如何在 python 中的 main() function 中模擬 object？

Question

我正在嘗試模擬 data1 和 data2 並嘗試提供返回值。 我有以下代碼：

import pandas 

def main():
    data1= pandas.read_excel('path1')
    data2= pandas.read_excel('path2')

if __name__ == '__main__':
    main()

import test1
from unittest.mock import patch
import pandas

class Testdata(unittest.TestCase):

    @patch('test1.main.data1')
    @patch('test1.main.data2')
    def test_main(self, mock_data1, mock_data2):    
        mock_data1.return_value = pandas.DataFrame([some dataframe])
        mock_data2.return_value = pandas.DataFrame([some dataframe])
        test.main()
        data1.assert_called_once()
        data2.assert_called_once()

if __name__ == '__main__':
    unittest.main()

我收到以下錯誤：

Error
Traceback (most recent call last):
  File "C:\apps\python\3.6.2\lib\unittest\case.py", line 59, in testPartExecutor
    yield
  File "C:\apps\python\3.6.2\lib\unittest\case.py", line 605, in run
    testMethod()
  File "C:\apps\python\3.6.2\lib\unittest\mock.py", line 1171, in patched
    arg = patching.__enter__()
  File "C:\apps\python\3.6.2\lib\unittest\mock.py", line 1227, in __enter__
    self.target = self.getter()
  File "C:\apps\python\3.6.2\lib\unittest\mock.py", line 1397, in <lambda>
    getter = lambda: _importer(target)
  File "C:\apps\python\3.6.2\lib\unittest\mock.py", line 1080, in _importer
    thing = __import__(import_path)
ModuleNotFoundError: No module named 'main'

如何解決此問題以及如何模擬 data1 和 data2 並為其提供返回值？

Answer 1

在查看完整代碼之前不能說太多，但我在開始時添加import unitest就可以完成這項工作。