IOError('could not get source code') with @responses.activate decorator on Python 2.7

[medmunds]

In Python 2.7, test cases using the @responses.activate decorator die with an IOError in inspect.getsourcelines (added in v2.4.0).

These tests work with earlier releases; the problem still exists in v2.5.1 (latest as of this report).

I'm guessing this is similar to (but not fixed by) #187.

To reproduce

$ python --version
Python 2.7.16
$ pip install unittest-xml-reporting==2.5.1 requests responses mock

tests.py:

import unittest
import xmlrunner
import responses

class DecoratedTests(unittest.TestCase):
    @responses.activate
    def test_responses(self):
        self.assertEqual(1 + 1, 2)

if __name__ == '__main__':
    unittest.main(
        testRunner=xmlrunner.XMLTestRunner(output='test-reports'),
        failfast=False, buffer=False, catchbreak=False)

Results

$ python tests.py
Running tests...
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests.py", line 15, in <module>
    failfast=False, buffer=False, catchbreak=False)
  [... snip -- full stack trace included below]
  File "...site-packages/xmlrunner/result.py", line 273, in startTest
    _, self.lineno = inspect.getsourcelines(test_method)
  [... snip]
  File "...python2.7/inspect.py", line 537, in findsource
    raise IOError('could not get source code')
IOError: could not get source code

Expected

No error. (Try repeating with pip install -U unittest-xml-reporting==2.3.2.)

More info

Full stack trace

Traceback (most recent call last):
  File "tests.py", line 15, in <module>
    failfast=False, buffer=False, catchbreak=False)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.py", line 95, in __init__
    self.runTests()
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.py", line 232, in runTests
    self.result = testRunner.run(self.test)
  File "/Users/medmunds/.local/share/virtualenvs/xmlrunner-bug-xAnTk8wk/lib/python2.7/site-packages/xmlrunner/runner.py", line 70, in run
    test(result)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/suite.py", line 70, in __call__
    return self.run(*args, **kwds)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/suite.py", line 108, in run
    test(result)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/suite.py", line 70, in __call__
    return self.run(*args, **kwds)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/suite.py", line 108, in run
    test(result)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/case.py", line 393, in __call__
    return self.run(*args, **kwds)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/case.py", line 304, in run
    result.startTest(self)
  File "/Users/medmunds/.local/share/virtualenvs/xmlrunner-bug-xAnTk8wk/lib/python2.7/site-packages/xmlrunner/result.py", line 273, in startTest
    _, self.lineno = inspect.getsourcelines(test_method)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/inspect.py", line 689, in getsourcelines
    lines, lnum = findsource(object)
  File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/inspect.py", line 537, in findsource
    raise IOError('could not get source code')
IOError: could not get source code

pip list

Package                Version
---------------------- --------
certifi                2019.3.9
chardet                3.0.4
cookies                2.2.1
funcsigs               1.0.2
idna                   2.8
mock                   2.0.0
pbr                    5.1.3
pip                    19.0.3
requests               2.21.0
responses              0.10.6
setuptools             41.0.0
six                    1.12.0
unittest-xml-reporting 2.5.1
urllib3                1.24.1
wheel                  0.33.1

[rakesh-ridecell]

we are facing same issue in our project too.