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# Copyright 2011-2012 Canonical Ltd.
#
# This file is part of u1db.
#
# u1db is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# u1db is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with u1db. If not, see <http://www.gnu.org/licenses/>.
"""
Test infrastructure for U1DB
"""
import copy
import shutil
import socket
import tempfile
import threading
try:
import simplejson as json
except ImportError:
import json # noqa
from wsgiref import simple_server
from oauth import oauth
from pysqlcipher import dbapi2
from StringIO import StringIO
import testscenarios
from twisted.trial import unittest
from u1db import (
errors,
Document,
)
from u1db.backends import (
inmemory,
sqlite_backend,
)
from u1db.remote import (
server_state,
)
class TestCase(unittest.TestCase):
def createTempDir(self, prefix='u1db-tmp-'):
"""Create a temporary directory to do some work in.
This directory will be scheduled for cleanup when the test ends.
"""
tempdir = tempfile.mkdtemp(prefix=prefix)
self.addCleanup(shutil.rmtree, tempdir)
return tempdir
def make_document(self, doc_id, doc_rev, content, has_conflicts=False):
return self.make_document_for_test(
self, doc_id, doc_rev, content, has_conflicts)
def make_document_for_test(self, test, doc_id, doc_rev, content,
has_conflicts):
return make_document_for_test(
test, doc_id, doc_rev, content, has_conflicts)
def assertGetDoc(self, db, doc_id, doc_rev, content, has_conflicts):
"""Assert that the document in the database looks correct."""
exp_doc = self.make_document(doc_id, doc_rev, content,
has_conflicts=has_conflicts)
self.assertEqual(exp_doc, db.get_doc(doc_id))
def assertGetDocIncludeDeleted(self, db, doc_id, doc_rev, content,
has_conflicts):
"""Assert that the document in the database looks correct."""
exp_doc = self.make_document(doc_id, doc_rev, content,
has_conflicts=has_conflicts)
self.assertEqual(exp_doc, db.get_doc(doc_id, include_deleted=True))
def assertGetDocConflicts(self, db, doc_id, conflicts):
"""Assert what conflicts are stored for a given doc_id.
:param conflicts: A list of (doc_rev, content) pairs.
The first item must match the first item returned from the
database, however the rest can be returned in any order.
"""
if conflicts:
conflicts = [(rev,
(json.loads(cont) if isinstance(cont, basestring)
else cont)) for (rev, cont) in conflicts]
conflicts = conflicts[:1] + sorted(conflicts[1:])
actual = db.get_doc_conflicts(doc_id)
if actual:
actual = [
(doc.rev, (json.loads(doc.get_json())
if doc.get_json() is not None else None))
for doc in actual]
actual = actual[:1] + sorted(actual[1:])
self.assertEqual(conflicts, actual)
def multiply_scenarios(a_scenarios, b_scenarios):
"""Create the cross-product of scenarios."""
all_scenarios = []
for a_name, a_attrs in a_scenarios:
for b_name, b_attrs in b_scenarios:
name = '%s,%s' % (a_name, b_name)
attrs = dict(a_attrs)
attrs.update(b_attrs)
all_scenarios.append((name, attrs))
return all_scenarios
simple_doc = '{"key": "value"}'
nested_doc = '{"key": "value", "sub": {"doc": "underneath"}}'
def make_memory_database_for_test(test, replica_uid):
return inmemory.InMemoryDatabase(replica_uid)
def copy_memory_database_for_test(test, db):
# DO NOT COPY OR REUSE THIS CODE OUTSIDE TESTS: COPYING U1DB DATABASES IS
# THE WRONG THING TO DO, THE ONLY REASON WE DO SO HERE IS TO TEST THAT WE
# CORRECTLY DETECT IT HAPPENING SO THAT WE CAN RAISE ERRORS RATHER THAN
# CORRUPT USER DATA. USE SYNC INSTEAD, OR WE WILL SEND NINJA TO YOUR
# HOUSE.
new_db = inmemory.InMemoryDatabase(db._replica_uid)
new_db._transaction_log = db._transaction_log[:]
new_db._docs = copy.deepcopy(db._docs)
new_db._conflicts = copy.deepcopy(db._conflicts)
new_db._indexes = copy.deepcopy(db._indexes)
new_db._factory = db._factory
return new_db
def make_sqlite_partial_expanded_for_test(test, replica_uid):
db = sqlite_backend.SQLitePartialExpandDatabase(':memory:')
db._set_replica_uid(replica_uid)
return db
def copy_sqlite_partial_expanded_for_test(test, db):
