tests(db): Add database connector initialization test

Author: Davidyz

src/vectorcode/database/__init__.py

@@ -7,7 +7,7 @@
 logger = logging.getLogger(name=__name__)
 
 
-def get_database_connector(config: Config) -> DatabaseConnectorBase:  # pragma: nocover
+def get_database_connector(config: Config) -> DatabaseConnectorBase:
     """
     It's CRUCIAL to keep the `import`s of the database connectors in the branches.
     This allow them to be lazy-imported. This also allow us to keep the main package

tests/database/test_db_init.py

@@ -0,0 +1,16 @@
+import pytest
+
+from vectorcode.cli_utils import Config
+from vectorcode.database import get_database_connector
+from vectorcode.database.chroma0 import ChromaDB0Connector
+
+
+def test_get_database_connector():
+    assert isinstance(
+        get_database_connector(Config(db_type="ChromaDB0")), ChromaDB0Connector
+    )
+
+
+def test_get_database_connector_invalid_type():
+    with pytest.raises(ValueError):
+        get_database_connector(Config(db_type="InvalidDB"))