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"""Implementations of unittest features from the future."""
# Use unittest2 if it's available, otherwise unittest. This gives us
# backported features for 2.6.
try:
import unittest2 as unittest # pylint: disable=F0401
except ImportError:
import unittest
def _need(method):
"""Do we need to define our own `method` method?"""
return not hasattr(unittest.TestCase, method)
class TestCase(unittest.TestCase):
"""Just like unittest.TestCase, but with assert methods added.
Designed to be compatible with 3.1 unittest. Methods are only defined if
`unittest` doesn't have them.
"""
if _need('assertSameElements'):
def assertSameElements(self, s1, s2):
"""Assert that the two arguments are equal as sets."""
self.assertEqual(set(s1), set(s2))
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