openstack/swift
Code Issues Proposed changes
swift/test/unit/common/test_constraints.py
Alistair Coles fa89064933 Per-policy DiskFile classes 
Adds specific disk file classes for EC policy types.

The new ECDiskFile and ECDiskFileWriter classes are used by the
ECDiskFileManager.

ECDiskFileManager is registered with the DiskFileRouter for use with
EC_POLICY type policies.

Refactors diskfile tests into BaseDiskFileMixin and BaseDiskFileManagerMixin
classes which are then extended in subclasses for the legacy
replication-type DiskFile* and ECDiskFile* classes.

Refactor to prefer use of a policy instance reference over a policy_index
int to refer to a policy.

Add additional verification to DiskFileManager.get_dev_path to validate the
device root with common.constraints.check_dir, even when mount_check is
disabled for use in on a virtual swift-all-in-one.

Co-Authored-By: Thiago da Silva <thiago@redhat.com>
Co-Authored-By: John Dickinson <me@not.mn>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Tushar Gohad <tushar.gohad@intel.com>
Co-Authored-By: Paul Luse <paul.e.luse@intel.com>
Co-Authored-By: Samuel Merritt <sam@swiftstack.com>
Co-Authored-By: Christian Schwede <christian.schwede@enovance.com>
Co-Authored-By: Yuan Zhou <yuan.zhou@intel.com>
Change-Id: I22f915160dc67a9e18f4738c1ddf068344e8ad5d
2015-04-14 00:52:16 -07:00

597 lines
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# Copyright (c) 2010-2012 OpenStack Foundation
#
# 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 unittest
import mock
import tempfile
import time
from test import safe_repr
from test.unit import MockTrue
from swift.common.swob import HTTPBadRequest, Request, HTTPException
from swift.common.http import HTTP_REQUEST_ENTITY_TOO_LARGE, \
HTTP_BAD_REQUEST, HTTP_LENGTH_REQUIRED, HTTP_NOT_IMPLEMENTED
from swift.common import constraints, utils
class TestConstraints(unittest.TestCase):
def assertIn(self, member, container, msg=None):
"""Copied from 2.7"""
if member not in container:
standardMsg = '%s not found in %s' % (safe_repr(member),
safe_repr(container))
self.fail(self._formatMessage(msg, standardMsg))
def test_check_metadata_empty(self):
headers = {}
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), None)
def test_check_metadata_good(self):
headers = {'X-Object-Meta-Name': 'Value'}
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), None)
def test_check_metadata_empty_name(self):
headers = {'X-Object-Meta-': 'Value'}
self.assert_(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), HTTPBadRequest)
def test_check_metadata_name_length(self):
name = 'a' * constraints.MAX_META_NAME_LENGTH
headers = {'X-Object-Meta-%s' % name: 'v'}
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), None)
name = 'a' * (constraints.MAX_META_NAME_LENGTH + 1)
headers = {'X-Object-Meta-%s' % name: 'v'}
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object').status_int, HTTP_BAD_REQUEST)
self.assertIn(
('X-Object-Meta-%s' % name).lower(),
constraints.check_metadata(Request.blank(
'/', headers=headers), 'object').body.lower())
def test_check_metadata_value_length(self):
value = 'a' * constraints.MAX_META_VALUE_LENGTH
headers = {'X-Object-Meta-Name': value}
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), None)
value = 'a' * (constraints.MAX_META_VALUE_LENGTH + 1)
headers = {'X-Object-Meta-Name': value}
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object').status_int, HTTP_BAD_REQUEST)
self.assertIn(
'x-object-meta-name',
constraints.check_metadata(Request.blank(
'/', headers=headers),
'object').body.lower())
self.assertIn(
str(constraints.MAX_META_VALUE_LENGTH),
constraints.check_metadata(Request.blank(
'/', headers=headers),
'object').body)
def test_check_metadata_count(self):
headers = {}
for x in xrange(constraints.MAX_META_COUNT):
headers['X-Object-Meta-%d' % x] = 'v'
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), None)
headers['X-Object-Meta-Too-Many'] = 'v'
