diff options
Diffstat (limited to 'tests/test_asyncio/test_connection.py')
| -rw-r--r-- | tests/test_asyncio/test_connection.py | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/test_asyncio/test_connection.py b/tests/test_asyncio/test_connection.py index bf59dbe..8e4fdac 100644 --- a/tests/test_asyncio/test_connection.py +++ b/tests/test_asyncio/test_connection.py @@ -6,6 +6,7 @@ from unittest.mock import patch import pytest import redis +from redis.asyncio import Redis from redis.asyncio.connection import ( BaseParser, Connection, @@ -41,6 +42,50 @@ async def test_invalid_response(create_redis): await r.connection.disconnect() +@pytest.mark.onlynoncluster +async def test_single_connection(): + """Test that concurrent requests on a single client are synchronised.""" + r = Redis(single_connection_client=True) + + init_call_count = 0 + command_call_count = 0 + in_use = False + + class Retry_: + async def call_with_retry(self, _, __): + # If we remove the single-client lock, this error gets raised as two + # coroutines will be vying for the `in_use` flag due to the two + # asymmetric sleep calls + nonlocal command_call_count + nonlocal in_use + if in_use is True: + raise ValueError("Commands should be executed one at a time.") + in_use = True + await asyncio.sleep(0.01) + command_call_count += 1 + await asyncio.sleep(0.03) + in_use = False + return "foo" + + mock_conn = mock.MagicMock() + mock_conn.retry = Retry_() + + async def get_conn(_): + # Validate only one client is created in single-client mode when + # concurrent requests are made + nonlocal init_call_count + await asyncio.sleep(0.01) + init_call_count += 1 + return mock_conn + + with mock.patch.object(r.connection_pool, "get_connection", get_conn): + with mock.patch.object(r.connection_pool, "release"): + await asyncio.gather(r.set("a", "b"), r.set("c", "d")) + + assert init_call_count == 1 + assert command_call_count == 2 + + @skip_if_server_version_lt("4.0.0") @pytest.mark.redismod @pytest.mark.onlynoncluster |