public void Test_Remove_T_CASE3_3()
{
// CASE 3: If current's right child has a left child, replace current with current's
// right child's left-most descendent
var tree = new BinaryTree<int> { 90, 50, 150, 20, 75, 125, 175, 5, 25, 66, 80, 140, 68, 123 };
tree.Remove(90);
var expectedTree = new BinaryTree<int> {123, 50, 150, 20, 75, 125, 175, 5, 25, 66, 80, 140, 68};
Assert.AreEqual(true, tree == expectedTree);
}