使用 TestCase.assertRaises(或 TestCase.failUnlessRaises)来自 unittest 模块，例如:

Use TestCase.assertRaises (or TestCase.failUnlessRaises) from the unittest module, for example:

import mymod

class MyTestCase(unittest.TestCase):
    def test1(self):
        self.assertRaises(SomeCoolException, mymod.myfunc)