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salt/tests/unit/modules/test_snapper.py

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# -*- coding: utf-8 -*-
'''
Unit tests for the Snapper module
:codeauthor: Duncan Mac-Vicar P. <dmacvicar@suse.de>
:codeauthor: Pablo Suárez Hernández <psuarezhernandez@suse.de>
'''
# Import Python libs
from __future__ import absolute_import, print_function, unicode_literals
import sys
# Import Salt Testing libs
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.unit import TestCase, skipIf
from tests.support.mock import (
NO_MOCK,
NO_MOCK_REASON,
MagicMock,
patch,
mock_open,
)
# Import Salt libs
from salt.ext import six
from salt.exceptions import CommandExecutionError
import salt.modules.snapper as snapper
DBUS_RET = {
'ListSnapshots': [
[42, 1, 0, 1457006571,
0, 'Some description', '',
{'userdata1': 'userval1', 'salt_jid': '20160607130930720112'}],
[43, 2, 42, 1457006572,
0, 'Blah Blah', '',
{'userdata2': 'userval2', 'salt_jid': '20160607130930720112'}]
],
'ListConfigs': [
['root', '/', {
'SUBVOLUME': '/', 'NUMBER_MIN_AGE': '1800',
'TIMELINE_LIMIT_YEARLY': '4-10', 'NUMBER_LIMIT_IMPORTANT': '10',
'FSTYPE': 'btrfs', 'TIMELINE_LIMIT_MONTHLY': '4-10',
'ALLOW_GROUPS': '', 'EMPTY_PRE_POST_MIN_AGE': '1800',
'EMPTY_PRE_POST_CLEANUP': 'yes', 'BACKGROUND_COMPARISON': 'yes',
'TIMELINE_LIMIT_HOURLY': '4-10', 'ALLOW_USERS': '',
'TIMELINE_LIMIT_WEEKLY': '0', 'TIMELINE_CREATE': 'no',
'NUMBER_CLEANUP': 'yes', 'TIMELINE_CLEANUP': 'yes',
'SPACE_LIMIT': '0.5', 'NUMBER_LIMIT': '10',
'TIMELINE_MIN_AGE': '1800', 'TIMELINE_LIMIT_DAILY': '4-10',
'SYNC_ACL': 'no', 'QGROUP': '1/0'}
]
],
'GetFiles': [
['/root/.viminfo', 8],
['/tmp/foo', 52],
['/tmp/foo2', 1],
['/tmp/foo3', 2],
['/var/log/snapper.log', 8],
['/var/cache/salt/minion/extmods/modules/snapper.py', 8],
['/var/cache/salt/minion/extmods/modules/snapper.pyc', 8],
],
}
FILE_CONTENT = {
'/tmp/foo': {
"pre": "dummy text",
"post": "another foobar"
},
'/tmp/foo2': {
"post": "another foobar"
}
}
MODULE_RET = {
'SNAPSHOTS': [
{
'userdata': {'userdata1': 'userval1', 'salt_jid': '20160607130930720112'},
'description': 'Some description', 'timestamp': 1457006571,
'cleanup': '', 'user': 'root', 'type': 'pre', 'id': 42
},
{
'pre': 42,
'userdata': {'userdata2': 'userval2', 'salt_jid': '20160607130930720112'},
'description': 'Blah Blah', 'timestamp': 1457006572,
'cleanup': '', 'user': 'root', 'type': 'post', 'id': 43
}
],
'LISTCONFIGS': {
'root': {
'SUBVOLUME': '/', 'NUMBER_MIN_AGE': '1800',
'TIMELINE_LIMIT_YEARLY': '4-10', 'NUMBER_LIMIT_IMPORTANT': '10',
'FSTYPE': 'btrfs', 'TIMELINE_LIMIT_MONTHLY': '4-10',
'ALLOW_GROUPS': '', 'EMPTY_PRE_POST_MIN_AGE': '1800',
'EMPTY_PRE_POST_CLEANUP': 'yes', 'BACKGROUND_COMPARISON': 'yes',
'TIMELINE_LIMIT_HOURLY': '4-10', 'ALLOW_USERS': '',
'TIMELINE_LIMIT_WEEKLY': '0', 'TIMELINE_CREATE': 'no',
'NUMBER_CLEANUP': 'yes', 'TIMELINE_CLEANUP': 'yes',
'SPACE_LIMIT': '0.5', 'NUMBER_LIMIT': '10',
'TIMELINE_MIN_AGE': '1800', 'TIMELINE_LIMIT_DAILY': '4-10',
'SYNC_ACL': 'no', 'QGROUP': '1/0'
}
},
'GETFILES': {
'/root/.viminfo': {'status': ['modified']},
'/tmp/foo': {'status': ['type changed', 'permission changed', 'owner changed']},
'/tmp/foo2': {'status': ['created']},
'/tmp/foo3': {'status': ['deleted']},
'/var/log/snapper.log': {'status': ['modified']},
'/var/cache/salt/minion/extmods/modules/snapper.py': {'status': ['modified']},
