哪个模块要修补

Question

我有以下目录

/root
  /app
      /api
          my_api.py
      /service
          my_service.py
  /tests
     test_api.py

my_api.py

import app
def run_service():
     app.service.my_service.service_function()

test_api.py

@patch('app.service.my_service.service_function')
test_run_service(self,mock_service):
     mock_service.return_value = 'Mock'
     response = self.client.get(url_for('api.run_service')
     self.assertTrue(response == expected_responce)

以上工作.我无法弄清楚,我需要修补哪个模块,以防我想service_function在my_apy.py中导入,如下所示:

from app.service.my_service import service_function

如果我像上面那样进行导入,模拟停止工作.

Answer 1

您需要修补app.api.my_api.service_function,因为这是已绑定到导入对象的全局名称:

@patch('app.api.my_api.service_function')
test_run_service(self, mock_service):
     mock_service.return_value = 'Mock'
     response = self.client.get(url_for('api.run_service')
     self.assertTrue(response == expected_responce)

请参阅补丁部分:

基本原则是修改查找对象的位置,该位置不一定与定义对象的位置相同.