def METHOD_NAME(self):
    """
    Tests the case when embedding fails for word that is tried to be inserted
    - don't insert it
    """
    tree, skipped = self.handler.generate(['1', '2', '3', '4'])
    self.assertEqual(skipped, 0)
    new_tree, skipped = self.handler.insert(tree, ['5'])
    self.assertDictEqual(tree, new_tree)
    self.assertEqual(skipped, 1)