/usr/lib/python2.7/dist-packages/taskflow/tests/unit/persistence/test_memory_persistence.py is in python-taskflow 2.3.0-2.
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# Copyright (C) 2013 Rackspace Hosting All Rights Reserved.
#
# 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 contextlib
from taskflow import exceptions as exc
from taskflow.persistence import backends
from taskflow.persistence.backends import impl_memory
from taskflow import test
from taskflow.tests.unit.persistence import base
class MemoryPersistenceTest(test.TestCase, base.PersistenceTestMixin):
def setUp(self):
super(MemoryPersistenceTest, self).setUp()
self._backend = impl_memory.MemoryBackend({})
def _get_connection(self):
return self._backend.get_connection()
def tearDown(self):
conn = self._get_connection()
conn.clear_all()
self._backend = None
super(MemoryPersistenceTest, self).tearDown()
def test_memory_backend_entry_point(self):
conf = {'connection': 'memory:'}
with contextlib.closing(backends.fetch(conf)) as be:
self.assertIsInstance(be, impl_memory.MemoryBackend)
def test_memory_backend_fetch_by_name(self):
conf = {'connection': 'memory'} # note no colon
with contextlib.closing(backends.fetch(conf)) as be:
self.assertIsInstance(be, impl_memory.MemoryBackend)
class MemoryFilesystemTest(test.TestCase):
@staticmethod
def _get_item_path(fs, path):
# TODO(harlowja): is there a better way to do this??
return fs[path]
@staticmethod
def _del_item_path(fs, path):
# TODO(harlowja): is there a better way to do this??
del fs[path]
def test_set_get_ls(self):
fs = impl_memory.FakeFilesystem()
fs['/d'] = 'd'
fs['/c'] = 'c'
fs['/d/b'] = 'db'
self.assertEqual(2, len(fs.ls('/')))
self.assertEqual(1, len(fs.ls('/d')))
self.assertEqual('d', fs['/d'])
self.assertEqual('c', fs['/c'])
self.assertEqual('db', fs['/d/b'])
def test_ls_recursive(self):
fs = impl_memory.FakeFilesystem()
fs.ensure_path("/d")
fs.ensure_path("/c/d")
fs.ensure_path("/b/c/d")
fs.ensure_path("/a/b/c/d")
contents = fs.ls_r("/", absolute=False)
self.assertEqual([
'a',
'b',
'c',
'd',
'a/b',
'b/c',
'c/d',
'a/b/c',
'b/c/d',
'a/b/c/d',
], contents)
def test_ls_recursive_absolute(self):
fs = impl_memory.FakeFilesystem()
fs.ensure_path("/d")
fs.ensure_path("/c/d")
fs.ensure_path("/b/c/d")
fs.ensure_path("/a/b/c/d")
contents = fs.ls_r("/", absolute=True)
self.assertEqual([
'/a',
'/b',
'/c',
'/d',
'/a/b',
'/b/c',
'/c/d',
'/a/b/c',
'/b/c/d',
'/a/b/c/d',
], contents)
def test_ls_recursive_targeted(self):
fs = impl_memory.FakeFilesystem()
fs.ensure_path("/d")
fs.ensure_path("/c/d")
fs.ensure_path("/b/c/d")
fs.ensure_path("/a/b/c/d")
contents = fs.ls_r("/a/b", absolute=False)
self.assertEqual(['c', 'c/d'], contents)
def test_ls_targeted(self):
fs = impl_memory.FakeFilesystem()
fs.ensure_path("/d")
fs.ensure_path("/c/d")
fs.ensure_path("/b/c/d")
fs.ensure_path("/a/b/c/d")
contents = fs.ls("/a/b", absolute=False)
self.assertEqual(['c'], contents)
def test_ls_targeted_absolute(self):
fs = impl_memory.FakeFilesystem()
fs.ensure_path("/d")
