导致sys.exit（）的单元测试

Question

无论我做什么，sys.exit（）都被unittest调用，即使是最琐碎的例子。我无法确定我的安装是否混乱或正在发生什么。

IDLE 1.2.2      ==== No Subprocess ====
>>> import unittest
>>> 
>>> class Test(unittest.TestCase):
        def testA(self):
            a = 1
            self.assertEqual(a,1)

>>> unittest.main()
option -n not recognized
Usage: idle.pyw [options] [test] [...]

Options:
  -h, --help       Show this message
  -v, --verbose    Verbose output
  -q, --quiet      Minimal output

 Examples:
   idle.pyw                               - run default set of tests
   idle.pyw MyTestSuite                   - run suite 'MyTestSuite'
   idle.pyw MyTestCase.testSomething      - run MyTestCase.testSomething
   idle.pyw MyTestCase                    - run all 'test*' test methods
                                           in MyTestCase

Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    unittest.main()
  File "E:\Python25\lib\unittest.py", line 767, in __init__
    self.parseArgs(argv)
  File "E:\Python25\lib\unittest.py", line 796, in parseArgs
    self.usageExit(msg)
  File "E:\Python25\lib\unittest.py", line 773, in usageExit
    sys.exit(2)
SystemExit: 2
>>>

Answer 1

您的示例也在我的安装中退出。我可以通过更改使其执行测试并保留在Python中

unittest.main()

至

unittest.TextTestRunner().run(unittest.TestLoader().loadTestsFromTestCase(Test))

在Python库参考中可以找到更多信息。