Update function call

Author: nickolashkraus

tests/test_invert_binary_tree.py

@@ -14,14 +14,14 @@ class TestSolution(TestCase):
     def test_1(self):
         exp = [4, 7, 2, 9, 6, 3, 1]
         t = create_binary_tree_from_list([4, 2, 7, 1, 3, 6, 9])
-        assert create_bfs_list_from_binary_tree(Solution().invertTree(t)) == exp
+        assert create_bfs_list_from_binary_tree(root=Solution().invertTree(t)) == exp
 
     def test_2(self):
         exp = [2, 3, 1]
         t = create_binary_tree_from_list([2, 1, 3])
-        assert create_bfs_list_from_binary_tree(Solution().invertTree(t)) == exp
+        assert create_bfs_list_from_binary_tree(root=Solution().invertTree(t)) == exp
 
     def test_3(self):
         exp = []
         t = create_binary_tree_from_list([])
-        assert create_bfs_list_from_binary_tree(Solution().invertTree(t)) == exp
+        assert create_bfs_list_from_binary_tree(root=Solution().invertTree(t)) == exp