add tests for new statistics and fact notification status functions

tests/app/db.py

@@ -35,6 +35,7 @@ from app.models import (
     LetterRate,
     InvitedOrganisationUser,
     FactBilling,
+    FactNotificationStatus,
     Complaint
 )
 from app.dao.users_dao import save_model_user
@@ -565,6 +566,36 @@ def create_ft_billing(bst_date,
     return data
 
 
+def create_ft_notification_status(
+    bst_date,
+    notification_type,
+    service=None,
+    template=None,
+    job=None,
+    key_type='normal',
+    notification_status='delivered',
+    count=1
+):
+    if not service:
+        service = create_service()
+    if not template:
+        template = create_template(service=service, template_type=notification_type)
+
+    data = FactNotificationStatus(
+        bst_date=bst_date,
+        template_id=template.id,
+        service_id=service.id,
+        job_id=job.id if job else uuid.UUID(int=0),
+        notification_type=notification_type,
+        key_type=key_type,
+        notification_status=notification_status,
+        notification_count=count
+    )
+    db.session.add(data)
+    db.session.commit()
+    return data
+
+
 def create_complaint(service=None,
                      notification=None,
                      created_at=None):