# DO NOT COPY OR REUSE THIS CODE OUTSIDE TESTS: COPYING U1DB DATABASES IS
# THE WRONG THING TO DO, THE ONLY REASON WE DO SO HERE IS TO TEST THAT WE
# CORRECTLY DETECT IT HAPPENING SO THAT WE CAN RAISE ERRORS RATHER THAN
# CORRUPT USER DATA. USE SYNC INSTEAD, OR WE WILL SEND NINJA TO YOUR
# HOUSE.
new_db = sqlite_backend.SQLitePartialExpandDatabase(':memory:')
tmpfile = StringIO()
for line in db._db_handle.iterdump():
if not 'sqlite_sequence' in line: # work around bug in iterdump
tmpfile.write('%s\n' % line)
tmpfile.seek(0)
new_db._db_handle = dbapi2.connect(':memory:')
new_db._db_handle.cursor().executescript(tmpfile.read())
new_db._db_handle.commit()
new_db._set_replica_uid(db._replica_uid)
new_db._factory = db._factory
return new_db
def make_document_for_test(test, doc_id, rev, content, has_conflicts=False):
return Document(doc_id, rev, content, has_conflicts=has_conflicts)
LOCAL_DATABASES_SCENARIOS = [
('mem', {'make_database_for_test': make_memory_database_for_test,
'copy_database_for_test': copy_memory_database_for_test,
'make_document_for_test': make_document_for_test}),
('sql', {'make_database_for_test':
make_sqlite_partial_expanded_for_test,
'copy_database_for_test':
copy_sqlite_partial_expanded_for_test,
'make_document_for_test': make_document_for_test}),
]
class DatabaseBaseTests(TestCase):
accept_fixed_trans_id = False # set to True assertTransactionLog
# is happy with all trans ids = ''
scenarios = LOCAL_DATABASES_SCENARIOS
def make_database_for_test(self, replica_uid):
return make_memory_database_for_test(self, replica_uid)
def create_database(self, *args):
return self.make_database_for_test(self, *args)
def copy_database(self, db):
# DO NOT COPY OR REUSE THIS CODE OUTSIDE TESTS: COPYING U1DB DATABASES
# IS THE WRONG THING TO DO, THE ONLY REASON WE DO SO HERE IS TO TEST
# THAT WE CORRECTLY DETECT IT HAPPENING SO THAT WE CAN RAISE ERRORS
# RATHER THAN CORRUPT USER DATA. USE SYNC INSTEAD, OR WE WILL SEND
# NINJA TO YOUR HOUSE.
return self.copy_database_for_test(self, db)
def setUp(self):
super(DatabaseBaseTests, self).setUp()
self.db = self.create_database('test')
def tearDown(self):
if hasattr(self, 'db') and self.db is not None:
self.db.close()
super(DatabaseBaseTests, self).tearDown()
def assertTransactionLog(self, doc_ids, db):
"""Assert that the given docs are in the transaction log."""
log = db._get_transaction_log()
just_ids = []
seen_transactions = set()
for doc_id, transaction_id in log:
just_ids.append(doc_id)
self.assertIsNot(None, transaction_id,
"Transaction id should not be None")
if transaction_id == '' and self.accept_fixed_trans_id:
continue
self.assertNotEqual('', transaction_id,
"Transaction id should be a unique string")
self.assertTrue(transaction_id.startswith('T-'))
self.assertNotIn(transaction_id, seen_transactions)
seen_transactions.add(transaction_id)
self.assertEqual(doc_ids, just_ids)
def getLastTransId(self, db):
"""Return the transaction id for the last database update."""
return self.db._get_transaction_log()[-1][-1]
class ServerStateForTests(server_state.ServerState):
"""Used in the test suite, so we don't have to touch disk, etc."""
def __init__(self):
super(ServerStateForTests, self).__init__()
self._dbs = {}
def open_database(self, path):
try:
return self._dbs[path]
except KeyError:
raise errors.DatabaseDoesNotExist
def check_database(self, path):
# cares only about the possible exception
self.open_database(path)
def ensure_database(self, path):
try:
db = self.open_database(path)
except errors.DatabaseDoesNotExist:
db = self._create_database(path)
return db, db._replica_uid
def _copy_database(self, db):
# DO NOT COPY OR REUSE THIS CODE OUTSIDE TESTS: COPYING U1DB DATABASES
# IS THE WRONG THING TO DO, THE ONLY REASON WE DO SO HERE IS TO TEST
# THAT WE CORRECTLY DETECT IT HAPPENING SO THAT WE CAN RAISE ERRORS
# RATHER THAN CORRUPT USER DATA. USE SYNC INSTEAD, OR WE WILL SEND
# NINJA TO YOUR HOUSE.
new_db = copy_memory_database_for_test(None, db)
path = db._replica_uid
while path in self._dbs:
path += 'copy'
self._dbs[path] = new_db
return new_db
def _create_database(self, path):
db = inmemory.InMemoryDatabase(path)
self._dbs[path] = db
return db
def delete_database(self, path):
del self._dbs[path]
class ResponderForTests(object):
"""Responder for tests."""
