def test_replication_link(self, _input, expected, mock_circlecore):
schema = Schema.create(display_name='Schema',
properties='x:int,y:float')
module = Module.create(display_name='Module')
box = MessageBox(uuid=generate_uuid(model=MessageBox),
schema_uuid=schema.uuid,
module_uuid=module.uuid,
display_name='Box')
with MetaDataSession.begin():
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(box)
replication_link = ReplicationLink.create(message_box_uuids=[box.uuid],
**_input)
with MetaDataSession.begin():
MetaDataSession.add(replication_link)
replication_link = ReplicationLink.query.get(replication_link.uuid)
assert isinstance(replication_link, ReplicationLink)
assert replication_link.display_name == expected['display_name']
assert replication_link.memo == expected['memo']
def test_rest(self):
"""登録されているModuleからのPOSTは404"""
# make dummy environ
with MetaDataSession.begin():
user = User.create(account='tester', password='******')
user.renew_token()
schema = Schema.create(display_name='Schema', properties='x:int,y:float')
module = Module.create(display_name='Module')
mbox = MessageBox(
uuid='4ffab839-cf56-478a-8614-6003a5980856', schema_uuid=schema.uuid, module_uuid=module.uuid
)
MetaDataSession.add(user)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
response = self.fetch(
self.get_url('/modules/{}/{}'.format(module.uuid, mbox.uuid)),
method='POST',
body=json.dumps({
'x': 1,
'y': 2.5
}),
headers={
'Content-Type': 'application/json',
'Authorization': 'Bearer {token}'.format(token=user.encoded_token),
}
)
self.assertEqual(response.code, 200)
self.datareceiver.receive_new_message.assert_called_once_with(str(mbox.uuid), {'x': 1, 'y': 2.5})
async def test_post_date(mysql, mock_circlecore):
mbox_id = uuid.uuid4()
with MetaDataSession.begin():
schema = Schema.create(display_name='Schema',
properties='date:datetime,id1:float')
module = Module.create(display_name='Module')
mbox = MessageBox(uuid=mbox_id,
schema_uuid=schema.uuid,
module_uuid=module.uuid)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
envdir = mock_circlecore[1]
database = Database(mysql.url, time_db_dir=envdir, log_dir=envdir)
journal_writer = database.make_writer()
queued_writer = journal_writer.child_writer
run_loop = asyncio.ensure_future(journal_writer.run())
# post
message = ModuleMessage(mbox.uuid, 123456.789, 0, {
'date': '2017-09-01T24:00:00Z',
'id1': 3.14
})
await queued_writer.store(mbox, message)
await queued_writer.flush()
# close database
await journal_writer.close()
await run_loop
with database._engine.begin() as connection:
table = database.find_table_for_message_box(mbox)
rows = connection.execute(select([table])).fetchall()
assert len(rows) == 0
def test_message_box(self, _input, expected, mock_circlecore):
schema = Schema.create(display_name='Schema',
properties='x:int,y:float')
module = Module.create(display_name='Module')
box = MessageBox(uuid=generate_uuid(model=MessageBox),
schema_uuid=schema.uuid,
module_uuid=module.uuid,
**_input)
with MetaDataSession.begin():
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(box)
box = MessageBox.query.get(box.uuid)
assert isinstance(box, MessageBox)
assert box.display_name == expected['display_name']
assert box.memo == expected['memo']
assert isinstance(hash(box), int)
assert isinstance(box.cc_uuid, uuid.UUID)
jsonobj = box.to_json(with_schema=True, with_module=True)
assert str(box.uuid) == jsonobj['uuid']
assert box.display_name == jsonobj['displayName']
assert box.memo == jsonobj['memo']
assert str(box.module_uuid) == jsonobj['moduleUuid']
assert str(box.schema_uuid) == jsonobj['schemaUuid']
assert schema.display_name == jsonobj['schema']['displayName']
