Add and commit tables one-by-one

Author: tieneupin

tests/conftest.py

@@ -133,25 +133,27 @@ def ispyb_db(ispyb_session_factory) -> Generator[Session, None, None]:
         familyName=ExampleVisit.family_name,
         login=ExampleVisit.login,
     )
+    ispyb_db.add(person_db_entry)
+    ispyb_db.commit()
+
     proposal_db_entry = Proposal(
         personId=person_db_entry.personId,
         proposalCode=ExampleVisit.proposal_code,
         proposalNumber=str(ExampleVisit.proposal_number),
     )
+    ispyb_db.add(proposal_db_entry)
+    ispyb_db.commit()
+
     bl_session_db_entry = BLSession(
         proposalId=proposal_db_entry.proposalId,
         beamLineName=ExampleVisit.instrument_name,
         visit_number=ExampleVisit.visit_number,
     )
-    ispyb_db.add_all(
-        [
-            person_db_entry,
-            proposal_db_entry,
-            bl_session_db_entry,
-        ]
-    )
+    ispyb_db.add(bl_session_db_entry)
     ispyb_db.commit()
-    yield ispyb_db  # Yield the Session and pass processing over to other function
+
+    # Yield the Session and pass processing over to other function
+    yield ispyb_db
 
     # Tidying up
     ispyb_db.rollback()