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python-repositories/tests/unit/redis_adapter_test.py
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Brian Bjarke JensenandCursor beb2b5128e
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Reach 100% combined coverage with targeted unit tests.
Add fast unit tests for lazy-import helpers and injected-client connect paths that integration tests miss, and raise the coverage floor to 100%.

Co-authored-by: Cursor <[email protected]>
2026-07-07 21:01:03 +02:00

117 lines
3.8 KiB
Python

"""Unit tests for RedisAdapter instantiation and injection."""
from __future__ import annotations
from unittest.mock import MagicMock
import pytest
import redis
from python_repositories.adapters.redis_adapter import RedisAdapter
from python_repositories.interfaces import JsonRepositoryInterface
from tests.conftest import TEST_REDIS_CONFIG
def test_should_adhere_to_interface() -> None:
assert issubclass(RedisAdapter, JsonRepositoryInterface)
_ = RedisAdapter(config=TEST_REDIS_CONFIG)
def test_should_have_logger_when_instantiated() -> None:
adapter = RedisAdapter(config=TEST_REDIS_CONFIG)
assert hasattr(adapter, "logger")
assert adapter.logger is not None
def test_should_not_be_connected_when_instantiated() -> None:
adapter = RedisAdapter(config=TEST_REDIS_CONFIG)
assert adapter._client is None
assert not adapter.is_connected()
def test_constructs_with_injected_config_without_env(
monkeypatch: pytest.MonkeyPatch,
) -> None:
monkeypatch.delenv("REDIS_URI", raising=False)
adapter = RedisAdapter(config=TEST_REDIS_CONFIG)
assert adapter._config == TEST_REDIS_CONFIG
def test_constructs_with_injected_client_without_env(
monkeypatch: pytest.MonkeyPatch,
) -> None:
monkeypatch.delenv("REDIS_URI", raising=False)
mock_client = MagicMock(spec=redis.Redis)
adapter = RedisAdapter(config=TEST_REDIS_CONFIG, client=mock_client)
assert adapter._client is mock_client
assert adapter._client_injected is True
def test_raises_when_client_provided_without_config() -> None:
mock_client = MagicMock(spec=redis.Redis)
with pytest.raises(ValueError, match="config is required"):
RedisAdapter(client=mock_client)
def test_disconnect_does_not_close_injected_client() -> None:
mock_client = MagicMock(spec=redis.Redis)
adapter = RedisAdapter(config=TEST_REDIS_CONFIG, client=mock_client)
adapter.disconnect()
mock_client.close.assert_not_called()
assert adapter._client is None
class CustomEnvRedisAdapter(RedisAdapter):
uri_env_var_name = "CUSTOM_REDIS_URI"
def test_subclass_custom_env_var_name(monkeypatch: pytest.MonkeyPatch) -> None:
monkeypatch.setenv("CUSTOM_REDIS_URI", "redis://custom:6379")
adapter = CustomEnvRedisAdapter()
assert adapter._config.uri == "redis://custom:6379"
def test_connect_with_injected_client_succeeds_when_ping_ok() -> None:
mock_client = MagicMock(spec=redis.Redis)
mock_client.ping.return_value = True
adapter = RedisAdapter(config=TEST_REDIS_CONFIG, client=mock_client)
adapter.connect()
mock_client.ping.assert_called_once()
def test_connect_with_injected_client_raises_when_ping_false() -> None:
mock_client = MagicMock(spec=redis.Redis)
mock_client.ping.return_value = False
adapter = RedisAdapter(config=TEST_REDIS_CONFIG, client=mock_client)
with pytest.raises(ConnectionError, match="Could not connect to Redis"):
adapter.connect()
def test_connect_with_injected_client_raises_on_redis_error() -> None:
mock_client = MagicMock(spec=redis.Redis)
mock_client.ping.side_effect = redis.ConnectionError("connection lost")
adapter = RedisAdapter(config=TEST_REDIS_CONFIG, client=mock_client)
with pytest.raises(ConnectionError, match="Could not connect to Redis"):
adapter.connect()
def test_connect_closes_existing_non_injected_client(
monkeypatch: pytest.MonkeyPatch,
) -> None:
stale_client = MagicMock(spec=redis.Redis)
new_client = MagicMock(spec=redis.Redis)
new_client.ping.return_value = True
adapter = RedisAdapter(config=TEST_REDIS_CONFIG)
adapter._client = stale_client
monkeypatch.setattr("redis.Redis.from_url", lambda *args, **kwargs: new_client)
adapter.connect()
stale_client.close.assert_called_once()
assert adapter._client is new_client