assert module.display_name == jsonobj['module']['displayName']
def test_moge(self):
"""API認証"""
with MetaDataSession.begin():
user = User.create(account='tester', password='******')
user.renew_token()
schema = Schema.create(display_name='Schema',
properties='x:int,y:float,data:blob')
module = Module.create(display_name='Module')
mbox = MessageBox(uuid='4ffab839-cf56-478a-8614-6003a5980857',
schema_uuid=schema.uuid,
module_uuid=module.uuid)
MetaDataSession.add(user)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
data_api_endpoint = self.get_url('/api/modules/{}/{}/data'.format(
module.uuid, mbox.uuid))
# 認証がいるよ
response = self.fetch(data_api_endpoint)
assert response.code == 403
# 認証がいるよ
response = self.fetch(
data_api_endpoint,
headers={'Authorization': 'Bearer {}'.format(user.encoded_token)})
assert response.code == 200
async def on_master_migrate(self, message):
assert self.state == ReplicationState.MIGRATING
with MetaDataSession.begin():
# save master info
data = message['masterInfo']
try:
obj = CcInfo.query.filter_by(uuid=data['uuid']).one()
except NoResultFound:
obj = CcInfo(uuid=data['uuid'], myself=False)
obj.update_from_json(data)
obj.replication_master_id = self.master.id
MetaDataSession.add(obj)
master_info = obj
self.master.master_uuid = master_info.uuid
# migrate schemas
for schema_uuid, data in message['schemas'].items():
try:
obj = Schema.query.filter_by(uuid=data['uuid']).one()
except NoResultFound:
obj = Schema(uuid=data['uuid'])
obj.update_from_json(data)
obj.cc_uuid = master_info.uuid
MetaDataSession.add(obj)
# migrate modules
for module_uuid, data in message['modules'].items():
try:
obj = Module.query.filter_by(uuid=data['uuid']).one()
except NoResultFound:
obj = Module(uuid=data['uuid'])
obj.update_from_json(data)
obj.cc_uuid = master_info.uuid
obj.replication_master_id = self.master.id
MetaDataSession.add(obj)
# migrate boxes
self.target_boxes = {}
for box_uuid, data in message['messageBoxes'].items():
try:
obj = MessageBox.query.filter_by(uuid=data['uuid']).one()
if obj.schema_uuid != uuid.UUID(data['schemaUuid']):
raise DataConfilictedError('schemaUuid not match')
if obj.module_uuid != uuid.UUID(data['moduleUuid']):
raise DataConfilictedError('moduleUuid not match')
except NoResultFound:
obj = MessageBox(
uuid=data['uuid'],
schema_uuid=data['schemaUuid'],
module_uuid=data['moduleUuid'],
)
obj.update_from_json(data)
MetaDataSession.add(obj)
self.target_boxes[obj.uuid] = obj
async def test_store_blob(mysql, mock_circlecore):
envdir = mock_circlecore[1]
with MetaDataSession.begin():
ccinfo = CcInfo.query.filter_by(myself=True).one()
module = Module.create()
schema = Schema.create(display_name='Schema',
properties='x:int,y:float,data:blob')
box = MessageBox(uuid=generate_uuid(model=MessageBox),
schema=schema,
module=module,
display_name='Box')
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(box)
database = Database(mysql.url, time_db_dir=envdir, log_dir=envdir)
connection = database._engine.connect()
with database._engine.begin() as connection:
database.store_message(
box,
ModuleMessage(
box.uuid,
'1545895047.000',
0,
{
'x':
0,
'y':
3.14,
'data':
BlobMetadata(ccinfo.uuid, 'text/plain',
'deadbeafdeadbeafdeadbeafdeadbeaf')
},
),
connection=connection)
with database._engine.begin() as connection:
table = database.find_table_for_message_box(box)
rows = connection.execute(select([table.c.data])).fetchall()
print(rows)
assert len(rows) == 1
expected = '{{"$data": "deadbeafdeadbeafdeadbeafdeadbeaf", "$source": "{source}", "$type": "text/plain"}}' \
.format(
source=str(ccinfo.uuid)
)
assert rows[0][0] == expected
