“功能”对象没有属性“ assert_drawn_once_with”

你不能执行

.assert_called_once_with

mock.create_autospec

**import unittest.mock as mock**def rm(filename):    helper(filename, 5)def helper(filename):    pass**helper = mock.create_autospec(helper)**def test_unix_fs(mocker):    mocker.patch('module.helper')    rm('file')    helper.assert_called_once_with('file', 5)

或更优雅：

import unittest.mock as mockdef rm(filename):    helper(filename, 5)**@mock.create_autospec**def helper(filename):    passdef test_unix_fs(mocker):    mocker.patch('module.helper')    rm('file')    helper.assert_called_once_with('file', 5)

请注意，断言将失败，因为您只能通过调用断言

'file'

import unittest.mock as mockdef rm(filename):    helper(filename, 5)@mock.create_autospecdef helper(filename):    passdef test_unix_fs(mocker):    mocker.patch('module.helper')    rm('file')    helper. **assert_called_once_with('file')**

编辑 ：如果函数在某个模块中定义，则可以将其包装在本地的装饰器中。例如：

import unittest.mock as mock**from some_module import some_function****some_function = mock.create_autospec(some_function)**def test_unix_fs(mocker):    some_function('file')    some_function.assert_called_once_with('file')