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conftest.py
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conftest.py
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import argparse
import asyncio
import random
from distutils.version import StrictVersion
from urllib.parse import urlparse
import pytest
import aioredis
from aioredis.client import Monitor
from aioredis.connection import (
HIREDIS_AVAILABLE,
HiredisParser,
PythonParser,
parse_url,
)
from .compat import mock
# redis 6 release candidates report a version number of 5.9.x. Use this
# constant for skip_if decorators as a placeholder until 6.0.0 is officially
# released
REDIS_6_VERSION = "5.9.0"
REDIS_INFO = {}
default_redis_url = "redis://localhost:6379/9"
# Taken from python3.9
class BooleanOptionalAction(argparse.Action):
def __init__(
self,
option_strings,
dest,
default=None,
type=None,
choices=None,
required=False,
help=None,
metavar=None,
):
_option_strings = []
for option_string in option_strings:
_option_strings.append(option_string)
if option_string.startswith("--"):
option_string = "--no-" + option_string[2:]
_option_strings.append(option_string)
if help is not None and default is not None:
help += f" (default: {default})"
super().__init__(
option_strings=_option_strings,
dest=dest,
nargs=0,
default=default,
type=type,
choices=choices,
required=required,
help=help,
metavar=metavar,
)
def __call__(self, parser, namespace, values, option_string=None):
if option_string in self.option_strings:
setattr(namespace, self.dest, not option_string.startswith("--no-"))
def format_usage(self):
return " | ".join(self.option_strings)
def pytest_addoption(parser):
parser.addoption(
"--redis-url",
default=default_redis_url,
action="store",
help="Redis connection string, defaults to `%(default)s`",
)
parser.addoption(
"--uvloop", action=BooleanOptionalAction, help="Run tests with uvloop"
)
async def _get_info(redis_url):
client = aioredis.Redis.from_url(redis_url)
info = await client.info()
await client.connection_pool.disconnect()
return info
def pytest_sessionstart(session):
use_uvloop = session.config.getoption("--uvloop")
if use_uvloop:
try:
import uvloop
uvloop.install()
except ImportError as e:
raise RuntimeError(
"Can not import uvloop, make sure it is installed"
) from e
redis_url = session.config.getoption("--redis-url")
info = asyncio.get_event_loop().run_until_complete(_get_info(redis_url))
version = info["redis_version"]
arch_bits = info["arch_bits"]
REDIS_INFO["version"] = version
REDIS_INFO["arch_bits"] = arch_bits
def skip_if_server_version_lt(min_version):
redis_version = REDIS_INFO["version"]
check = StrictVersion(redis_version) < StrictVersion(min_version)
return pytest.mark.skipif(check, reason=f"Redis version required >= {min_version}")
def skip_if_server_version_gte(min_version):
redis_version = REDIS_INFO["version"]
check = StrictVersion(redis_version) >= StrictVersion(min_version)
return pytest.mark.skipif(check, reason=f"Redis version required < {min_version}")
def skip_unless_arch_bits(arch_bits):
return pytest.mark.skipif(
REDIS_INFO["arch_bits"] != arch_bits,
reason=f"server is not {arch_bits}-bit",
)
@pytest.fixture(
params=[
(True, PythonParser),
(False, PythonParser),
pytest.param(
(True, HiredisParser),
marks=pytest.mark.skipif(
not HIREDIS_AVAILABLE, reason="hiredis is not installed"
),
),
pytest.param(
(False, HiredisParser),
marks=pytest.mark.skipif(
not HIREDIS_AVAILABLE, reason="hiredis is not installed"
),
),
],
ids=[
"single-python-parser",
"pool-python-parser",
"single-hiredis",
"pool-hiredis",
],
)
def create_redis(request, event_loop):
"""Wrapper around aioredis.create_redis."""
