Traceback (most recent call last):
  File "/usr/lib64/python3.4/unittest/mock.py", line 1136, in patched
    return func(*args, **keywargs)
  File "/home/john/openstack/ironic/ironic/tests/drivers/irmc/test_management.py", line 301, in test_management_interface_get_sensors_data_exception
    str(e))
  File "/home/john/openstack/ironic/.tox/py34/lib/python3.4/site-packages/testtools/testcase.py", line 350, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/home/john/openstack/ironic/.tox/py34/lib/python3.4/site-packages/testtools/testcase.py", line 435, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: !=:
reference = 'Failed to get sensor data for node 1be26c0b-03f2-4d2e-ae87-c02d7f33c123. Error: Fake Error'
actual    = "Failed to get sensor data for node 1be26c0b-03f2-4d2e-ae87-c02d7f33c123. Error: 'InvalidParameterValue' object is not iterable"
Ran 2538 tests in 8.638s (+0.454s)
FAILED (id=25, failures=1 (+1), skips=15)
error: testr failed (1)
ERROR: InvocationError: "/usr/bin/bash -c TESTS_DIR=./ironic/tests/ python setup.py testr --slowest --testr-args=''"
py34 finish: runtests after 18.77 seconds