'/var/cache/salt/minion/extmods/modules/snapper.pyc': {'status': ['modified']},
},
'DIFF': {
'/tmp/foo': {
'comment': 'text file changed',
'diff': "--- /.snapshots/55/snapshot/tmp/foo\n"
"+++ /tmp/foo\n"
"@@ -1 +1 @@\n"
"-dummy text"
"+another foobar"
},
'/tmp/foo2': {
'comment': 'text file created',
'diff': "--- /.snapshots/55/snapshot/tmp/foo2\n"
"+++ /tmp/foo2\n"
"@@ -0,0 +1 @@\n"
"+another foobar",
},
'/tmp/foo26': {
'comment': 'text file created',
'diff': "--- /.snapshots/55/snapshot/tmp/foo2 \n"
"+++ /tmp/foo2 \n"
"@@ -1,0 +1,1 @@\n"
"+another foobar",
},
'/tmp/foo3': {
'comment': 'binary file changed',
'old_sha256_digest': 'e61f8b762d83f3b4aeb3689564b0ffbe54fa731a69a1e208dc9440ce0f69d19b',
'new_sha256_digest': 'f18f971f1517449208a66589085ddd3723f7f6cefb56c141e3d97ae49e1d87fa',
}
}
}
@skipIf(sys.platform.startswith('win'), 'Snapper not available on Windows')
@skipIf(NO_MOCK, NO_MOCK_REASON)
class SnapperTestCase(TestCase, LoaderModuleMockMixin):
def setup_loader_modules(self):
class DBusException(BaseException):
get_dbus_name = 'foo'
dbus_mock = MagicMock()
dbus_mock.configure_mock(DBusException=DBusException)
return {snapper: {'dbus': dbus_mock, 'snapper': MagicMock()}}
def test__snapshot_to_data(self):
data = snapper._snapshot_to_data(DBUS_RET['ListSnapshots'][0]) # pylint: disable=protected-access
self.assertEqual(data['id'], 42)
self.assertNotIn('pre', data)
self.assertEqual(data['type'], 'pre')
self.assertEqual(data['user'], 'root')
self.assertEqual(data['timestamp'], 1457006571)
self.assertEqual(data['description'], 'Some description')
self.assertEqual(data['cleanup'], '')
self.assertEqual(data['userdata']['userdata1'], 'userval1')
def test_list_snapshots(self):
with patch('salt.modules.snapper.snapper.ListSnapshots', MagicMock(return_value=DBUS_RET['ListSnapshots'])):
self.assertEqual(snapper.list_snapshots(), MODULE_RET["SNAPSHOTS"])
def test_get_snapshot(self):
with patch('salt.modules.snapper.snapper.GetSnapshot', MagicMock(return_value=DBUS_RET['ListSnapshots'][0])):
self.assertEqual(snapper.get_snapshot(), MODULE_RET["SNAPSHOTS"][0])
self.assertEqual(snapper.get_snapshot(number=42), MODULE_RET["SNAPSHOTS"][0])
self.assertNotEqual(snapper.get_snapshot(number=42), MODULE_RET["SNAPSHOTS"][1])
def test_list_configs(self):
with patch('salt.modules.snapper.snapper.ListConfigs', MagicMock(return_value=DBUS_RET['ListConfigs'])):
self.assertEqual(snapper.list_configs(), MODULE_RET["LISTCONFIGS"])
def test_get_config(self):
with patch('salt.modules.snapper.snapper.GetConfig', MagicMock(return_value=DBUS_RET['ListConfigs'][0])):
self.assertEqual(snapper.get_config(), DBUS_RET["ListConfigs"][0])
def test_set_config(self):
with patch('salt.modules.snapper.snapper.SetConfig', MagicMock()):
opts = {'sync_acl': True, 'dummy': False, 'foobar': 1234}
self.assertEqual(snapper.set_config(opts), True)
def test_status_to_string(self):
self.assertEqual(snapper.status_to_string(1), ["created"])
self.assertEqual(snapper.status_to_string(2), ["deleted"])
self.assertEqual(snapper.status_to_string(4), ["type changed"])
self.assertEqual(snapper.status_to_string(8), ["modified"])
self.assertEqual(snapper.status_to_string(16), ["permission changed"])
self.assertListEqual(snapper.status_to_string(24), ["modified", "permission changed"])
self.assertEqual(snapper.status_to_string(32), ["owner changed"])
self.assertEqual(snapper.status_to_string(64), ["group changed"])
