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]>

tests/unit/redis_adapter_test.py

@@ -69,3 +69,48 @@ 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