sys.path.insert(0, '..')

    def setUp(self):

        """Build tree model

        """

        self.model = TreeModel()

        self.model.add('/',  ['a', 'b'])

        self.model.add('/a', [TreeNode('c'), TreeNode('d')])

        self.model.add((0,1), ['e', TreeNode('f')])

        self.model.add([0,1,0], 'g')

        self.model.add('/a/d/f', TreeNode('h'))

    def test_treeiter(self):

        """Iterate through the tree, test result."""

        for l, i, c, n in self.model:

    def test_treemodel_find(self):

        # good path

        node = self.model.find('/a/d/f/h')

        self.assertEqual(node.name, 'h')

        self.assertEqual(node.path, '/a/d/f/h')

        # bad path

        self.assertRaises(ValueError, self.model.find, '/a/b/c')

        self.assertRaises(IndexError, self.model.find, [0,1,3])