fix sqlite fk handling in tests

Author: CosmoV

tests/common.py

@@ -1,6 +1,9 @@
 from os import getenv
 from pathlib import Path
 
+from sqlalchemy import event
+from sqlalchemy.engine import Engine
+
 
 def sqla_uri():
     testing_db_url = getenv("TESTING_DB_URL")
@@ -12,3 +15,18 @@ def sqla_uri():
 
 def is_postgres_tests() -> bool:
     return "postgres" in sqla_uri()
+
+
+def is_sqlite_tests() -> bool:
+    return "sqlite" in sqla_uri()
+
+
+@event.listens_for(Engine, "connect")
+def set_sqlite_pragma(dbapi_connection, connection_record):
+    """
+    https://docs.sqlalchemy.org/en/14/dialects/sqlite.html#foreign-key-support
+    """
+    if is_sqlite_tests():
+        cursor = dbapi_connection.cursor()
+        cursor.execute("PRAGMA foreign_keys=ON")
+        cursor.close()