charm-neutron-openvswitch/unit_tests/test_pci_helper.py
Hervé Beraud 9951beeff2 Use unittest.mock instead of mock
The mock third party library was needed for mock support in py2
runtimes. Since we now only support py36 and later, we can use the
standard lib unittest.mock module instead.

Note that https://github.com/openstack/charms.openstack is used during tests
and he need `mock`, unfortunatelly it doesn't declare `mock` in its
requirements so it retrieve mock from other charm project (cross dependency).
So we depend on charms.openstack first and when
Ib1ed5b598a52375e29e247db9ab4786df5b6d142 will be merged then CI
will pass without errors.

Depends-On: Ib1ed5b598a52375e29e247db9ab4786df5b6d142
Change-Id: I8eedfa05c07067bb9a0d3a331d1868210534d84c
2021-12-15 14:11:43 +00:00

112 lines
3.5 KiB
Python

#!/usr/bin/python
#
# Copyright 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import pci
from test_utils import patch_open
from unittest.mock import patch, MagicMock
import pci_responses
import os
def check_device(device, attr_dict):
equal = device.interface_name == attr_dict['interface_name'] and \
device.mac_address == attr_dict['mac_address'] and \
device.pci_address == attr_dict['pci_address'] and \
device.state == attr_dict['state']
return equal
def mocked_subprocess(subproc_map=None):
def _subproc(cmd, stdin=None):
for key in pci_responses.COMMANDS.keys():
if pci_responses.COMMANDS[key] == cmd:
return subproc_map[key]
elif pci_responses.COMMANDS[key] == cmd[:-1]:
return subproc_map[cmd[-1]][key]
if not subproc_map:
subproc_map = pci_responses.NET_SETUP
return _subproc
class mocked_filehandle(object):
def _setfilename(self, fname, omode):
self.FILENAME = fname
def _getfilecontents_read(self):
return pci_responses.FILE_CONTENTS[self.FILENAME]
def _getfilecontents_readlines(self):
return pci_responses.FILE_CONTENTS[self.FILENAME].split('\n')
def mocked_globs(path):
check_path = path.rstrip('*').rstrip('/')
dirs = []
for sdir in pci_responses.SYS_TREE:
if check_path in sdir:
dirs.append(sdir)
return dirs
def mocked_islink(link):
resolved_relpath = mocked_resolve_link(link)
if pci_responses.SYS_TREE.get(resolved_relpath):
return True
else:
return False
def mocked_resolve_link(link):
resolved_relpath = None
for sdir in pci_responses.SYS_TREE:
if sdir in link:
rep_dir = "{}/{}".format(os.path.dirname(sdir),
pci_responses.SYS_TREE[sdir])
resolved_symlink = link.replace(sdir, rep_dir)
resolved_relpath = os.path.abspath(resolved_symlink)
return resolved_relpath
def mocked_realpath(link):
resolved_link = mocked_resolve_link(link)
return pci_responses.SYS_TREE[resolved_link]
@patch('pci.cached')
@patch('pci.log')
@patch('pci.subprocess.Popen')
@patch('pci.subprocess.check_output')
@patch('pci.glob.glob')
@patch('pci.os.path.islink')
def pci_devs(_osislink, _glob, _check_output, _Popen, _log,
_cached, subproc_map=None):
_glob.side_effect = mocked_globs
_osislink.side_effect = mocked_islink
_check_output.side_effect = mocked_subprocess(
subproc_map=subproc_map)
with patch_open() as (_open, _file), \
patch('pci.os.path.realpath') as _realpath:
super_fh = mocked_filehandle()
_file.readlines = MagicMock()
_open.side_effect = super_fh._setfilename
_file.read.side_effect = super_fh._getfilecontents_read
_file.readlines.side_effect = super_fh._getfilecontents_readlines
_realpath.side_effect = mocked_realpath
devices = pci.PCINetDevices()
return devices