChild(p2, c2);
_heap.AddChild(p1, p2);
Assert.Multiple(() =>
{
Assert.AreEqual(2, p1.Degree);
Assert.AreEqual(1, p2.Degree);
Assert.AreEqual(0, c1.Degree);
Assert.AreEqual(0, c2.Degree);
});
}
public void Degree_3Degree_plus_1Degree_3Degree()
{
var a1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var a2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var a3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var a4 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var b1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
var b2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
_heap.AddChild(a1, a2);
_heap.AddChild(a2, a3);
_heap.AddChild(a3, a4);
_heap.AddChild(b1, b2);
Assert.AreEqual(3, a1.Degree);
_heap.AddChild(a1, b1);
Assert.AreEqual(3, a1.Degree);
}
public void Degree_RemoveLargeSubTree3_DegreeRecalculated()
{
var a1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(6);
var a2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
_heap.AddChild(a1, a2);
// b1 - b2
var b1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(8);
var b2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(9);
_heap.AddChild(b1, b2);
// b1 - b3 - b4 - b5 - b6
var b3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(10);
var b4 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(11);
var b5 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(12);
var b6 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(13);
_heap.AddChild(b1, b3);
_heap.AddChild(b3, b4);
_heap.AddChild(b4, b5);
_heap.AddChild(b5, b6);
var c1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(14);
var c2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(15);
_heap.AddChild(c1, c2);
_heap.AddChild(a1, b1);
_heap.AddChild(a1, c1);
Assert.AreEqual(5, a1.Degree);
_heap.Cut(b2);
Assert.AreEqual(5, a1.Degree);
}
public void Degree_NewNode_0Degree()
{
var node = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(7);
Assert.AreEqual(0, node.Degree);
}