def test_module(self, _input, expected, mock_circlecore):
module = Module.create()
schema = Schema.create(display_name='Schema', properties='x:int,y:float')
box = MessageBox(
uuid=generate_uuid(model=MessageBox), schema_uuid=schema.uuid, module_uuid=module.uuid, display_name='Box'
)
_input['messageBoxes'] = [dict(schema=schema.uuid, displayName='Box2', memo='memo')]
module.update_from_json(_input, with_boxes=True)
with MetaDataSession.begin():
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(box)
module = Module.query.get(module.uuid)
assert isinstance(module, Module)
assert module.display_name == expected['displayName']
assert isinstance(module.tags, list)
assert len(module.tags) == len(expected['tags'])
for tag, exp_tag in zip(module.tags, expected['tags']):
assert isinstance(tag, str)
assert tag == exp_tag
assert isinstance(module.attributes, ModuleAttributes)
assert len(module.attributes) == len(expected['attributes'])
for attr, exp_attr in zip(module.attributes, expected['attributes']):
assert isinstance(attr, ModuleAttribute)
assert attr.name == exp_attr[0]
assert attr.value == exp_attr[1]
assert module.memo == expected['memo']
assert isinstance(hash(module), int)
jsonobj = module.to_json(with_boxes=True, with_schema=True, with_cc_info=True)
assert str(module.uuid) == jsonobj['uuid']
assert str(module.cc_uuid) == jsonobj['ccUuid']
assert module.display_name == jsonobj['displayName']
for tag, json_tag in zip(module.tags, jsonobj['tags']):
assert tag == json_tag
for attr, json_attr in zip(module.attributes, jsonobj['attributes']):
assert attr.name == json_attr['name']
assert attr.value == json_attr['value']
assert module.memo == jsonobj['memo']
assert len(jsonobj['messageBoxes']) == 2
assert jsonobj['ccInfo']
assert jsonobj['isReplication'] is False
async def test_datareceiver_store_blob(mock_circlecore, mysql, monkeypatch):
metadata_db_engine, tmp_dir = mock_circlecore
writer_mock = MagicMock()
make_writer_mock = Mock(name='make_writer', return_value=writer_mock)
async def dummy_store(*args, **kwargs):
return DEFAULT
writer_mock.store.side_effect = dummy_store
monkeypatch.setattr(Database, 'make_writer', make_writer_mock)
# make test schema/mbox
with MetaDataSession.begin():
schema = Schema.create(display_name='Schema', properties='x:int,y:float,data:blob')
module = Module.create(display_name='Module')
mbox = MessageBox(uuid=generate_uuid(model=MessageBox), schema_uuid=schema.uuid, module_uuid=module.uuid)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
core_mock = MagicMock()
worker = DataReceiverWorker(
core_mock,
'worker_key',
db_url=mysql.url,
time_db_dir=tmp_dir,
log_dir=tmp_dir,
cycle_time=10,
cycle_count=10,
)
datahash = (
'2b7e36b16f8a849ef312f9ef5ff9b3f4281a8681d0657150899f1113a0eecfdb'
'b4491da763159055b55e122e85281415b11897d268e124f9ef2b40457a63a465'
)
blobobj = StoredBlob(None, 'text/plain', datahash)
await worker.receive_new_message(mbox.uuid, {'x': 1, 'y': 2.0, 'data': blobobj})
publish_mock = core_mock.hub.publish
publish_mock.assert_called_once()
message = publish_mock.call_args[0][1]
assert message.payload['data'].content_type == 'text/plain'
assert message.payload['data'].datahash == datahash
def dummy_mbox():
print(" setup before function")
with mock_circlecore_context():
mbox_id = uuid.uuid4()
with MetaDataSession.begin():
schema = Schema.create(display_name='Schema',
properties='x:int,y:float')
module = Module.create(display_name='Module')
mbox = MessageBox(uuid=mbox_id,
schema_uuid=schema.uuid,
module_uuid=module.uuid)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
yield (schema, module, mbox)
def _post_modules() -> 'Response':
"""Moduleを作成する.