self.assertListEqual(snapper.status_to_string(97), ["created", "owner changed", "group changed"])
self.assertEqual(snapper.status_to_string(128), ["extended attributes changed"])
self.assertEqual(snapper.status_to_string(256), ["ACL info changed"])
def test_create_config(self):
with patch('salt.modules.snapper.snapper.CreateConfig', MagicMock()), \
patch('salt.modules.snapper.snapper.GetConfig', MagicMock(return_value=DBUS_RET['ListConfigs'][0])):
opts = {
'name': 'testconfig',
'subvolume': '/foo/bar/',
'fstype': 'btrfs',
'template': 'mytemplate',
'extra_opts': {"NUMBER_CLEANUP": False},
}
with patch('salt.modules.snapper.set_config', MagicMock()) as set_config_mock:
self.assertEqual(snapper.create_config(**opts), DBUS_RET['ListConfigs'][0])
set_config_mock.assert_called_with("testconfig", **opts['extra_opts'])
with patch('salt.modules.snapper.set_config', MagicMock()) as set_config_mock:
del opts['extra_opts']
self.assertEqual(snapper.create_config(**opts), DBUS_RET['ListConfigs'][0])
assert not set_config_mock.called
self.assertRaises(CommandExecutionError, snapper.create_config)
def test_create_snapshot(self):
with patch('salt.modules.snapper.snapper.CreateSingleSnapshot', MagicMock(return_value=1234)), \
patch('salt.modules.snapper.snapper.CreatePreSnapshot', MagicMock(return_value=1234)), \
patch('salt.modules.snapper.snapper.CreatePostSnapshot', MagicMock(return_value=1234)):
for snapshot_type in ['pre', 'post', 'single']:
opts = {
'__pub_jid': 20160607130930720112,
'type': snapshot_type,
'description': 'Test description',
'cleanup_algorithm': 'number',
'pre_number': 23,
}
self.assertEqual(snapper.create_snapshot(**opts), 1234)
def test_delete_snapshot_id_success(self):
with patch('salt.modules.snapper.snapper.DeleteSnapshots', MagicMock()), \
patch('salt.modules.snapper.snapper.ListSnapshots', MagicMock(return_value=DBUS_RET['ListSnapshots'])):
self.assertEqual(snapper.delete_snapshot(snapshots_ids=43), {"root": {"ids": [43], "status": "deleted"}})
self.assertEqual(snapper.delete_snapshot(snapshots_ids=[42, 43]),
{"root": {"ids": [42, 43], "status": "deleted"}})
def test_delete_snapshot_id_fail(self):
with patch('salt.modules.snapper.snapper.DeleteSnapshots', MagicMock()), \
patch('salt.modules.snapper.snapper.ListSnapshots', MagicMock(return_value=DBUS_RET['ListSnapshots'])):
self.assertRaises(CommandExecutionError, snapper.delete_snapshot)
self.assertRaises(CommandExecutionError, snapper.delete_snapshot, snapshots_ids=1)
self.assertRaises(CommandExecutionError, snapper.delete_snapshot, snapshots_ids=[1, 2])
def test_modify_snapshot(self):
with patch('salt.modules.snapper.snapper.SetSnapshot', MagicMock()):
_ret = {
'userdata': {'userdata2': 'uservalue2'},
'description': 'UPDATED DESCRIPTION', 'timestamp': 1457006571,
'cleanup': 'number', 'user': 'root', 'type': 'pre', 'id': 42
}
_opts = {
'config': 'root',
'snapshot_id': 42,
'cleanup': 'number',
'description': 'UPDATED DESCRIPTION',
'userdata': {'userdata2': 'uservalue2'},
}
with patch('salt.modules.snapper.get_snapshot', MagicMock(side_effect=[DBUS_RET['ListSnapshots'][0], _ret])):
self.assertDictEqual(snapper.modify_snapshot(**_opts), _ret)
def test__get_num_interval(self):
with patch('salt.modules.snapper._get_last_snapshot', MagicMock(return_value={'id': 42})):
self.assertEqual(snapper._get_num_interval(config=None, num_pre=None, num_post=None), (42, 0)) # pylint: disable=protected-access
