test_generator() test failure - Wrong number of items found

[pengdake]

I get success result when I run "tox -epy27 -- mistral.tests.unit.actions.openstack.test_generator.GeneratorTest.test_generator"

But I get failed result when I run the test by testtools (https://wiki.openstack.org/wiki/Testr#Debugging_.28pdb.29_Tests)

release-bug: https://bugs.launchpad.net/mistral/+bug/1757036

[Dougal Matthews (d0ugal)]

Can you provide the command you used to run the test with testtools and also show us the error received?

[Corey Bryant (corey.bryant)]

Pasting the error that I see here:

======================================================================
FAIL: mistral.tests.unit.actions.openstack.test_generator.GeneratorTest.test_generator
mistral.tests.unit.actions.openstack.test_generator.GeneratorTest.test_generator
----------------------------------------------------------------------
_StringException: Traceback (most recent call last):
  File "mistral/tests/unit/actions/openstack/test_generator.py", line 102, in test_generator
    name=action_name
  File "mistral/tests/unit/base.py", line 141, in _assert_single_item
    return self._assert_multiple_items(items, 1, **props)[0]
  File "mistral/tests/unit/base.py", line 164, in _assert_multiple_items
    "expected=%s, found=%s]" % (props, count, found))
  File "/usr/lib/python2.7/dist-packages/unittest2/case.py", line 690, in fail
    raise self.failureException(msg)
AssertionError: Wrong number of items found [props={'name': 'senlin.get_profile'}, expected=1, found=0]

[Corey Bryant (corey.bryant)]

We're just running tests with 'stestr run'. Typically issues like this occur due to dependency differences where the tox virtualenv has a dependency that differs from the failing environment. I'm hitting this in Ubuntu package builds so I imagine we have a dependency that falls within the allowed requirements constraints, but actually doesn't work.

[Corey Bryant (corey.bryant)]

Some more debug:

DEBUG: action_classes=[]
DEBUG: action_name=senlin.get_profile

[Corey Bryant (corey.bryant)]

I'm seeing this on train now with:

======================================================================
FAIL: mistral.tests.unit.actions.openstack.test_generator.GeneratorTest.test_generator
mistral.tests.unit.actions.openstack.test_generator.GeneratorTest.test_generator
----------------------------------------------------------------------
_StringException: Traceback (most recent call last):
  File "/<<PKGBUILDDIR>>/mistral/tests/unit/actions/openstack/test_generator.py", line 117, in test_generator
    name=action_name
  File "/<<PKGBUILDDIR>>/mistral/tests/unit/base.py", line 140, in _assert_single_item
    return self._assert_multiple_items(items, 1, **props)[0]
  File "/<<PKGBUILDDIR>>/mistral/tests/unit/base.py", line 163, in _assert_multiple_items
    "expected=%s, found=%s]" % (props, count, found))
  File "/usr/lib/python3/dist-packages/unittest2/case.py", line 690, in fail
    raise self.failureException(msg)
AssertionError: Wrong number of items found [props={'name': 'ironic.node_list'}, expected=1, found=0]