是否在测试用例之外使用TestCase.assertEqual()呢?

这通常通过多重继承来实现:

通用_methods.py:

class CommonMethods:
  def common_method1(self, stuff):
    blah=stuff
    self.failUnless(len(blah) > 5)
        ...
...

import unittest
from common_methods import CommonMethods
class TestPayments(unittest.TestCase, CommonMethods):
 def test_0(self):
  self.common_method1("foo")

听起来你想要这个,至少从错误。。。

unittest_foo.py:

import unittest
from common_methods import *

class TestPayments(unittest.TestCase):
    def test_0(self):
        common_method1(self, "foo")

通用_methods.py:

def common_method1( self, stuff ):
    blah=stuff
    self.failUnless(len(blah) > 5)