Comment 0 for bug 1765122

nova.tests.unit.virt.test_images.QemuTestCase.test_qemu_info_with_errors is failing in both py27 and py36 tox environments due to a missing mock.

This system does not have qemu(-img) installed in it and running unit tests returns the following:

==============================
Failed 1 tests - output below:
==============================

nova.tests.unit.virt.test_images.QemuTestCase.test_qemu_info_with_errors
------------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    b'Traceback (most recent call last):'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/nova/virt/images.py", line 73, in qemu_img_info'
    b' out, err = utils.execute(*cmd, prlimit=QEMU_IMG_LIMITS)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/nova/utils.py", line 231, in execute'
    b' return processutils.execute(*cmd, **kwargs)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/oslo_concurrency/processutils.py", line 424, in execute'
    b' cmd=sanitized_cmd)'
    b'oslo_concurrency.processutils.ProcessExecutionError: Unexpected error while running command.'
    b'Command: /home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/bin/python -m oslo_concurrency.prlimit --as=1073741824 --cpu=30 -- env LC_ALL=C LANG=C qemu-img info /fake/path'
    b'Exit code: 127'
    b"Stdout: ''"
    b"Stderr: '/usr/bin/env: \xe2\x80\x98qemu-img\xe2\x80\x99: No such file or directory\\n'"
    b''
    b'During handling of the above exception, another exception occurred:'
    b''
    b'Traceback (most recent call last):'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/mock/mock.py", line 1305, in patched'
    b' return func(*args, **keywargs)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/nova/tests/unit/virt/test_images.py", line 37, in test_qemu_info_with_errors'
    b" '/fake/path')"
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/testcase.py", line 485, in assertRaises'
    b' self.assertThat(our_callable, matcher)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/testcase.py", line 496, in assertThat'
    b' mismatch_error = self._matchHelper(matchee, matcher, message, verbose)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/testcase.py", line 547, in _matchHelper'
    b' mismatch = matcher.match(matchee)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/matchers/_exception.py", line 108, in match'
    b' mismatch = self.exception_matcher.match(exc_info)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/matchers/_higherorder.py", line 62, in match'
    b' mismatch = matcher.match(matchee)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/testcase.py", line 475, in match'
    b' reraise(*matchee)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/_compat3x.py", line 16, in reraise'
    b' raise exc_obj.with_traceback(exc_tb)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/matchers/_exception.py", line 101, in match'
    b' result = matchee()'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/lib/python3.6/site-packages/testtools/testcase.py", line 1049, in __call__'
    b' return self._callable_object(*self._args, **self._kwargs)'
    b' File "/home/jaypipes/src/git.openstack.org/openstack/nova/nova/virt/images.py", line 87, in qemu_img_info'
    b' raise exception.InvalidDiskInfo(reason=msg)'
    b'nova.exception.InvalidDiskInfo: Disk info file is invalid: qemu-img failed to execute on /fake/path : Unexpected error while running command.'
    b'Command: /home/jaypipes/src/git.openstack.org/openstack/nova/.tox/py36/bin/python -m oslo_concurrency.prlimit --as=1073741824 --cpu=30 -- env LC_ALL=C LANG=C qemu-img info /fake/path'
    b'Exit code: 127'
    b"Stdout: ''"
    b"Stderr: '/usr/bin/env: \xe2\x80\x98qemu-img\xe2\x80\x99: No such file or directory\\n'"
    b''