single_connection, parser_cls = request.param
async def f(url: str = request.config.getoption("--redis-url"), **kwargs):
single = kwargs.pop("single_connection_client", False) or single_connection
parser_class = kwargs.pop("parser_class", None) or parser_cls
url_options = parse_url(url)
url_options.update(kwargs)
pool = aioredis.ConnectionPool(parser_class=parser_class, **url_options)
client: aioredis.Redis = aioredis.Redis(connection_pool=pool)
if single:
client = client.client()
await client.initialize()
def teardown():
async def ateardown():
if "username" in kwargs:
return
try:
await client.flushdb()
except aioredis.ConnectionError:
# handle cases where a test disconnected a client
# just manually retry the flushdb
await client.flushdb()
await client.close()
await client.connection_pool.disconnect()
if event_loop.is_running():
event_loop.create_task(ateardown())
else:
event_loop.run_until_complete(ateardown())
request.addfinalizer(teardown)
return client
return f
@pytest.fixture()
async def r(create_redis):
yield await create_redis()
@pytest.fixture()
async def r2(create_redis):
"""A second client for tests that need multiple"""
yield await create_redis()
def _gen_cluster_mock_resp(r, response):
connection = mock.AsyncMock()
connection.read_response.return_value = response
r.connection = connection
return r
@pytest.fixture()
async def mock_cluster_resp_ok(create_redis, **kwargs):
r = await create_redis(**kwargs)
return _gen_cluster_mock_resp(r, "OK")
@pytest.fixture()
async def mock_cluster_resp_int(create_redis, **kwargs):
r = await create_redis(**kwargs)
return _gen_cluster_mock_resp(r, "2")
@pytest.fixture()
async def mock_cluster_resp_info(create_redis, **kwargs):
r = await create_redis(**kwargs)
response = (
"cluster_state:ok\r\ncluster_slots_assigned:16384\r\n"
"cluster_slots_ok:16384\r\ncluster_slots_pfail:0\r\n"
"cluster_slots_fail:0\r\ncluster_known_nodes:7\r\n"
"cluster_size:3\r\ncluster_current_epoch:7\r\n"
"cluster_my_epoch:2\r\ncluster_stats_messages_sent:170262\r\n"
"cluster_stats_messages_received:105653\r\n"
)
return _gen_cluster_mock_resp(r, response)
@pytest.fixture()
async def mock_cluster_resp_nodes(create_redis, **kwargs):
r = await create_redis(**kwargs)
response = (
"c8253bae761cb1ecb2b61857d85dfe455a0fec8b 172.17.0.7:7006 "
"slave aa90da731f673a99617dfe930306549a09f83a6b 0 "
"1447836263059 5 connected\n"
"9bd595fe4821a0e8d6b99d70faa660638a7612b3 172.17.0.7:7008 "
"master - 0 1447836264065 0 connected\n"
"aa90da731f673a99617dfe930306549a09f83a6b 172.17.0.7:7003 "
"myself,master - 0 0 2 connected 5461-10922\n"
"1df047e5a594f945d82fc140be97a1452bcbf93e 172.17.0.7:7007 "
"slave 19efe5a631f3296fdf21a5441680f893e8cc96ec 0 "
"1447836262556 3 connected\n"
"4ad9a12e63e8f0207025eeba2354bcf4c85e5b22 172.17.0.7:7005 "
"master - 0 1447836262555 7 connected 0-5460\n"
"19efe5a631f3296fdf21a5441680f893e8cc96ec 172.17.0.7:7004 "
"master - 0 1447836263562 3 connected 10923-16383\n"
"fbb23ed8cfa23f17eaf27ff7d0c410492a1093d6 172.17.0.7:7002 "
"master,fail - 1447829446956 1447829444948 1 disconnected\n"
)
return _gen_cluster_mock_resp(r, response)
@pytest.fixture()
async def mock_cluster_resp_slaves(create_redis, **kwargs):
r = await create_redis(**kwargs)
response = (
"['1df047e5a594f945d82fc140be97a1452bcbf93e 172.17.0.7:7007 "
"slave 19efe5a631f3296fdf21a5441680f893e8cc96ec 0 "
"1447836789290 3 connected']"
)
return _gen_cluster_mock_resp(r, response)
@pytest.fixture(scope="session")
def master_host(request):
url = request.config.getoption("--redis-url")
parts = urlparse(url)
yield parts.hostname
async def wait_for_command(client: aioredis.Redis, monitor: Monitor, command: str):
# issue a command with a key name that's local to this process.
# if we find a command with our key before the command we're waiting
# for, something went wrong
redis_version = REDIS_INFO["version"]
if StrictVersion(redis_version) >= StrictVersion("5.0.0"):
id_str = str(await client.client_id())
else:
id_str = "%08x" % random.randrange(2 ** 32)
key = "__REDIS-PY-%s__" % id_str
await client.get(key)
while True:
monitor_response = await monitor.next_command()
if command in monitor_response["command"]:
return monitor_response
if key in monitor_response["command"]:
return None