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object').status_int, HTTP_BAD_REQUEST)
def test_check_metadata_size(self):
headers = {}
size = 0
chunk = constraints.MAX_META_NAME_LENGTH + \
constraints.MAX_META_VALUE_LENGTH
x = 0
while size + chunk < constraints.MAX_META_OVERALL_SIZE:
headers['X-Object-Meta-%04d%s' %
(x, 'a' * (constraints.MAX_META_NAME_LENGTH - 4))] = \
'v' * constraints.MAX_META_VALUE_LENGTH
size += chunk
x += 1
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object'), None)
# add two more headers in case adding just one falls exactly on the
# limit (eg one header adds 1024 and the limit is 2048)
headers['X-Object-Meta-%04d%s' %
(x, 'a' * (constraints.MAX_META_NAME_LENGTH - 4))] = \
'v' * constraints.MAX_META_VALUE_LENGTH
headers['X-Object-Meta-%04d%s' %
(x + 1, 'a' * (constraints.MAX_META_NAME_LENGTH - 4))] = \
'v' * constraints.MAX_META_VALUE_LENGTH
self.assertEquals(constraints.check_metadata(Request.blank(
'/', headers=headers), 'object').status_int, HTTP_BAD_REQUEST)
def test_check_object_creation_content_length(self):
headers = {'Content-Length': str(constraints.MAX_FILE_SIZE),
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name'), None)
headers = {'Content-Length': str(constraints.MAX_FILE_SIZE + 1),
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(
Request.blank('/', headers=headers), 'object_name').status_int,
HTTP_REQUEST_ENTITY_TOO_LARGE)
headers = {'Transfer-Encoding': 'chunked',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name'), None)
headers = {'Transfer-Encoding': 'gzip',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name').status_int,
HTTP_BAD_REQUEST)
headers = {'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(
Request.blank('/', headers=headers), 'object_name').status_int,
HTTP_LENGTH_REQUIRED)
headers = {'Content-Length': 'abc',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name').status_int,
HTTP_BAD_REQUEST)
headers = {'Transfer-Encoding': 'gzip,chunked',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name').status_int,
HTTP_NOT_IMPLEMENTED)
def test_check_object_creation_copy(self):
headers = {'Content-Length': '0',
'X-Copy-From': 'c/o2',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name'), None)
headers = {'Content-Length': '1',
'X-Copy-From': 'c/o2',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name').status_int,
HTTP_BAD_REQUEST)
headers = {'Transfer-Encoding': 'chunked',
'X-Copy-From': 'c/o2',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name'), None)
# a content-length header is always required
headers = {'X-Copy-From': 'c/o2',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name').status_int,
HTTP_LENGTH_REQUIRED)
def test_check_object_creation_name_length(self):
headers = {'Transfer-Encoding': 'chunked',
'Content-Type': 'text/plain'}
name = 'o' * constraints.MAX_OBJECT_NAME_LENGTH
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), name), None)
name = 'o' * (constraints.MAX_OBJECT_NAME_LENGTH + 1)
self.assertEquals(constraints.check_object_creation(
Request.blank('/', headers=headers), name).status_int,
HTTP_BAD_REQUEST)
def test_check_object_creation_content_type(self):
headers = {'Transfer-Encoding': 'chunked',
'Content-Type': 'text/plain'}
self.assertEquals(constraints.check_object_creation(Request.blank(
'/', headers=headers), 'object_name'), None)
headers = {'Transfer-Encoding': 'chunked'}
self.assertEquals(constraints.check_object_creation(
Request.blank('/', headers=headers), 'object_name').status_int,
HTTP_BAD_REQUEST)
def test_check_object_creation_bad_content_type(self):
headers = {'Transfer-Encoding': 'chunked',
'Content-Type': '\xff\xff'}
resp = constraints.check_object_creation(
Request.blank('/', headers=headers), 'object_name')
self.assertEquals(resp.status_int, HTTP_BAD_REQUEST)
self.assert_('Content-Type' in resp.body)
def test_check_object_creation_bad_delete_headers(self):
