added test_notification_statistics file

put in new rest subfolder in anticipation of refactoring test_rest.py

tests/app/notifications/rest/test_notification_statistics.py

@@ -0,0 +1,68 @@
+from datetime import date, timedelta
+
+from flask import json
+from freezegun import freeze_time
+
+from tests import create_authorization_header
+from tests.app.conftest import sample_notification_statistics as create_sample_notification_statistics
+
+
+def test_get_notification_statistics(notify_api, sample_notification_statistics):
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+            auth_header = create_authorization_header(
+                service_id=sample_notification_statistics.service_id
+            )
+
+            response = client.get(
+                '/notifications/statistics',
+                headers=[auth_header]
+            )
+
+            notifications = json.loads(response.get_data(as_text=True))
+            stats = notifications['data'][0]
+            assert stats['emails_requested'] == 2
+            assert stats['emails_delivered'] == 1
+            assert stats['emails_failed'] == 1
+            assert stats['sms_requested'] == 2
+            assert stats['sms_delivered'] == 1
+            assert stats['service'] == str(sample_notification_statistics.service_id)
+            assert response.status_code == 200
+
+
+@freeze_time('1955-11-05T12:00:00')
+def test_get_notification_statistics_only_returns_today(notify_api, notify_db, notify_db_session, sample_service):
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+            yesterdays_notification_statistics = create_sample_notification_statistics(
+                notify_db,
+                notify_db_session,
+                service=sample_service,
+                day=date.today() - timedelta(days=1)
+            )
+            todays_notification_statistics = create_sample_notification_statistics(
+                notify_db,
+                notify_db_session,
+                service=sample_service,
+                day=date.today()
+            )
+            tomorrows_notification_statistics = create_sample_notification_statistics(
+                notify_db,
+                notify_db_session,
+                service=sample_service,
+                day=date.today() + timedelta(days=1)
+            )
+
+            auth_header = create_authorization_header(
+                service_id=sample_service.id
+            )
+
+            response = client.get(
+                '/notifications/statistics',
+                headers=[auth_header]
+            )
+
+            notifications = json.loads(response.get_data(as_text=True))
+            assert len(notifications['data']) == 1
+            assert notifications['data'][0]['day'] == date.today().isoformat()
+            assert response.status_code == 200