fs.ensure_path("/c/d")
fs.ensure_path("/b/c/d")
fs.ensure_path("/a/b/c/d")
contents = fs.ls("/a/b", absolute=True)
self.assertEqual(['/a/b/c'], contents)
def test_ls_recursive_targeted_absolute(self):
fs = impl_memory.FakeFilesystem()
fs.ensure_path("/d")
fs.ensure_path("/c/d")
fs.ensure_path("/b/c/d")
fs.ensure_path("/a/b/c/d")
contents = fs.ls_r("/a/b", absolute=True)
self.assertEqual(['/a/b/c', '/a/b/c/d'], contents)
def test_ensure_path(self):
fs = impl_memory.FakeFilesystem()
pieces = ['a', 'b', 'c']
path = "/" + "/".join(pieces)
fs.ensure_path(path)
path = fs.root_path
for i, p in enumerate(pieces):
if i == 0:
path += p
else:
path += "/" + p
self.assertIsNone(fs[path])
def test_clear(self):
fs = impl_memory.FakeFilesystem()
paths = ['/b', '/c', '/a/b/c']
for p in paths:
fs.ensure_path(p)
for p in paths:
self.assertIsNone(self._get_item_path(fs, p))
fs.clear()
for p in paths:
self.assertRaises(exc.NotFound, self._get_item_path, fs, p)
def test_not_found(self):
fs = impl_memory.FakeFilesystem()
self.assertRaises(exc.NotFound, self._get_item_path, fs, '/c')
def test_bad_norms(self):
fs = impl_memory.FakeFilesystem()
self.assertRaises(ValueError, fs.normpath, '')
self.assertRaises(ValueError, fs.normpath, 'abc/c')
self.assertRaises(ValueError, fs.normpath, '../c')
def test_del_root_not_allowed(self):
fs = impl_memory.FakeFilesystem()
self.assertRaises(ValueError, fs.delete, "/", recursive=False)
def test_del_no_children_allowed(self):
fs = impl_memory.FakeFilesystem()
fs['/a'] = 'a'
self.assertEqual(1, len(fs.ls_r("/")))
fs.delete("/a")
self.assertEqual(0, len(fs.ls("/")))
def test_del_many_children_not_allowed(self):
fs = impl_memory.FakeFilesystem()
fs['/a'] = 'a'
fs['/a/b'] = 'b'
self.assertRaises(ValueError, fs.delete, "/", recursive=False)
def test_del_with_children_not_allowed(self):
fs = impl_memory.FakeFilesystem()
fs['/a'] = 'a'
fs['/a/b'] = 'b'
self.assertRaises(ValueError, fs.delete, "/a", recursive=False)
def test_del_many_children_allowed(self):
fs = impl_memory.FakeFilesystem()
fs['/a'] = 'a'
fs['/a/b'] = 'b'
self.assertEqual(2, len(fs.ls_r("/")))
fs.delete("/a", recursive=True)
self.assertEqual(0, len(fs.ls("/")))
def test_del_many_children_allowed_not_recursive(self):
fs = impl_memory.FakeFilesystem()
fs['/a'] = 'a'
fs['/a/b'] = 'b'
self.assertEqual(2, len(fs.ls_r("/")))
fs.delete("/a/b", recursive=False)
self.assertEqual(1, len(fs.ls("/")))
fs.delete("/a", recursive=False)
self.assertEqual(0, len(fs.ls("/")))
def test_link_loop_raises(self):
fs = impl_memory.FakeFilesystem()
fs['/b'] = 'c'
fs.symlink('/b', '/b')
self.assertRaises(ValueError, self._get_item_path, fs, '/b')
def test_ensure_linked_delete(self):
fs = impl_memory.FakeFilesystem()
fs['/b'] = 'd'
fs.symlink('/b', '/c')
self.assertEqual('d', fs['/b'])
self.assertEqual('d', fs['/c'])
del fs['/b']
self.assertRaises(exc.NotFound, self._get_item_path, fs, '/c')
self.assertRaises(exc.NotFound, self._get_item_path, fs, '/b')
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