:return: 作成したModuleの情報
:rtype: Response
"""
try:
with MetaDataSession.begin():
module = Module.create()
module.update_from_json(request.json, with_boxes=True)
MetaDataSession.add(module)
except KeyError:
raise
return respond_failure('key error', _status=400)
return respond_success(module=module.to_json(with_boxes=True, with_schema=True))
def test_websocket_auth_failed(self):
"""Websocketにも認証がいる"""
# make dummy environ
with MetaDataSession.begin():
schema = Schema.create(display_name='Schema', properties='x:int,y:float')
module = Module.create(display_name='Module')
mbox = MessageBox(
uuid='4ffab839-cf56-478a-8614-6003a5980855', schema_uuid=schema.uuid, module_uuid=module.uuid
)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
with self.assertRaises(httpclient.HTTPClientError):
dummy_module = yield websocket_connect(self.get_url('/modules/{}/{}'.format(module.uuid, mbox.uuid)))
dummy_module.write_message(json.dumps({'x': 1, 'y': 2}))
yield sleep(1)
self.datareceiver.receive_new_message.assert_not_called()
def test_schema(self, _input, expected, mock_circlecore):
schema = Schema.create()
schema.update_from_json(_input)
module = Module.create(display_name='Module')
box = MessageBox(uuid=generate_uuid(model=MessageBox),
schema_uuid=schema.uuid,
module_uuid=module.uuid,
display_name='Box')
with MetaDataSession.begin():
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(box)
schema = Schema.query.get(schema.uuid)
assert isinstance(schema, Schema)
assert schema.display_name == expected['displayName']
assert schema.memo == expected['memo']
assert isinstance(schema.properties, SchemaProperties)
assert len(schema.properties) == len(expected['properties'])
for prop, exp_prop in zip(schema.properties, expected['properties']):
assert isinstance(prop, SchemaProperty)
assert prop.name == exp_prop[0]
assert prop.type == exp_prop[1]
assert isinstance(hash(schema), int)
jsonobj = schema.to_json(with_modules=True)
assert str(schema.uuid) == jsonobj['uuid']
assert str(schema.cc_uuid) == jsonobj['ccUuid']
assert schema.display_name == jsonobj['displayName']
for prop, json_prop in zip(schema.properties, jsonobj['properties']):
assert prop.name == json_prop['name']
assert prop.type == json_prop['type']
assert schema.memo == jsonobj['memo']
assert len(jsonobj['modules']) == 1
assert module.display_name == jsonobj['modules'][0]['displayName']
def test_update_from_json(self, _input, expected, mock_circlecore):
schema = Schema.create(display_name='Schema',
properties='x:int,y:float')
module = Module.create(display_name='Module')
box = MessageBox(uuid=generate_uuid(model=MessageBox),
schema_uuid=schema.uuid,
module_uuid=module.uuid,
display_name='MessageBoxOldName')
with MetaDataSession.begin():
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(box)
box = MessageBox.query.get(box.uuid)
box.update_from_json(_input)
with MetaDataSession.begin():
MetaDataSession.add(box)
box = MessageBox.query.get(box.uuid)
assert isinstance(box, MessageBox)
assert box.display_name == expected['display_name']
assert box.memo == expected['memo']
def test_websocket_pass_to_nanomsg(self):
"""WebSocketで受け取ったModuleからのMessageに適切なtimestamp/countを付与してnanomsgに流せているかどうか."""
