[WIP] Added dao method and rest endpoint for getting template

statistics by service.

Some cosmetic changes to imports.

Added fix for job rest not correctly returning errors.

tests/app/template_statistics/test_rest.py

@@ -0,0 +1,136 @@
+import json
+from freezegun import freeze_time
+
+from app import db
+from app.models import TemplateStatistics
+
+from tests import create_authorization_header
+
+
+@freeze_time('2016-04-09')
+def test_get_template_statistics_for_service_for_last_week(notify_api, sample_template):
+
+    # make 9 stats records from 1st to 9th April
+    for i in range(1, 10):
+        past_date = '2016-04-0{}'.format(i)
+        with freeze_time(past_date):
+            template_stats = TemplateStatistics(template_id=sample_template.id,
+                                                service_id=sample_template.service_id)
+            db.session.add(template_stats)
+            db.session.commit()
+
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+
+            auth_header = create_authorization_header(
+                path='/service/{}/template-statistics'.format(sample_template.service_id),
+                method='GET'
+            )
+
+            response = client.get(
+                '/service/{}/template-statistics'.format(sample_template.service_id),
+                headers=[('Content-Type', 'application/json'), auth_header],
+                query_string={'limit_days': 7}
+            )
+
+            assert response.status_code == 200
+            json_resp = json.loads(response.get_data(as_text=True))
+            assert len(json_resp['data']) == 7
+            assert json_resp['data'][0]['day'] == '2016-04-09'
+            assert json_resp['data'][6]['day'] == '2016-04-03'
+
+
+@freeze_time('2016-04-30')
+def test_get_template_statistics_for_service_for_last_actual_week_with_data(notify_api, sample_template):
+
+    # make 9 stats records from 1st to 9th April
+    for i in range(1, 10):
+        past_date = '2016-04-0{}'.format(i)
+        with freeze_time(past_date):
+            template_stats = TemplateStatistics(template_id=sample_template.id,
+                                                service_id=sample_template.service_id)
+            db.session.add(template_stats)
+            db.session.commit()
+
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+
+            auth_header = create_authorization_header(
+                path='/service/{}/template-statistics'.format(sample_template.service_id),
+                method='GET'
+            )
+
+            # Date is frozen at 2016-04-30 and no data written since
+            response = client.get(
+                '/service/{}/template-statistics'.format(sample_template.service_id),
+                headers=[('Content-Type', 'application/json'), auth_header],
+                query_string={'limit_days': 7}
+            )
+
+            assert response.status_code == 200
+            json_resp = json.loads(response.get_data(as_text=True))
+            assert len(json_resp['data']) == 7
+            assert json_resp['data'][0]['day'] == '2016-04-09'
+            assert json_resp['data'][6]['day'] == '2016-04-03'
+
+
+def test_get_all_template_statistics_for_service(notify_api, sample_template):
+
+    # make 9 stats records from 1st to 9th April
+    for i in range(1, 10):
+        past_date = '2016-04-0{}'.format(i)
+        with freeze_time(past_date):
+            template_stats = TemplateStatistics(template_id=sample_template.id,
+                                                service_id=sample_template.service_id)
+            db.session.add(template_stats)
+            db.session.commit()
+
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+
+            auth_header = create_authorization_header(
+                path='/service/{}/template-statistics'.format(sample_template.service_id),
+                method='GET'
+            )
+
+            response = client.get(
+                '/service/{}/template-statistics'.format(sample_template.service_id),
+                headers=[('Content-Type', 'application/json'), auth_header]
+            )
+
+            assert response.status_code == 200
+            json_resp = json.loads(response.get_data(as_text=True))
+            assert len(json_resp['data']) == 9
+            assert json_resp['data'][0]['day'] == '2016-04-09'
+            assert json_resp['data'][8]['day'] == '2016-04-01'
+
+
+def test_get_all_template_statistics_with_bad_limit_arg_returns_400(notify_api, sample_template):
+
+    # make 9 stats records from 1st to 9th April
+    for i in range(1, 10):
+        past_date = '2016-04-0{}'.format(i)
+        with freeze_time(past_date):
+            template_stats = TemplateStatistics(template_id=sample_template.id,
+                                                service_id=sample_template.service_id)
+            db.session.add(template_stats)
+            db.session.commit()
+
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+
+            auth_header = create_authorization_header(
+                path='/service/{}/template-statistics'.format(sample_template.service_id),
+                method='GET'
+            )
+
+            response = client.get(
+                '/service/{}/template-statistics'.format(sample_template.service_id),
+                headers=[('Content-Type', 'application/json'), auth_header],
+                query_string={'limit_days': 'blurk'}
+            )
+
+            assert response.status_code == 400
+            json_resp = json.loads(response.get_data(as_text=True))
+            assert json_resp['result'] == 'error'
+            assert json_resp['message'] == ['Limit days blurk is not an integer']