Question

我正在为读取Excel文件的Python程序编写测试。

为了有一个工作测试标准，我有所谓的＆＃34; Working_sheets＆＃34;。

我的项目结构是

Root/
--->tests
------->golden_sheets/
----------->Desired results
------->src
----------->Python Files
------->Working sheets/
---->main/
---->sheets/

我正在运行的测试是

@patch('os.path.dirname')
    def test_ResolutionSLA_Full(self):
        datetime.date = MockDate
        print(datetime.date.today())
        os.path.dirname.return_value = "../working_sheets"
        resolutionSLA = ResolutionSLA()
        resolutionSLA.run_report()

然而，我收到错误

Traceback (most recent call last):
  File "/usr/lib/python3.5/unittest/case.py", line 59, in testPartExecutor
    yield
  File "/usr/lib/python3.5/unittest/case.py", line 601, in run
    testMethod()
  File "/usr/local/lib/python3.5/dist-packages/mock/mock.py", line 1305, in patched
    return func(*args, **keywargs)
TypeError: test_ResolutionSLA_Full() takes 1 positional argument but 2 were given

方式＆＃34; dirname＆＃34;用的是

self.dir_path = os.path.dirname(os.path.abspath(__file__)) + "/"

这通常会返回

/home/jphamlett/Documents/Work/ServiceNowReportAutomation/

然而，在测试期间我希望它返回

../working_sheets/

我甚至尝试使用与datetime相同的技术

import os


class MockOSPath(os.path):

    @classmethod
    def abspath(cls, file):
        return "../working_sheets/MockOSPath.py"

但这给了我错误

Traceback (most recent call last):
  File "/home/jphamlett/.jetbrain/pycharm/helpers/pycharm/_jb_unittest_runner.py", line 35, in <module>
    main(argv=args, module=None, testRunner=unittestpy.TeamcityTestRunner, buffer=not JB_DISABLE_BUFFERING)
  File "/usr/lib/python3.5/unittest/main.py", line 93, in __init__
    self.parseArgs(argv)
  File "/usr/lib/python3.5/unittest/main.py", line 140, in parseArgs
    self.createTests()
  File "/usr/lib/python3.5/unittest/main.py", line 147, in createTests
    self.module)
  File "/usr/lib/python3.5/unittest/loader.py", line 219, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib/python3.5/unittest/loader.py", line 219, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
  File "/usr/lib/python3.5/unittest/loader.py", line 153, in loadTestsFromName
    module = __import__(module_name)
  File "/home/jphamlett/Documents/Work/ServiceNowReportAutomation/tests/src/ResolutionSLA_Tests.py", line 8, in <module>
    from MockOSPath import MockOSPath
  File "/home/jphamlett/Documents/Work/ServiceNowReportAutomation/tests/src/MockOSPath.py", line 4, in <module>
    class MockOSPath(os.path):
TypeError: module.__init__() takes at most 2 arguments (3 given)

我做错了什么？模拟日期时间工作正常。

Answer 1

由于测试的错误输出表明您正在向测试传递两个参数：

self：测试类
@patch（＆＃39; os.path.dirname＆＃39;）：修补后的对象

要修复它，只需在方法签名中再添加一个参数，并在测试中实际使用它：

@patch('os.path.dirname')
    def test_ResolutionSLA_Full(self, mock_dir):
        datetime.date = MockDate
        print(datetime.date.today())
        mock_dir.return_value = "../working_sheets"
        resolutionSLA = ResolutionSLA()
        resolutionSLA.run_report()

使用路径模拟os.path.dirname

1 个答案: