pre-commit renamed files to PEP standard and removed unused imports

tests/get_visual_communication_test.py

@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+from database import connect
+from database import get_visual_communication
+from dotenv import load_dotenv
+
+if __name__ == '__main__':
+    # prepare env vars
+    env_path = Path(__file__).parent.parent / 'local.env'
+    assert env_path.exists()
+    load_dotenv(env_path)
+    os.environ['MONGO_HOST'] = 'localhost'
+    # connect to database
+    collection, db, client = connect()
+    print(client.server_info())
+    # get visual communication
+    vis_com = get_visual_communication(collection)
+    print(vis_com)