tox env for the integration tests is now renamed to 'integration'
as it is no longer run under python 2.7.
__hash__() method is now defined in integration_tests.helpers.BaseTestCase
to avoid unhashable error during loading django test runner. This is
originally caused by the fact that the base testcase class for integration
tests is implemented on top of testtools and testtools does not define
__hash__() method. In Python 3, __hash__() method must be defined
if a class (re)defines __eq__() method to make the class hashable [1].
Ideally integration base TestCase class can be implemented on top of
Django test case, but the current implementation depends on features
from testtools a lot, so it seems better to add __hash__() method
as a workaround.
Unbound methods don't exist in Python 3[2], so six.create_unbound_method
doesn' work as expected. To dynamic method generation we have to use new
descriptors interface [3] or just generate new
functools.partialmethod [4] function introduced in Python 3.4 to
generate class methods with pre-defined 'path' argument and pass 'self'
as a first function argument for class instance.
[1] https://docs.python.org/3.5/reference/datamodel.html#object.__hash__
[2] https://six.readthedocs.io/#six.create_unbound_method
[3] https://docs.python.org/3/howto/descriptor.html
[4] https://docs.python.org/3/library/functools.html#functools.partialmethod
Change-Id: I5c3078bdc66e33fe676d431bb28d92b35faaf479
43f8c3b1f5