Using `@unittest.skipIf` with older versions of Python

Question

With the unittest module, I like the feature to skip tests, but it is only available in Python 2.7+.

For example, consider test.py:

import unittest
try:
    import proprietary_module
except ImportError:
    proprietary_module = None

class TestProprietary(unittest.TestCase):
    @unittest.skipIf(proprietary_module is None, "requries proprietary module")
    def test_something_proprietary(self):
        self.assertTrue(proprietary_module is not None)

if __name__ == '__main__':
    unittest.main()

If I try to run a test with an earlier version of Python, I get an error:

Traceback (most recent call last):
  File "test.py", line 7, in <module>
    class TestProprietary(unittest.TestCase):
  File "test.py", line 8, in TestProprietary
    @unittest.skipIf(proprietary_module is None, "requries proprietary module")
AttributeError: 'module' object has no attribute 'skipIf'

Is there a way to "trick" older versions of Python to ignore the unittest decorator, and to skip the test?

Answer 1

unittest2 is a backport of the new features added to the unittest testing framework in Python 2.7. It is tested to run on Python 2.4 - 2.7.

To use unittest2 instead of unittest simply replace import unittest with import unittest2

Ref: http://pypi.python.org/pypi/unittest2