Add config and client injection with test reorganization.

Introduce typed config objects, optional adapter injection, and .env loading to simplify testing while preserving env-based defaults for production usage.

Co-authored-by: Cursor <[email protected]>

tests/unit/redis_adapter_test.py

@@ -0,0 +1,71 @@
+"""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"