public void CompareEulerTours()
{
var randomTree = InputGenerator.GenerateRandomRootedTree(1000, 1, 3);
CollectionAssert.AreEqual(
randomTree.GetEulerTourUsingStack().ToArray(),
randomTree.GetEulerTourUsingRecursion());
}
private static RootedTree[] GetRandomTrees(int count, int vertexCount, int minChildCount, int maxChildCount)
{
var randomTrees = new RootedTree[count];
for (int i = 0; i < count; ++i)
{
randomTrees[i] = InputGenerator.GenerateRandomRootedTree(vertexCount, minChildCount, maxChildCount);
}
return(randomTrees);
}
public void GenerateRandomRootedTrees()
{
var lineTree = InputGenerator.GenerateRandomRootedTree(5, 1, 1);
Assert.AreEqual(0, lineTree.Root.ID);
Assert.AreEqual(5, lineTree.VertexCount);
Assert.AreEqual(1, lineTree.Vertices[0].Children.Count);
Assert.AreEqual(1, lineTree.Vertices[1].Children.Count);
Assert.AreEqual(1, lineTree.Vertices[2].Children.Count);
Assert.AreEqual(1, lineTree.Vertices[3].Children.Count);
Assert.AreEqual(0, lineTree.Vertices[4].Children.Count);
Assert.AreEqual(3, lineTree.Vertices[2].Children[0].ID);
var binaryTree = InputGenerator.GenerateRandomRootedTree(6, 2, 2);
Assert.AreEqual(0, binaryTree.Root.ID);
Assert.AreEqual(6, binaryTree.VertexCount);
Assert.AreEqual(2, binaryTree.Vertices[0].Children.Count);
Assert.AreEqual(2, binaryTree.Vertices[1].Children.Count);
Assert.AreEqual(1, binaryTree.Vertices[2].Children.Count);
Assert.AreEqual(0, binaryTree.Vertices[3].Children.Count);
Assert.AreEqual(0, binaryTree.Vertices[4].Children.Count);
Assert.AreEqual(0, binaryTree.Vertices[5].Children.Count);
Assert.AreEqual(5, binaryTree.Vertices[2].Children[0].ID);
var starTree = InputGenerator.GenerateRandomRootedTree(6, 5, 10);
Assert.AreEqual(0, starTree.Root.ID);
Assert.AreEqual(6, starTree.VertexCount);
Assert.AreEqual(5, starTree.Vertices[0].Children.Count);
Assert.AreEqual(0, starTree.Vertices[1].Children.Count);
Assert.AreEqual(0, starTree.Vertices[2].Children.Count);
Assert.AreEqual(0, starTree.Vertices[3].Children.Count);
Assert.AreEqual(0, starTree.Vertices[4].Children.Count);
Assert.AreEqual(0, starTree.Vertices[5].Children.Count);
var randomTree = InputGenerator.GenerateRandomRootedTree(100, 1, 3);
randomTree.InitializeDepthsAndSubtreeSizes();
Assert.IsTrue(randomTree.Vertices
.All(v => v.Children.All(c => c.Depth == v.Depth + 1)));
Assert.IsTrue(randomTree.Vertices
.All(v => randomTree.Vertices.Where(v2 => v2.ID > v.ID).All(v2 => v2.Depth >= v.Depth)));
}