# make dummy environ
with MetaDataSession.begin():
user = User.create(account='tester', password='******')
user.renew_token()
schema = Schema.create(display_name='Schema', properties='x:int,y:float')
module = Module.create(display_name='Module')
mbox = MessageBox(
uuid='4ffab839-cf56-478a-8614-6003a5980855', schema_uuid=schema.uuid, module_uuid=module.uuid
)
MetaDataSession.add(user)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
dummy_module = yield websocket_connect(
httpclient.HTTPRequest(
self.get_url('/modules/{}/{}'.format(module.uuid, mbox.uuid)),
headers={
'Authorization': 'Bearer {token}'.format(token=user.encoded_token),
}
)
)
dummy_module.write_message(json.dumps({'x': 1, 'y': 2}))
# 素直にrecvするとIOLoopがブロックされてModuleHandlerが何も返せなくなるのでModuleHandlerをまず動かす
yield sleep(1)
self.datareceiver.receive_new_message.assert_called_once_with(
'4ffab839-cf56-478a-8614-6003a5980855', {
'x': 1,
'y': 2
}
)
def test_rest_with_data(self):
"""登録されているModuleからのPOSTは404"""
# make dummy environ
with MetaDataSession.begin():
user = User.create(account='tester', password='******')
user.renew_token()
schema = Schema.create(display_name='Schema', properties='x:int,y:float,data:blob')
module = Module.create(display_name='Module')
mbox = MessageBox(
uuid='4ffab839-cf56-478a-8614-6003a5980857', schema_uuid=schema.uuid, module_uuid=module.uuid
)
MetaDataSession.add(user)
MetaDataSession.add(schema)
MetaDataSession.add(module)
MetaDataSession.add(mbox)
async def _async_side_effect():
print('_async_side_effect')
return True
# data encodingはOK
response = self.fetch(
self.get_url('/modules/{}/{}'.format(module.uuid, mbox.uuid)),
method='POST',
body=json.dumps({
'x': 10.,
'y': 20.5,
'data': encode_to_data(*load_file('test.jpg'))
}),
headers={
'Content-Type': 'application/json',
'Authorization': 'Bearer {token}'.format(token=user.encoded_token),
}
)
self.assertEqual(response.code, 200)
self.datareceiver.receive_new_message.assert_called_once()
args, kwargs = self.datareceiver.receive_new_message.call_args
assert args[0] == str(mbox.uuid)
assert args[1]['x'] == 10.
assert args[1]['y'] == 20.5
assert args[1]['data'].startswith('data:image/jpeg;')
self.reset_mock()
# そうじゃないのはNG
response = self.fetch(
self.get_url('/modules/{}/{}'.format(module.uuid, mbox.uuid)),
method='POST',
body=json.dumps({
'x': 10.,
'y': 20.5,
'data': 'hogehoge'
}),
headers={
'Content-Type': 'application/json',
'Authorization': 'Bearer {token}'.format(token=user.encoded_token),
}
)
self.assertEqual(response.code, 400)
self.datareceiver.receive_new_message.assert_not_called()
self.reset_mock()
# multipartもOK
body, headers = make_multipart_request(
'application/json', json.dumps({
'x': 10.,
'y': 20.5,
'data': 'file:///test.jpg'
}), 'test.jpg'
)
headers['Authorization'] = 'Bearer {token}'.format(token=user.encoded_token)
response = self.fetch(
self.get_url('/modules/{}/{}'.format(module.uuid, mbox.uuid)),
method='POST',
headers=headers,
body=body,
)
self.assertEqual(response.code, 200)
args, kwargs = self.datareceiver.receive_new_message.call_args
assert args[0] == str(mbox.uuid)
assert args[1]['x'] == 10.
assert args[1]['y'] == 20.5
assert 'data' in args[1]
async def test():
counterloop = asyncio.ensure_future(countup())
setup_db()
mbox_id = uuid.UUID('49EB92A3-AAE8-43A1-BC43-B7933DE96C6A')
with MetaDataSession.begin():
schema = Schema.create(display_name='Schema',
properties='x:int,y:float')
module = Module.create(display_name='Module')
mbox = MessageBox(uuid=mbox_id,
schema_uuid=schema.uuid,
module_uuid=module.uuid)
MetaDataSession.merge(schema)
MetaDataSession.merge(module)
MetaDataSession.merge(mbox)
database = Database('mysql+pymysql://root:hogehoge@localhost/crcr_test',
'./tmp/',
'./tmp/',
connect_args=dict(write_timeout=3, read_timeout=3))
database.drop_message_box(mbox)
queued_writer = QueuedDBWriter(database, './tmp/')
class Delegate(QueuedDBWriterDelegate):
async def on_reconnect(self) -> None:
print('on_reconnect')
writer.touch()
queued_writer = QueuedDBWriter(database, './tmp/', delegate=Delegate())
writer = JournalDBWriter(queued_writer, './tmp/')
print('connect')
# input('> ')
database.connect()
print('store')
# input('> ')
message = ModuleMessage(mbox.uuid, 123456.789, 0, {'x': 1, 'y': 2})
assert (await writer.store(mbox, message)) is True
print('store2 , please shutdown mysql')
await async_input('> ')
message = ModuleMessage(mbox.uuid, 123457.0, 1, {'x': 3, 'y': 4})
assert (await writer.store(mbox, message)) is True
assert (await writer.store(
mbox, ModuleMessage(mbox.uuid, 123458.0, 2, {
'x': 4,
'y': 4
}))) is True
assert (await writer.store(
mbox, ModuleMessage(mbox.uuid, 123459.0, 3, {
'x': 5,
'y': 4
}))) is True
assert (await writer.store(
mbox, ModuleMessage(mbox.uuid, 123460.0, 4, {
'x': 6,
'y': 4
}))) is True
assert (await writer.store(
mbox, ModuleMessage(mbox.uuid, 123461.0, 5, {
'x': 7,
'y': 4
}))) is True
print('store3 , please wakeup mysql')
await async_input('> ')
logger.info('DONE!')