self.assertEqual(snapper._get_num_interval(config=None, num_pre=None, num_post=50), (42, 50)) # pylint: disable=protected-access
self.assertEqual(snapper._get_num_interval(config=None, num_pre=42, num_post=50), (42, 50)) # pylint: disable=protected-access
def test_run(self):
patch_dict = {
'snapper.create_snapshot': MagicMock(return_value=43),
'test.ping': MagicMock(return_value=True),
}
with patch.dict(snapper.__salt__, patch_dict):
self.assertEqual(snapper.run("test.ping"), True)
self.assertRaises(CommandExecutionError, snapper.run, "unknown.func")
def test_status(self):
with patch('salt.modules.snapper._get_num_interval', MagicMock(return_value=(42, 43))), \
patch('salt.modules.snapper.snapper.GetComparison', MagicMock()), \
patch('salt.modules.snapper.snapper.GetFiles', MagicMock(return_value=DBUS_RET['GetFiles'])), \
patch('salt.modules.snapper.snapper.ListConfigs', MagicMock(return_value=DBUS_RET['ListConfigs'])):
if six.PY3:
self.assertCountEqual(snapper.status(), MODULE_RET['GETFILES'])
self.assertCountEqual(snapper.status(num_pre="42", num_post=43), MODULE_RET['GETFILES'])
self.assertCountEqual(snapper.status(num_pre=42), MODULE_RET['GETFILES'])
self.assertCountEqual(snapper.status(num_post=43), MODULE_RET['GETFILES'])
else:
self.assertItemsEqual(snapper.status(), MODULE_RET['GETFILES'])
self.assertItemsEqual(snapper.status(num_pre="42", num_post=43), MODULE_RET['GETFILES'])
self.assertItemsEqual(snapper.status(num_pre=42), MODULE_RET['GETFILES'])
self.assertItemsEqual(snapper.status(num_post=43), MODULE_RET['GETFILES'])
def test_changed_files(self):
with patch('salt.modules.snapper.status', MagicMock(return_value=MODULE_RET['GETFILES'])):
self.assertEqual(snapper.changed_files(), MODULE_RET['GETFILES'].keys())
def test_undo(self):
with patch('salt.modules.snapper._get_num_interval', MagicMock(return_value=(42, 43))), \
patch('salt.modules.snapper.status', MagicMock(return_value=MODULE_RET['GETFILES'])):
cmd_ret = 'create:0 modify:1 delete:0'
with patch.dict(snapper.__salt__, {'cmd.run': MagicMock(return_value=cmd_ret)}):
module_ret = {'create': '0', 'delete': '0', 'modify': '1'}
self.assertEqual(snapper.undo(files=['/tmp/foo']), module_ret)
cmd_ret = 'create:1 modify:1 delete:0'
with patch.dict(snapper.__salt__, {'cmd.run': MagicMock(return_value=cmd_ret)}):
module_ret = {'create': '1', 'delete': '0', 'modify': '1'}
self.assertEqual(snapper.undo(files=['/tmp/foo', '/tmp/foo2']), module_ret)
cmd_ret = 'create:1 modify:1 delete:1'
with patch.dict(snapper.__salt__, {'cmd.run': MagicMock(return_value=cmd_ret)}):
module_ret = {'create': '1', 'delete': '1', 'modify': '1'}
self.assertEqual(snapper.undo(files=['/tmp/foo', '/tmp/foo2', '/tmp/foo3']), module_ret)
def test__get_jid_snapshots(self):
with patch('salt.modules.snapper.list_snapshots', MagicMock(return_value=MODULE_RET['SNAPSHOTS'])):
self.assertEqual(
snapper._get_jid_snapshots("20160607130930720112"), # pylint: disable=protected-access
(MODULE_RET['SNAPSHOTS'][0]['id'], MODULE_RET['SNAPSHOTS'][1]['id'])
)
def test_undo_jid(self):
with patch('salt.modules.snapper._get_jid_snapshots', MagicMock(return_value=(42, 43))), \
patch('salt.modules.snapper.undo', MagicMock(return_value='create:1 modify:1 delete:1')):
self.assertEqual(snapper.undo_jid(20160607130930720112), 'create:1 modify:1 delete:1')
