AttributeError: 'TextTestResult' object has no attribute 'assertIn' "AttributeError: 'TextTestResult'对象没有'assertIn'属性"

我正在尝试使用Selenium编写一些Python代码，我在simpleUsageUnittest.py中定义了一些测试：\n

import unittest
import time
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
class PythonOrgSearch(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Firefox()
#   @unittest.skip("skip test_001")
    def test_001_search_in_python_org(self):
        driver = self.driver
        driver.get("http://www.python.org")
        self.assertIn("Python", driver.title)
        elem = driver.find_element_by_name("q")
        elem.send_keys("selenium")
        elem.send_keys(Keys.RETURN)
#   @unittest.skip("skip test_002")
    def test_002_goole_and_stack_test_test(self):
        driver_g = self.driver
        driver_g.get("http://www.google.com")
        self.assertIn("Google", driver_g.title)
        body_g = driver_g.find_element_by_tag_name("body")
        body_g.send_keys(Keys.CONTROL + 't')
        driver_g.get("http://stackoverflow.com")
        self.assertIn("Stack", driver_g.title)
    def tearDown(self):
        self.driver.close()
if __name__ == "__main__":
    unittest.main(warnings = 'ignore')

\n这部分单独运行完全正常，但是当我尝试创建一些测试套件时，testTestSuite.py出现了问题：\n

import unittest
import simpleUsageUnittest
import sys
def suite():
    testSuite = unittest.TestSuite()
    testSuite.addTest(simpleUsageUnittest.PythonOrgSearch.setUp)
    testSuite.addTest(simpleUsageUnittest.PythonOrgSearch.test_001_search_in_python_org)
    testSuite.addTest(simpleUsageUnittest.PythonOrgSearch.test_002_goole_and_stack_test_test)
    testSuite.addTest(simpleUsageUnittest.PythonOrgSearch.tearDown)
    return testSuite
if __name__ == "__main__":
    result = unittest.TextTestRunner(verbosity=2).run(suite())
    sys.exit(not result.wasSuccessful())

\n在运行这个测试套件时，我遇到了AttributeError: \'TextTestResult\' object has no attribute \'assertIn\'的错误，由于我不太明白它的意思，所以无法修复它；）如果我在simpleUsageUnittest.py中删除assertIn行，那么它又可以正常工作，但这当然不是我想要做的！此外，Asserts in Python 2.7 not working for me example assertIn对我没有太大帮助，因为我使用的是Python 3.3.5和Selenium 2.41.0。有人能向我解释一下吗？或者指导我可以使用哪些属性来保存我的断言？;)\n完整追踪：\n

C:\Users\zzz\Python\selenium_tutorial>python testTestSuite.py
Traceback (most recent call last):
  File "testTestSuite.py", line 14, in 
    result = unittest.TextTestRunner(verbosity=2).run(suite())
  File "C:\Python33\lib\unittest\runner.py", line 168, in run
    test(result)
  File "C:\Python33\lib\unittest\suite.py", line 67, in __call__
    return self.run(*args, **kwds)
  File "C:\Python33\lib\unittest\suite.py", line 105, in run
    test(result)
  File "C:\Users\zzz\Python\selenium_tutorial\simpleUsageUnittest.py", line
 18, in test_001_search_in_python_org
    self.assertIn("Python", driver.title)
AttributeError: 'TextTestResult' object has no attribute 'assertIn'

\n解决方案\n好的，看起来在我的testTestSuite.py中，执行时TextTestRunner将simpleUsageUnittest.py中的\"self.assertIn\"行视为self == TextTestRunner而不是self == TestCase（我不知道我是否解释/理解正确，但这是我看到的方式；））。下面是修复后的testTestSuite.py：\n

import unittest
import simpleUsageUnittest
import sys
def suite():
    testSuite = unittest.TestSuite()
    testSuite.addTest(simpleUsageUnittest.PythonOrgSearch('test_001_search_in_python_org'))
    testSuite.addTest(simpleUsageUnittest.PythonOrgSearch('test_002_goole_and_stack_test_test'))
    return testSuite
if __name__ == "__main__":
    result = unittest.TextTestRunner(verbosity=2).run(suite())
    sys.exit(not result.wasSuccessful())

\n因为\'setUp\'和\'tearDown\'是在每个\'test\'之后自动调用的，所以它们被省略了。