Update test_scheduled_jobs.py

Author: iamareebjamal

tests/all/integration/api/helpers/test_scheduled_jobs.py

@@ -1,6 +1,6 @@
 import datetime
 
-from app import db
+from app import current_app as app, db
 from app.factories.event_invoice import EventInvoiceFactory
 from app.models.event_invoice import EventInvoice
 from app.api.helpers.scheduled_jobs import event_invoices_mark_due
@@ -13,7 +13,7 @@ class TestScheduledJobs(OpenEventTestCase):
     def test_event_invoices_mark_due(self):
         """Method to test marking of event invoices as due"""
 
-        with self.app.test_request_context():
+        with app.test_request_context():
             event_invoice = EventInvoiceFactory(event__ends_at=datetime.datetime(2019, 7, 20))
             db.session.commit()
             event_invoice_id = event_invoice.id