global done
done = True
await counterloop
async def test_replicate_blob(mysql, mock_circlecore):
"""BLOBをReplicateできるかテスト
このテストは見ている範囲が広すぎるにしてはみたいところがみれてないのでは"""
mock_cc = MagicMock()
envdir = mock_circlecore[1]
database = Database(mysql.url, time_db_dir=envdir, log_dir=envdir)
with MetaDataSession.begin():
master_uuid = generate_uuid(model=CcInfo)
# ccinfo = CcInfo.query.filter_by(myself=True).one()
master_cc_info = CcInfo(uuid=master_uuid,
display_name='test master',
myself=False,
work='')
replication_master = ReplicationMaster(endpoint_url='',
info=master_cc_info)
module = Module(uuid=generate_uuid(model=Module),
cc_info=master_cc_info)
schema = Schema.create(cc_uuid=master_cc_info.uuid,
display_name='Schema',
properties='x:int,y:float,data:blob')
box = MessageBox(uuid=generate_uuid(model=MessageBox),
schema=schema,
module=module,
display_name='Box')
MetaDataSession.add(master_cc_info)
MetaDataSession.add(replication_master)
MetaDataSession.add(module)
MetaDataSession.add(schema)
MetaDataSession.add(box)
async def dummy_store(*args):
return DEFAULT
slave_dirver = SlaveDriverWorker(mock_cc, '', False)
slave_dirver.initialize()
assert len(slave_dirver.replicators) == 1
assert replication_master.id in slave_dirver.replicators
replicator = slave_dirver.replicators[replication_master.id]
replicator.state = ReplicationState.SYNCING
replicator.target_boxes = {box.uuid: box}
replicator.ws = MagicMock()
writer = QueuedDBWriter(database, envdir)
replicator.writer = writer
datahash = (
'bf3408132f944568dd02827441f8c69b1f3e5a36bd7693a7aeeffd490037b56d'
'9ad9406892ecd70cb9c0d31a746e7e790e731ae491dc0176a49369a2a4044581')
replicator.ws.read_message = Mock(side_effect=make_dummy_read_message('''\
{{
"command": "new_message",
"message": {{
"boxId": "{box_id}",
"timestamp": "1546006083.213117",
"counter": 0,
"payload": {{
"x": 32768,
"y": 3.14,
"data": {{"$data": "{datahash}", "$source": "{source}", "$type": "text/plain"}}
}}
}}
}}
'''.format(box_id=str(box.uuid), datahash=datahash,
source=master_cc_info.uuid)))
await replicator.wait_command((MasterCommand.NEW_MESSAGE, ))
replicator.ws.read_message.assert_called_once()
with database._engine.begin() as connection:
table = database.find_table_for_message_box(box)
rows = connection.execute(select([table.c.data])).fetchall()
assert len(rows) == 1
expected = '{{"$data": "{datahash}", "$source": "{source}", "$type": "text/plain"}}' \
.format(
datahash=datahash,
source=str(master_cc_info.uuid)
)
assert rows[0][0] == expected