Add new endpoint to get available inbound number.

Add new endpoint to allocate a specific number to a given service.

This will allow the platform admin user to choose a number when setting the inbound_sms permission for a service.

tests/app/inbound_number/test_rest.py

@@ -1,3 +1,5 @@
+import uuid
+
 from app.dao.inbound_numbers_dao import dao_get_inbound_number_for_service
 from app.models import ServiceSmsSender
 
@@ -129,3 +131,59 @@ def test_allocate_inbound_number_insert_update_service_sms_sender(
     assert service_sms_senders[0].sms_sender == inbound_number.number
     assert service_sms_senders[0].inbound_number_id == inbound_number.id
     assert service_sms_senders[0].is_default
+
+
+def test_allocate_inbound_number_to_service(admin_request, notify_db_session):
+    service = create_service()
+    inbound_number = create_inbound_number(number='1235468')
+
+    admin_request.post(
+        'inbound_number.allocate_inbound_number_to_service',
+        _expected_status=204,
+        service_id=service.id,
+        inbound_number_id=inbound_number.id
+    )
+    sms_sender = ServiceSmsSender.query.filter_by(service_id=service.id).first()
+    assert sms_sender.sms_sender == inbound_number.number
+    assert sms_sender.inbound_number_id == inbound_number.id
+
+
+def test_allocate_inbound_number_to_service_returns_404_if_service_does_not_exist(
+        admin_request, notify_db_session
+):
+    inbound_number = create_inbound_number(number='1235468')
+
+    admin_request.post(
+        'inbound_number.allocate_inbound_number_to_service',
+        _expected_status=404,
+        service_id=uuid.uuid4(),
+        inbound_number_id=inbound_number.id
+    )
+
+
+def test_allocate_inbound_number_to_service_returns_500_if_inbound_number_is_assigned(
+        admin_request, notify_db_session
+):
+    service = create_service()
+    inbound_number = create_inbound_number(number='1235468', service_id=service.id)
+
+    admin_request.post(
+        'inbound_number.allocate_inbound_number_to_service',
+        _expected_status=404,
+        service_id=uuid.uuid4(),
+        inbound_number_id=inbound_number.id
+    )
+
+
+def test_get_available_inbound_numbers_returns_empty_list(admin_request):
+    result = admin_request.get('inbound_number.get_available_inbound_numbers')
+
+    assert result['data'] == []
+
+
+def test_get_available_inbound_numbers(admin_request, sample_inbound_numbers):
+    result = admin_request.get('inbound_number.get_available_inbound_numbers')
+
+    assert len(result['data']) == 1
+    assert result['data'] == [i.serialize() for i in sample_inbound_numbers if
+                              i.service_id is None]