public void RunTest3()
{
DecisionTree tree;
int[][] inputs;
int[] outputs;
CreateXORExample(out tree, out inputs, out outputs);
Assert.AreEqual(3, tree.Root.Branches.AttributeIndex); // a4
Assert.AreEqual(2, tree.Root.Branches.Count);
Assert.IsNull(tree.Root.Output);
Assert.IsNull(tree.Root.Value);
Assert.AreEqual(0, tree.Root.Branches[0].Value); // a4 = 0
Assert.AreEqual(0, tree.Root.Branches[0].Branches.AttributeIndex); // Decide over a1
Assert.AreEqual(2, tree.Root.Branches[0].Branches.Count);
Assert.IsFalse(tree.Root.Branches[0].Branches[0].IsLeaf);
Assert.IsTrue(tree.Root.Branches[0].Branches[1].IsLeaf);
Assert.AreEqual(0, tree.Root.Branches[0].Branches[1].Output);
Assert.AreEqual(1, tree.Root.Branches[1].Value); // a4 = 1
Assert.AreEqual(0, tree.Root.Branches[1].Branches.AttributeIndex); // Decide over a1
Assert.AreEqual(2, tree.Root.Branches[1].Branches.Count);
Assert.IsFalse(tree.Root.Branches[1].Branches[0].IsLeaf);
Assert.IsTrue(tree.Root.Branches[1].Branches[1].IsLeaf);
Assert.AreEqual(1, tree.Root.Branches[1].Branches[1].Output);
Assert.AreEqual(0, tree.Root.Branches[0].Branches[0].Value); // a1 = 0
Assert.AreEqual(1, tree.Root.Branches[0].Branches[0].Branches.AttributeIndex); // Decide over a2
Assert.AreEqual(2, tree.Root.Branches[0].Branches[0].Branches.Count);
Assert.IsTrue(tree.Root.Branches[0].Branches[0].Branches[0].IsLeaf);
Assert.IsTrue(tree.Root.Branches[0].Branches[0].Branches[1].IsLeaf);
}