headers = {'Transfer-Encoding': 'chunked',
'Content-Type': 'text/plain',
'X-Delete-After': 'abc'}
resp = constraints.check_object_creation(
Request.blank('/', headers=headers), 'object_name')
self.assertEquals(resp.status_int, HTTP_BAD_REQUEST)
self.assert_('Non-integer X-Delete-After' in resp.body)
t = str(int(time.time() - 60))
headers = {'Transfer-Encoding': 'chunked',
'Content-Type': 'text/plain',
'X-Delete-At': t}
resp = constraints.check_object_creation(
Request.blank('/', headers=headers), 'object_name')
self.assertEquals(resp.status_int, HTTP_BAD_REQUEST)
self.assert_('X-Delete-At in past' in resp.body)
def test_check_delete_headers(self):
# X-Delete-After
headers = {'X-Delete-After': '60'}
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
self.assertTrue(isinstance(resp, Request))
self.assertTrue('x-delete-at' in resp.headers)
headers = {'X-Delete-After': 'abc'}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('Non-integer X-Delete-After' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
headers = {'X-Delete-After': '60.1'}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('Non-integer X-Delete-After' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
headers = {'X-Delete-After': '-1'}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('X-Delete-After in past' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
# X-Delete-At
t = str(int(time.time() + 100))
headers = {'X-Delete-At': t}
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
self.assertTrue(isinstance(resp, Request))
self.assertTrue('x-delete-at' in resp.headers)
self.assertEquals(resp.headers.get('X-Delete-At'), t)
headers = {'X-Delete-At': 'abc'}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('Non-integer X-Delete-At' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
t = str(int(time.time() + 100)) + '.1'
headers = {'X-Delete-At': t}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('Non-integer X-Delete-At' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
t = str(int(time.time()))
headers = {'X-Delete-At': t}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('X-Delete-At in past' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
t = str(int(time.time() - 1))
headers = {'X-Delete-At': t}
try:
resp = constraints.check_delete_headers(
Request.blank('/', headers=headers))
except HTTPException as e:
self.assertEquals(e.status_int, HTTP_BAD_REQUEST)
self.assertTrue('X-Delete-At in past' in e.body)
else:
self.fail("Should have failed with HTTPBadRequest")
def test_check_delete_headers_sets_delete_at(self):
t = time.time() + 1000
# check delete-at is passed through
headers = {'Content-Length': '0',
'Content-Type': 'text/plain',
'X-Delete-At': str(int(t))}
req = Request.blank('/', headers=headers)
constraints.check_delete_headers(req)
self.assertTrue('X-Delete-At' in req.headers)
self.assertEqual(req.headers['X-Delete-At'], str(int(t)))
# check delete-after is converted to delete-at
headers = {'Content-Length': '0',
'Content-Type': 'text/plain',
'X-Delete-After': '42'}
req = Request.blank('/', headers=headers)
with mock.patch('time.time', lambda: t):
constraints.check_delete_headers(req)
self.assertTrue('X-Delete-At' in req.headers)
expected = str(int(t) + 42)
self.assertEqual(req.headers['X-Delete-At'], expected)
# check delete-after takes precedence over delete-at
headers = {'Content-Length': '0',
'Content-Type': 'text/plain',
'X-Delete-After': '42',
'X-Delete-At': str(int(t) + 40)}
req = Request.blank('/', headers=headers)
with mock.patch('time.time', lambda: t):
constraints.check_delete_headers(req)
self.assertTrue('X-Delete-At' in req.headers)
self.assertEqual(req.headers['X-Delete-At'], expected)
headers = {'Content-Length': '0',
'Content-Type': 'text/plain',
'X-Delete-After': '42',
'X-Delete-At': str(int(t) + 44)}
req = Request.blank('/', headers=headers)
with mock.patch('time.time', lambda: t):
constraints.check_delete_headers(req)
self.assertTrue('X-Delete-At' in req.headers)
