Python中的UNITTEST不起作用

Posted 2023-04-15

【中文标题】Python中的UNITTEST不起作用

【英文标题】：UNITTEST in Python is not working

【发布时间】：2017-05-06 08:32:55

【问题描述】：

我以python网站为例，尝试在community.databricks.com平台上运行。我收到属性错误。请指教

import unittest

class TestStringMethods(unittest.TestCase):

    def test_upper(self):
        self.assertEqual('foo'.upper(), 'FOO')

    def test_isupper(self):
        self.assertTrue('FOO'.isupper())
        self.assertFalse('Foo'.isupper())

    def test_split(self):
        s = 'hello world'
        self.assertEqual(s.split(), ['hello', 'world'])
        # check that s.split fails when the separator is not a string
        with self.assertRaises(TypeError):
            s.split(2)

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


AttributeError: 'module' object has no attribute '41750'
--------------------------------------------------------------------------- AttributeError                            Traceback (most recent call last) <ipython-input-88-3ccf7d7a57bd> in <module>()
     18 
     19 if __name__ == '__main__':
---> 20     unittest.main()

/usr/lib/python2.7/unittest/main.pyc in __init__(self, module, defaultTest, argv, testRunner, testLoader, exit, verbosity, failfast, catchbreak, buffer)
     92         self.testLoader = testLoader
     93         self.progName = os.path.basename(argv[0])
---> 94         self.parseArgs(argv)
     95         self.runTests()
     96 

/usr/lib/python2.7/unittest/main.pyc in parseArgs(self, argv)
    147             else:
    148                 self.testNames = (self.defaultTest,)
--> 149             self.createTests()
    150         except getopt.error, msg:
    151             self.usageExit(msg)

/usr/lib/python2.7/unittest/main.pyc in createTests(self)
    156         else:
    157             self.test = self.testLoader.loadTestsFromNames(self.testNames,
--> 158                                                            self.module)
    159 
    160     def _do_discovery(self, argv, Loader=None):

/usr/lib/python2.7/unittest/loader.pyc in loadTestsFromNames(self, names, module)
    128         of string specifiers. See 'loadTestsFromName()'.
    129         """
--> 130         suites = [self.loadTestsFromName(name, module) for name in names]
    131         return self.suiteClass(suites)
    132 

/usr/lib/python2.7/unittest/loader.pyc in loadTestsFromName(self, name, module)
     98         obj = module
     99         for part in parts:
--> 100             parent, obj = obj, getattr(obj, part)
    101 
    102         if isinstance(obj, types.ModuleType):

AttributeError: 'module' object has no attribute '41750'

【问题讨论】：

从哪些文件夹和文件以及如何运行测试？

【参考方案1】：

试试这个：

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

【讨论】：

调用该类中所有函数的任何其他方式。而不是调用 unittest.main() ??

你可以用这个代替那个，suite = unittest.TestLoader().loadTestsFromTestCase(TestStringMethods) unittest.TextTestRunner(verbosity=2).run(suite)

如果不起作用则删除 ' if name == 'main': ' line too

它运行良好，但如果我给 self.assertEqual('foo'.upper(), 'FOOD') 就不会出现断言错误

你可以像这样使用 TRY CATCH 来显示错误，尝试：self.assertEqual('foo'.upper(), 'FOOD') except AssertionError as e: print(e)