public void AddChild_3Nodes_CorrectNextPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(0);
var c1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var c2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
var c3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
_heap.AddChild(p1, c1);
_heap.AddChild(p1, c2);
_heap.AddChild(p1, c3);
// Parent
// c1 > c2 > c3
Assert.Multiple(() =>
{
Assert.AreEqual(c3, c1.Prev);
Assert.AreEqual(c2, c1.Next);
Assert.AreEqual(c1, c2.Prev);
Assert.AreEqual(c3, c2.Next);
Assert.AreEqual(c2, c3.Prev);
Assert.AreEqual(c1, c3.Next);
});
}
public void AddChild_1Node_CorrectParent()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
_heap.AddChild(p1, p2);
Assert.AreEqual(p1, p2.Parent);
}
public void AddChild_FirstChild_CorrectNextPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
_heap.AddChild(p1, p2);
Assert.AreEqual(p2, p1.Child);
}
public void Consolidate_2Node_CorrectMinReturned()
{
var node1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(5);
var node2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(6);
_heap.Join(node1, node2);
var newMin = _heap.Consolidate(node1, 2);
Assert.AreEqual(5, newMin.Value);
}
public void Cut_2NodesWithIndirectParent_CorrectParent()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var c1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var c2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
_heap.AddChild(p1, c1);
_heap.AddChild(p1, c2);
_heap.Cut(c2);
Assert.AreEqual(p1, c1.Parent);
}
public void Consolidate_1Node_CorrectSiblings()
{
var node = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(5);
_heap.Consolidate(node, 1);
Assert.Multiple(() =>
{
Assert.AreEqual(node, node.Prev);
Assert.AreEqual(node, node.Next);
});
}
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);
});
}
public void AddChild_1Node_CorrectNextPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
_heap.AddChild(p1, p2);
Assert.Multiple(() =>
{
Assert.AreEqual(p2, p2.Prev);
Assert.AreEqual(p2, p2.Next);
});
}
public void Consolidate_2Node_CorrectParents()
{
var node1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(5);
var node2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(6);
_heap.Join(node1, node2);
_heap.Consolidate(node1, 2);
Assert.Multiple(() =>
{
Assert.IsNull(node1.Parent);
Assert.AreEqual(node1, node2.Parent);
});
}
public void Consolidate_2Node_CorrectDegree()
{
var node1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(5);
var node2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(6);
_heap.Join(node1, node2);
_heap.Consolidate(node1, 2);
Assert.Multiple(() =>
{
Assert.AreEqual(1, node1.Degree);
Assert.AreEqual(0, node2.Degree);
});
}
public void AddChild_2Nodes_CorrectParents()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
var p3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
_heap.AddChild(p1, p2);
_heap.AddChild(p1, p3);
Assert.Multiple(() =>
{
Assert.AreEqual(p1, p2.Parent);
Assert.AreEqual(p1, p3.Parent);
});
}
public void Consolidate_3Node_CorrectMin()
{
var node1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
var node2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(4);
_heap.AddChild(node1, node2);
var node3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(5);
_heap.Join(node3, node1);
var newMin = _heap.Consolidate(node3, 2);
Assert.AreEqual(3, newMin.Value);
}
public void JoinNodes_2Nodes_CorrectNextAndPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
_heap.Join(p1, p2);
Assert.Multiple(() =>
{
Assert.AreEqual(p2, p1.Prev);
Assert.AreEqual(p2, p1.Next);
Assert.AreEqual(p1, p2.Prev);
Assert.AreEqual(p1, p2.Next);
});
}
private Node <int> CreateSiblings(int[] tree)
{
Node <int> node = null;
foreach (var level in tree)
{
var newNode = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(level);
if (node == null)
{
node = newNode;
}
else
{
_heap.Join(node, newNode);
}
}
return(node);
}
public void Cut_2NodesWithDirectParent_CorrectNextPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var c1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var c2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
_heap.AddChild(p1, c1);
_heap.AddChild(p1, c2);
_heap.Cut(c1);
Assert.Multiple(() =>
{
Assert.AreEqual(c1, c1.Next);
Assert.AreEqual(c1, c1.Prev);
Assert.AreEqual(c2, c2.Next);
Assert.AreEqual(c2, c2.Prev);
});
}
public void Iterate_Siblings_Success()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
var p3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
_heap.Join(p2, p3);
_heap.Join(p1, p2);
var actual = NodeDebugTools <int> .IterateSiblings(p1).ToList();
Assert.Multiple(() =>
{
Assert.AreEqual(3, actual.Count());
Assert.AreEqual(1, actual[0].Value);
Assert.AreEqual(2, actual[1].Value);
Assert.AreEqual(3, actual[2].Value);
});
}
public void JoinNodes_3NodesAnd3Nodes_CorrectNextAndPrev()
{
var p1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var p2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
var p3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
_heap.Join(p2, p3);
_heap.Join(p1, p2);
var n1 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(1);
var n2 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(2);
var n3 = FibonacciHeapTestHelpers.CreateNodeConnectedToSelf(3);
_heap.Join(n2, n3);
_heap.Join(n1, n2);
_heap.Join(p1, n1);
Assert.Multiple(() =>
{
Assert.AreEqual(n3, p1.Prev);
Assert.AreEqual(p2, p1.Next);
Assert.AreEqual(p1, p2.Prev);
Assert.AreEqual(p3, p2.Next);
Assert.AreEqual(p2, p3.Prev);
Assert.AreEqual(n1, p3.Next);
Assert.AreEqual(p3, n1.Prev);
Assert.AreEqual(n2, n1.Next);
Assert.AreEqual(n1, n2.Prev);
Assert.AreEqual(n3, n2.Next);
Assert.AreEqual(n2, n3.Prev);
Assert.AreEqual(p1, n3.Next);
});
}