self.assertEqual(req.headers['X-Delete-At'], expected)
def test_check_dir(self):
self.assertFalse(constraints.check_dir('', ''))
with mock.patch("os.path.isdir", MockTrue()):
self.assertTrue(constraints.check_dir('/srv', 'foo/bar'))
def test_check_mount(self):
self.assertFalse(constraints.check_mount('', ''))
with mock.patch("swift.common.utils.ismount", MockTrue()):
self.assertTrue(constraints.check_mount('/srv', '1'))
self.assertTrue(constraints.check_mount('/srv', 'foo-bar'))
self.assertTrue(constraints.check_mount(
'/srv', '003ed03c-242a-4b2f-bee9-395f801d1699'))
self.assertFalse(constraints.check_mount('/srv', 'foo bar'))
self.assertFalse(constraints.check_mount('/srv', 'foo/bar'))
self.assertFalse(constraints.check_mount('/srv', 'foo?bar'))
def test_check_float(self):
self.assertFalse(constraints.check_float(''))
self.assertTrue(constraints.check_float('0'))
def test_valid_timestamp(self):
self.assertRaises(HTTPException,
constraints.valid_timestamp,
Request.blank('/'))
self.assertRaises(HTTPException,
constraints.valid_timestamp,
Request.blank('/', headers={
'X-Timestamp': 'asdf'}))
timestamp = utils.Timestamp(time.time())
req = Request.blank('/', headers={'X-Timestamp': timestamp.internal})
self.assertEqual(timestamp, constraints.valid_timestamp(req))
req = Request.blank('/', headers={'X-Timestamp': timestamp.normal})
self.assertEqual(timestamp, constraints.valid_timestamp(req))
def test_check_utf8(self):
unicode_sample = u'\uc77c\uc601'
valid_utf8_str = unicode_sample.encode('utf-8')
invalid_utf8_str = unicode_sample.encode('utf-8')[::-1]
unicode_with_null = u'abc\u0000def'
utf8_with_null = unicode_with_null.encode('utf-8')
for false_argument in [None,
'',
invalid_utf8_str,
unicode_with_null,
utf8_with_null]:
self.assertFalse(constraints.check_utf8(false_argument))
for true_argument in ['this is ascii and utf-8, too',
unicode_sample,
valid_utf8_str]:
self.assertTrue(constraints.check_utf8(true_argument))
def test_check_utf8_non_canonical(self):
self.assertFalse(constraints.check_utf8('\xed\xa0\xbc\xed\xbc\xb8'))
self.assertFalse(constraints.check_utf8('\xed\xa0\xbd\xed\xb9\x88'))
def test_check_utf8_lone_surrogates(self):
self.assertFalse(constraints.check_utf8('\xed\xa0\xbc'))
self.assertFalse(constraints.check_utf8('\xed\xb9\x88'))
def test_validate_bad_meta(self):
req = Request.blank(
'/v/a/c/o',
headers={'x-object-meta-hello':
'ab' * constraints.MAX_HEADER_SIZE})
self.assertEquals(constraints.check_metadata(req, 'object').status_int,
HTTP_BAD_REQUEST)
self.assertIn('x-object-meta-hello', constraints.check_metadata(req,
'object').body.lower())
def test_validate_constraints(self):
c = constraints
self.assertTrue(c.MAX_META_OVERALL_SIZE > c.MAX_META_NAME_LENGTH)
self.assertTrue(c.MAX_META_OVERALL_SIZE > c.MAX_META_VALUE_LENGTH)
self.assertTrue(c.MAX_HEADER_SIZE > c.MAX_META_NAME_LENGTH)
self.assertTrue(c.MAX_HEADER_SIZE > c.MAX_META_VALUE_LENGTH)
def test_validate_copy_from(self):
req = Request.blank(
'/v/a/c/o',
headers={'x-copy-from': 'c/o2'})
src_cont, src_obj = constraints.check_copy_from_header(req)
self.assertEqual(src_cont, 'c')
self.assertEqual(src_obj, 'o2')
req = Request.blank(
'/v/a/c/o',
headers={'x-copy-from': 'c/subdir/o2'})
src_cont, src_obj = constraints.check_copy_from_header(req)
self.assertEqual(src_cont, 'c')
self.assertEqual(src_obj, 'subdir/o2')
req = Request.blank(
'/v/a/c/o',
headers={'x-copy-from': '/c/o2'})
src_cont, src_obj = constraints.check_copy_from_header(req)
self.assertEqual(src_cont, 'c')
self.assertEqual(src_obj, 'o2')
def test_validate_bad_copy_from(self):
req = Request.blank(
'/v/a/c/o',
headers={'x-copy-from': 'bad_object'})
self.assertRaises(HTTPException,
constraints.check_copy_from_header, req)
def test_validate_destination(self):
req = Request.blank(
'/v/a/c/o',
headers={'destination': 'c/o2'})
src_cont, src_obj = constraints.check_destination_header(req)
self.assertEqual(src_cont, 'c')
