test: add test for view including total certs

eox_nelp/stats/tests/api/v1/tests_views.py

@@ -88,6 +88,49 @@ def test_total_components(self, mock_metrics):
         self.assertEqual(expected_components, response.data["components"])
         mock_metrics.get_courses_metrics.assert_called_once_with("testserver")
 
+    @override_settings(
+        MIDDLEWARE=["eox_tenant.middleware.CurrentSiteMiddleware"],
+    )
+    @patch("eox_nelp.stats.api.v1.views.metrics")
+    def test_total_certificates(self, mock_metrics):
+        """
+        Test that the view will calculate the total of certificates based on the metrics values
+
+        Expected behavior:
+            - Status code 200.
+            - Components total values are the expected.
+            - get_courses_metrics is called once.
+        """
+        total_courses = 4
+        fake_metric = {
+            "certificates": {
+                "verified": {"downloadable": 0, "not_passing": 0},
+                "honor": {"downloadable": 0, "not_passing": 0},
+                "audit": {"downloadable": 0, "not_passing": 0},
+                "professional": {"downloadable": 0, "not_passing": 0},
+                "no-id-professional": {"downloadable": 5, "not_passing": 4},
+                "masters": {"downloadable": 0, "not_passing": 0},
+                "executive-education": {"downloadable": 0, "not_passing": 0},
+                "paid-executive-education": {"downloadable": 0, "not_passing": 0},
+                "paid-bootcamp": {"downloadable": 0, "not_passing": 0},
+                "total": 9,
+            }
+        }
+        mock_metrics.get_learners_metric.return_value = 5
+        mock_metrics.get_instructors_metric.return_value = 4875
+        mock_metrics.get_courses_metrics.return_value = {
+            "total_courses": total_courses,
+            "metrics": [fake_metric for c in range(total_courses)],
+        }
+        expected_certificates = fake_metric["certificates"]["total"] * total_courses
+        url_endpoint = reverse("stats-api:v1:general-stats")
+
+        response = self.client.get(url_endpoint)
+
+        self.assertEqual(status.HTTP_200_OK, response.status_code)
+        self.assertEqual(expected_certificates, response.data["certificates"])
+        mock_metrics.get_courses_metrics.assert_called_once_with("testserver")
+
     @override_settings(MIDDLEWARE=["eox_tenant.middleware.CurrentSiteMiddleware"])
     @data("post", "put", "patch", "delete")
     def test_invalid_method(self, method):
@@ -176,7 +219,8 @@ def test_get_detail(self, mock_metrics):
                 "openassessment": 0,
                 "problem": 49,
                 "video": 0
-            }
+            },
+            "certificates": 12
         }
         url_endpoint = reverse("stats-api:v1:course-stats", args=[course_id])