Add ServiceLetterContact data model and script

tests/app/db.py

@@ -26,7 +26,8 @@ from app.models import (
     INBOUND_SMS_TYPE,
     KEY_TYPE_NORMAL,
     ServiceInboundApi,
-    ServiceEmailReplyTo
+    ServiceEmailReplyTo,
+    ServiceLetterContact
 )
 from app.dao.users_dao import save_model_user
 from app.dao.notifications_dao import dao_create_notification, dao_created_scheduled_notification
@@ -347,3 +348,21 @@ def create_reply_to_email(
     db.session.commit()
 
     return reply_to
+
+
+def create_letter_contact(
+    service,
+    contact_block,
+    is_default=True
+):
+    data = {
+        'service': service,
+        'contact_block': contact_block,
+        'is_default': is_default,
+    }
+    letter_content = ServiceLetterContact(**data)
+
+    db.session.add(letter_content)
+    db.session.commit()
+
+    return letter_content

tests/app/test_model.py

@@ -21,7 +21,13 @@ from tests.app.conftest import (
     sample_template as create_sample_template,
     sample_notification_with_job as create_sample_notification_with_job
 )
-from tests.app.db import create_notification, create_service, create_inbound_number, create_reply_to_email
+from tests.app.db import (
+    create_notification,
+    create_service,
+    create_inbound_number,
+    create_reply_to_email,
+    create_letter_contact
+)
 from tests.conftest import set_config
 
 
@@ -262,3 +268,14 @@ def test_service_get_default_reply_to_email_address(sample_service):
     create_reply_to_email(service=sample_service, email_address="default@email.com")
 
     assert sample_service.get_default_reply_to_email_address() == 'default@email.com'
+
+
+def test_service_get_default_contact_letter(sample_service):
+    create_letter_contact(service=sample_service, contact_block='London,\nNW1A 1AA')
+
+    assert sample_service.get_default_letter_contact() == 'London,\nNW1A 1AA'
+
+
+# this test will need to be removed after letter_contact_block is dropped
+def test_service_get_default_letter_contact_block_from_service(sample_service):
+    assert sample_service.get_default_letter_contact() == sample_service.letter_contact_block