_started = False
sent_response = False
status = None
def start_response(self, status='success', **kwargs):
self._started = True
self.status = status
self.kwargs = kwargs
def send_response(self, status='success', **kwargs):
self.start_response(status, **kwargs)
self.finish_response()
def finish_response(self):
self.sent_response = True
class TestCaseWithServer(TestCase):
@staticmethod
def server_def():
# hook point
# should return (ServerClass, "shutdown method name", "url_scheme")
class _RequestHandler(simple_server.WSGIRequestHandler):
def log_request(*args):
pass # suppress
def make_server(host_port, application):
assert application, "forgot to override make_app(_with_state)?"
srv = simple_server.WSGIServer(host_port, _RequestHandler)
# patch the value in if it's None
if getattr(application, 'base_url', 1) is None:
application.base_url = "http://%s:%s" % srv.server_address
srv.set_app(application)
return srv
return make_server, "shutdown", "http"
@staticmethod
def make_app_with_state(state):
# hook point
return None
def make_app(self):
# potential hook point
self.request_state = ServerStateForTests()
return self.make_app_with_state(self.request_state)
def setUp(self):
super(TestCaseWithServer, self).setUp()
self.server = self.server_thread = None
def tearDown(self):
if self.server is not None:
self.server.shutdown()
self.server_thread.join()
self.server.server_close()
super(TestCaseWithServer, self).tearDown()
@property
def url_scheme(self):
return self.server_def()[-1]
def startServer(self):
server_def = self.server_def()
server_class, shutdown_meth, _ = server_def
application = self.make_app()
self.server = server_class(('127.0.0.1', 0), application)
self.server_thread = threading.Thread(target=self.server.serve_forever,
kwargs=dict(poll_interval=0.01))
self.server_thread.start()
self.addCleanup(self.server_thread.join)
self.addCleanup(getattr(self.server, shutdown_meth))
def getURL(self, path=None):
host, port = self.server.server_address
if path is None:
path = ''
return '%s://%s:%s/%s' % (self.url_scheme, host, port, path)
def socket_pair():
"""Return a pair of TCP sockets connected to each other.
Unlike socket.socketpair, this should work on Windows.
"""
sock_pair = getattr(socket, 'socket_pair', None)
if sock_pair:
return sock_pair(socket.AF_INET, socket.SOCK_STREAM)
listen_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
listen_sock.bind(('127.0.0.1', 0))
listen_sock.listen(1)
client_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_sock.connect(listen_sock.getsockname())
server_sock, addr = listen_sock.accept()
listen_sock.close()
return server_sock, client_sock
# OAuth related testing
consumer1 = oauth.OAuthConsumer('K1', 'S1')
token1 = oauth.OAuthToken('kkkk1', 'XYZ')
consumer2 = oauth.OAuthConsumer('K2', 'S2')
token2 = oauth.OAuthToken('kkkk2', 'ZYX')
token3 = oauth.OAuthToken('kkkk3', 'ZYX')
class TestingOAuthDataStore(oauth.OAuthDataStore):
"""In memory predefined OAuthDataStore for testing."""
consumers = {
consumer1.key: consumer1,
consumer2.key: consumer2,
}
tokens = {
token1.key: token1,
token2.key: token2
}
def lookup_consumer(self, key):
return self.consumers.get(key)
def lookup_token(self, token_type, token_token):
return self.tokens.get(token_token)
def lookup_nonce(self, oauth_consumer, oauth_token, nonce):
return None
testingOAuthStore = TestingOAuthDataStore()
sign_meth_HMAC_SHA1 = oauth.OAuthSignatureMethod_HMAC_SHA1()
sign_meth_PLAINTEXT = oauth.OAuthSignatureMethod_PLAINTEXT()
def load_with_scenarios(loader, standard_tests, pattern):
"""Load the tests in a given module.
This just applies testscenarios.generate_scenarios to all the tests that
are present. We do it at load time rather than at run time, because it
plays nicer with various tools.
"""
suite = loader.suiteClass()
suite.addTests(testscenarios.generate_scenarios(standard_tests))
return suite
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