Doesn't handle 2.7 setUpClass()/tearDownClass()

[wilstoff]

When using xmlrunner with python 2.7's unittest framework, xmlrunner suppresses python errors in setUpClass() and tearDownClass() functions.
Running unittest framework with xmlrunner:

unittest.main(testRunner=xmlrunner.XMLTestRunner(output='test_results'))

Output:

Running tests...
----------------------------------------------------------------------

======================================================================
Traceback (most recent call last):
  File "./test_tpa.py", line 587, in <module>
    unittest.main(testRunner=xmlrunner.XMLTestRunner(output='test_results'))
  File "/usr/lib/python2.7/unittest/main.py", line 95, in __init__
    self.runTests()
  File "/usr/lib/python2.7/unittest/main.py", line 229, in runTests
    self.result = testRunner.run(self.test)
  File "/usr/lib/python2.7/site-packages/xmlrunner/__init__.py", line 300, in run
    result.printErrors()
  File "/usr/lib/python2.7/unittest/runner.py", line 108, in printErrors
    self.printErrorList('ERROR', self.errors)
  File "/usr/lib/python2.7/site-packages/xmlrunner/__init__.py", line 122, in printErrorList
    (flavour, test_info.get_elapsed_time(), \
  File "/usr/lib/python2.7/site-packages/xmlrunner/__init__.py", line 33, in get_elapsed_time
    return self.test_result.stop_time - self.test_result.start_time
AttributeError: '_XMLTestResult' object has no attribute 'stop_time'

Running without xmltestrunner:

unittest.main()

Output:

E
======================================================================
ERROR: setUpClass (__main__.Test_TPA)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "./test_tpa.py", line 36, in setUpClass
    blah.blah()
NameError: global name 'blah' is not defined

----------------------------------------------------------------------
Ran 0 tests in 0.000s

FAILED (errors=1)

[danielfm]

This error cannot be reproduced on master branch, perhaps it has been fixed by one of the pull requests I merged recently.