feat: add clear_all_tables SQLAlchemy helper

Author: paulschwoerer

requirements.txt

@@ -1,2 +1,3 @@
 http_request_recorder @ git+https://github.com/sipgate/http-request-recorder.git@main
+SQLAlchemy~=2.0.43
 pre-commit

sipgate_e2e_test_utils/db.py

@@ -0,0 +1,14 @@
+from sqlalchemy import text
+from sqlalchemy.engine import Engine
+from sqlalchemy.orm import Session
+
+
+def clear_all_tables(db_engine: Engine, model):
+    with Session(db_engine) as db_session:
+        tables = list(model.metadata.sorted_tables)
+        tables.reverse()
+        db_session.execute(text('SET FOREIGN_KEY_CHECKS = 0;'))
+        for table in tables:
+            db_session.execute(table.delete())
+        db_session.execute(text('SET FOREIGN_KEY_CHECKS = 1;'))
+        db_session.commit()