fix: ruff

Author: Anas12091101

lms/djangoapps/course_api/tests/test_serializers.py

@@ -142,29 +142,29 @@ def test_pacing(self, self_paced, expected_pacing):
         result = self._get_result(course)
         assert result['pacing'] == expected_pacing
 
-    @mock.patch(
-        "lms.djangoapps.course_api.serializers.can_show_certificate_available_date_field",
-        return_value=True,
-    )
-    def test_certificate_available_date_included(self, _mock):
+    def test_certificate_available_date_included(self):
         """Test that certificate_available_date is included when the field should be shown."""
         course = self.create_course()
-        result = self._get_result(course)
+        with mock.patch(
+            "lms.djangoapps.course_api.serializers.can_show_certificate_available_date_field",
+            return_value=True,
+        ):
+            result = self._get_result(course)
         assert 'certificate_available_date' in result
         actual = result['certificate_available_date']
         if isinstance(actual, datetime):
             assert actual.strftime('%Y-%m-%dT%H:%M:%SZ') == '2015-08-14T00:00:00Z'
         else:
             assert actual == '2015-08-14T00:00:00Z'
 
-    @mock.patch(
-        "lms.djangoapps.course_api.serializers.can_show_certificate_available_date_field",
-        return_value=False,
-    )
-    def test_certificate_available_date_excluded(self, _mock):
+    def test_certificate_available_date_excluded(self):
         """Test that certificate_available_date is excluded when the field should not be shown."""
         course = self.create_course()
-        result = self._get_result(course)
+        with mock.patch(
+            "lms.djangoapps.course_api.serializers.can_show_certificate_available_date_field",
+            return_value=False,
+        ):
+            result = self._get_result(course)
         assert 'certificate_available_date' not in result