This is related to bug 1475353 but in this case unit tests fail if the file exists but is empty. Either way we shouldn't be trying to read from a file on the system in unit tests, so we should set the CONF.libvirt.sysinfo_serial config option value to 'none' in the tests.
Example failure (this is from Juno):
nova.tests.virt.test_virt_drivers.LibvirtConnTestCase.test_block_stats
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Captured traceback:
~~~~~~~~~~~~~~~~~~~
Traceback (most recent call last):
File "nova/tests/virt/test_virt_drivers.py", line 54, in wrapped_func
return f(self, *args, **kwargs)
File "nova/tests/virt/test_virt_drivers.py", line 521, in test_block_stats
instance_ref, network_info = self._get_running_instance()
File "nova/tests/virt/test_virt_drivers.py", line 228, in _get_running_instance
[], 'herp', network_info=network_info)
File "nova/virt/libvirt/driver.py", line 2661, in spawn
write_to_disk=True)
File "nova/virt/libvirt/driver.py", line 4182, in _get_guest_xml
context)
File "nova/virt/libvirt/driver.py", line 3863, in _get_guest_config
guest.sysinfo = self._get_guest_config_sysinfo(instance)
File "nova/virt/libvirt/driver.py", line 3582, in _get_guest_config_sysinfo
sysinfo.system_serial = self._sysinfo_serial_func()
File "nova/virt/libvirt/driver.py", line 3571, in _get_host_sysinfo_serial_auto
return self._get_host_sysinfo_serial_os()
File "nova/virt/libvirt/driver.py", line 3567, in _get_host_sysinfo_serial_os
return str(uuid.UUID(f.read().split()[0]))
IndexError: list index out of range
Traceback (most recent call last):
_StringException: Empty attachments:
stderr
stdout
Fix proposed to branch: master
Review: https:/