public void countPopulatedChildren()
{
Problem3 p3 = new Problem3();
p3.addNode(5, p3._head);
p3.addNode(1, p3._head);
p3.addNode(1, p3._head);
int expected = 2;
int actual = p3.countChildren(p3._head);
Assert.AreEqual(expected, actual, "Improper count of children");
}