經過多次研讀和調試unittest代碼，後來發現一個也可以重運行setUp()和dearDown()的解決辦法，那就是修改源碼，我們重新建一個模塊套件類來覆蓋原來的TestSuite類

實例代碼：

1. class Suit(unittest.TestSuite):
2. def run(self, result, debug=False):
3. failcount = 1#失敗總運行次數
4. class_num = 1
5. topLevel = False
6. if getattr(result, ‘_testRunEntered‘, False) is False:
7. result._testRunEntered = topLevel = True
9. for test in self:
10. case_num = 1
11. if result.shouldStop:
12. break
14. success_flag = True
15. while success_flag:
16. if _isnotsuite(test):
17. self._tearDownPreviousClass(test, result)
18. self._handleModuleFixture(test, result)
19. self._handleClassSetUp(test, result)
20. result._previousTestClass = test.__class__
21. if (getattr(test.__class__, ‘_classSetupFailed‘, False) or
22. getattr(result, ‘_moduleSetUpFailed‘, False)):
23. if class_num > failcount:
24. success_flag = False
25. else:
26. time.sleep(5)
27. result._previousTestClass = None
28. print ‘類%s第%s次重新初始化執行‘%(test.__class__,class_num)
29. class_num += 1
30. continue
32. if not debug:
33. test(result)
34. else:
35. test.debug()
37. if result.result[-1][0]==1 or result.result[-1][0]==2:#結果為fail和err用例判斷
38. if case_num > failcount:
39. success_flag = False
40. else:
41. print ‘用例%s第%s次重新執行‘%(test,case_num)
42. case_num += 1
43. else:
44. success_flag = False
46. if topLevel:
47. self._tearDownPreviousClass(None, result)
48. self._handleModuleTearDown(result)
49. result._testRunEntered = False
50. return result

然後測試使用

alltests=suit.Suit()

alltests.addtest(WidgetTestCase("testDefaultSize"))

runner =HTMLTestRunner.HTMLTestRunner(stream=fp,verbosity=2,title=‘Android測試報告‘,description=‘用例執行情況:‘,)
runner.run(alltests)

運行完後，有失敗重運行的用例都會打印在測試報告裏，方便查閱

python+selenium+unitest用例失敗重運行