self.assertEqual(src_obj, 'o2')
req = Request.blank(
'/v/a/c/o',
headers={'destination': 'c/subdir/o2'})
src_cont, src_obj = constraints.check_destination_header(req)
self.assertEqual(src_cont, 'c')
self.assertEqual(src_obj, 'subdir/o2')
req = Request.blank(
'/v/a/c/o',
headers={'destination': '/c/o2'})
src_cont, src_obj = constraints.check_destination_header(req)
self.assertEqual(src_cont, 'c')
self.assertEqual(src_obj, 'o2')
def test_validate_bad_destination(self):
req = Request.blank(
'/v/a/c/o',
headers={'destination': 'bad_object'})
self.assertRaises(HTTPException,
constraints.check_destination_header, req)
def test_check_account_format(self):
req = Request.blank(
'/v/a/c/o',
headers={'X-Copy-From-Account': 'account/with/slashes'})
self.assertRaises(HTTPException,
constraints.check_account_format,
req, req.headers['X-Copy-From-Account'])
req = Request.blank(
'/v/a/c/o',
headers={'X-Copy-From-Account': ''})
self.assertRaises(HTTPException,
constraints.check_account_format,
req, req.headers['X-Copy-From-Account'])
class TestConstraintsConfig(unittest.TestCase):
def test_default_constraints(self):
for key in constraints.DEFAULT_CONSTRAINTS:
# if there is local over-rides in swift.conf we just continue on
if key in constraints.OVERRIDE_CONSTRAINTS:
continue
# module level attrs (that aren't in OVERRIDE) should have the
# same value as the DEFAULT map
module_level_value = getattr(constraints, key.upper())
self.assertEquals(constraints.DEFAULT_CONSTRAINTS[key],
module_level_value)
def test_effective_constraints(self):
for key in constraints.DEFAULT_CONSTRAINTS:
# module level attrs should always mirror the same value as the
# EFFECTIVE map
module_level_value = getattr(constraints, key.upper())
self.assertEquals(constraints.EFFECTIVE_CONSTRAINTS[key],
module_level_value)
# if there are local over-rides in swift.conf those should be
# reflected in the EFFECTIVE, otherwise we expect the DEFAULTs
self.assertEquals(constraints.EFFECTIVE_CONSTRAINTS[key],
constraints.OVERRIDE_CONSTRAINTS.get(
key, constraints.DEFAULT_CONSTRAINTS[key]))
def test_override_constraints(self):
try:
with tempfile.NamedTemporaryFile() as f:
f.write('[swift-constraints]\n')
# set everything to 1
for key in constraints.DEFAULT_CONSTRAINTS:
f.write('%s = 1\n' % key)
f.flush()
with mock.patch.object(utils, 'SWIFT_CONF_FILE', f.name):
constraints.reload_constraints()
for key in constraints.DEFAULT_CONSTRAINTS:
# module level attrs should all be 1
module_level_value = getattr(constraints, key.upper())
self.assertEquals(module_level_value, 1)
# all keys should be in OVERRIDE
self.assertEquals(constraints.OVERRIDE_CONSTRAINTS[key],
module_level_value)
# module level attrs should always mirror the same value as
# the EFFECTIVE map
self.assertEquals(constraints.EFFECTIVE_CONSTRAINTS[key],
module_level_value)
finally:
constraints.reload_constraints()
def test_reload_reset(self):
try:
with tempfile.NamedTemporaryFile() as f:
f.write('[swift-constraints]\n')
# set everything to 1
for key in constraints.DEFAULT_CONSTRAINTS:
f.write('%s = 1\n' % key)
f.flush()
with mock.patch.object(utils, 'SWIFT_CONF_FILE', f.name):
constraints.reload_constraints()
self.assertTrue(constraints.SWIFT_CONSTRAINTS_LOADED)
self.assertEquals(sorted(constraints.DEFAULT_CONSTRAINTS.keys()),
sorted(constraints.OVERRIDE_CONSTRAINTS.keys()))
# file is now deleted...
with mock.patch.object(utils, 'SWIFT_CONF_FILE', f.name):
constraints.reload_constraints()
# no constraints have been loaded from non-existent swift.conf
self.assertFalse(constraints.SWIFT_CONSTRAINTS_LOADED)
# no constraints are in OVERRIDE
self.assertEquals([], constraints.OVERRIDE_CONSTRAINTS.keys())
# the EFFECTIVE constraints mirror DEFAULT
self.assertEquals(constraints.EFFECTIVE_CONSTRAINTS,
constraints.DEFAULT_CONSTRAINTS)
finally:
constraints.reload_constraints()
if __name__ == '__main__':
unittest.main()
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