def test_diff_text_file(self):
with patch('salt.modules.snapper._get_num_interval', MagicMock(return_value=(42, 43))), \
patch('salt.modules.snapper.snapper.MountSnapshot',
MagicMock(side_effect=["/.snapshots/55/snapshot", ""])), \
patch('salt.modules.snapper.snapper.UmountSnapshot', MagicMock(return_value="")), \
patch('os.path.isdir', MagicMock(return_value=False)), \
patch('salt.modules.snapper.changed_files', MagicMock(return_value=["/tmp/foo2"])), \
patch('salt.modules.snapper._is_text_file', MagicMock(return_value=True)), \
patch('os.path.isfile', MagicMock(side_effect=[False, True])), \
patch('salt.utils.files.fopen', mock_open(read_data=FILE_CONTENT["/tmp/foo2"]['post'])), \
patch('salt.modules.snapper.snapper.ListConfigs', MagicMock(return_value=DBUS_RET['ListConfigs'])):
if sys.version_info < (2, 7):
self.assertEqual(snapper.diff(), {"/tmp/foo2": MODULE_RET['DIFF']['/tmp/foo26']})
else:
self.assertEqual(snapper.diff(), {"/tmp/foo2": MODULE_RET['DIFF']['/tmp/foo2']})
@skipIf(sys.version_info < (2, 7), 'Python 2.7 required to compare diff properly')
def test_diff_text_files(self):
with patch('salt.modules.snapper._get_num_interval', MagicMock(return_value=(55, 0))), \
patch('salt.modules.snapper.snapper.MountSnapshot',
MagicMock(side_effect=["/.snapshots/55/snapshot", "", "/.snapshots/55/snapshot", ""])), \
patch('salt.modules.snapper.snapper.UmountSnapshot', MagicMock(return_value="")), \
patch('salt.modules.snapper.changed_files', MagicMock(return_value=["/tmp/foo", "/tmp/foo2"])), \
patch('salt.modules.snapper._is_text_file', MagicMock(return_value=True)), \
patch('os.path.isfile', MagicMock(side_effect=[True, True, False, True])), \
patch('os.path.isdir', MagicMock(return_value=False)), \
patch('salt.modules.snapper.snapper.ListConfigs', MagicMock(return_value=DBUS_RET['ListConfigs'])):
contents = {
'*/tmp/foo': [
FILE_CONTENT['/tmp/foo']['pre'],
FILE_CONTENT['/tmp/foo']['post'],
],
'*/tmp/foo2': FILE_CONTENT['/tmp/foo2']['post'],
}
with patch('salt.utils.files.fopen', mock_open(read_data=contents)):
module_ret = {
"/tmp/foo": MODULE_RET['DIFF']["/tmp/foo"],
"/tmp/foo2": MODULE_RET['DIFF']["/tmp/foo2"],
}
self.assertEqual(snapper.diff(), module_ret)
def test_diff_binary_files(self):
with patch('salt.modules.snapper._get_num_interval', MagicMock(return_value=(55, 0))), \
patch('salt.modules.snapper.snapper.MountSnapshot',
MagicMock(side_effect=["/.snapshots/55/snapshot", "", "/.snapshots/55/snapshot", ""])), \
patch('salt.modules.snapper.snapper.UmountSnapshot', MagicMock(return_value="")), \
patch('salt.modules.snapper.changed_files', MagicMock(return_value=["/tmp/foo3"])), \
patch('salt.modules.snapper._is_text_file', MagicMock(return_value=False)), \
patch('os.path.isfile', MagicMock(side_effect=[True, True])), \
patch('os.path.isdir', MagicMock(return_value=False)), \
patch('salt.modules.snapper.snapper.ListConfigs', MagicMock(return_value=DBUS_RET['ListConfigs'])), \
patch.dict(snapper.__salt__, {
'hashutil.sha256_digest': MagicMock(side_effect=[
"e61f8b762d83f3b4aeb3689564b0ffbe54fa731a69a1e208dc9440ce0f69d19b",
"f18f971f1517449208a66589085ddd3723f7f6cefb56c141e3d97ae49e1d87fa",
])
}):
with patch('salt.utils.files.fopen', mock_open(read_data='dummy binary')):
module_ret = {
"/tmp/foo3": MODULE_RET['DIFF']["/tmp/foo3"],
}
self.assertEqual(snapper.diff(), module_ret)
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