From 2f57a07331ecfba944785fac9d5f690affa4ddcf Mon Sep 17 00:00:00 2001
From: Alexander Dusenbery <adusenbery@2u.com>
Date: Tue, 25 Feb 2025 16:00:14 -0500
Subject: [PATCH] fix: return empty dict if no customer results

---
 .../apps/api_client/lms_client.py             |  6 ++-
 .../apps/api_client/tests/test_lms_client.py  | 41 +++++++++++++++++--
 2 files changed, 42 insertions(+), 5 deletions(-)

diff --git a/enterprise_access/apps/api_client/lms_client.py b/enterprise_access/apps/api_client/lms_client.py
index aa8943c9..e863c7ab 100755
--- a/enterprise_access/apps/api_client/lms_client.py
+++ b/enterprise_access/apps/api_client/lms_client.py
@@ -100,8 +100,10 @@ def get_enterprise_customer_data(self, enterprise_customer_uuid=None, enterprise
             response = self.client.get(endpoint, timeout=settings.LMS_CLIENT_TIMEOUT)
             response.raise_for_status()
             payload = response.json()
-            if results := payload.get('results'):
-                return results[0]
+            if 'count' in payload:
+                if results := payload.get('results'):
+                    return results[0]
+                return {}
             return payload
         except requests.exceptions.HTTPError as exc:
             logger.exception(exc)
diff --git a/enterprise_access/apps/api_client/tests/test_lms_client.py b/enterprise_access/apps/api_client/tests/test_lms_client.py
index 7f990a0e..98e6ce38 100644
--- a/enterprise_access/apps/api_client/tests/test_lms_client.py
+++ b/enterprise_access/apps/api_client/tests/test_lms_client.py
@@ -140,9 +140,11 @@ def test_get_enterprise_customer_data(
             'uuid': 'some-uuid',
             'slug': 'some-test-slug',
         }
-        mock_json.return_value = mock_enterprise_customer
-        if not enterprise_uuid and enterprise_slug:
-            mock_json.return_value = {'results': [mock_enterprise_customer]}
+        if enterprise_uuid:
+            mock_json.return_value = mock_enterprise_customer
+        else:
+            mock_json.return_value = {'results': [mock_enterprise_customer], 'count': 1}
+
         mock_oauth_client.return_value.get.return_value = requests.Response()
         mock_oauth_client.return_value.get.return_value.status_code = 200
 
@@ -174,6 +176,39 @@ def test_get_enterprise_customer_data(
             timeout=settings.LMS_CLIENT_TIMEOUT,
         )
 
+    @mock.patch('requests.Response.json')
+    @mock.patch('enterprise_access.apps.api_client.base_oauth.OAuthAPIClient')
+    def test_get_enterprise_customer_data_no_hits(
+        self,
+        mock_oauth_client,
+        mock_json,
+    ):
+        """
+        Verify client returns empty dict if no results when filtering by slug.
+        """
+        mock_json.return_value = {'results': [], 'count': 0}
+
+        mock_oauth_client.return_value.get.return_value = requests.Response()
+        mock_oauth_client.return_value.get.return_value.status_code = 200
+
+        client = LmsApiClient()
+        customer_data = client.get_enterprise_customer_data(
+            enterprise_customer_slug='nuthin',
+        )
+
+        self.assertEqual(customer_data, {})
+
+        expected_url = (
+            'http://edx-platform.example.com/'
+            'enterprise/api/v1/'
+            'enterprise-customer/'
+            '?slug=nuthin'
+        )
+        mock_oauth_client.return_value.get.assert_called_with(
+            expected_url,
+            timeout=settings.LMS_CLIENT_TIMEOUT,
+        )
+
     @mock.patch('requests.Response.json')
     @mock.patch('enterprise_access.apps.api_client.base_oauth.OAuthAPIClient')
     def test_create_enterprise_customer_data(self, mock_oauth_client, mock_json):