Added examples to schema of CursorPagination (#8687)

* Added examples to schema of CursorPagination

Fix #8686

Added missing examples for CursorPagination class to disable warnings in https://github.com/tfranzel/drf-spectacular and make it consistent with other pagination classes.

* Adapted test case for paginated response schema

Author: norbertschuler

rest_framework/pagination.py

@@ -898,10 +898,16 @@ def get_paginated_response_schema(self, schema):
                 'next': {
                     'type': 'string',
                     'nullable': True,
+                    'format': 'uri',
+                    'example': 'http://api.example.org/accounts/?{cursor_query_param}=cD00ODY%3D"'.format(
+                        cursor_query_param=self.cursor_query_param)
                 },
                 'previous': {
                     'type': 'string',
                     'nullable': True,
+                    'format': 'uri',
+                    'example': 'http://api.example.org/accounts/?{cursor_query_param}=cj0xJnA9NDg3'.format(
+                        cursor_query_param=self.cursor_query_param)
                 },
                 'results': schema,
             },

tests/test_pagination.py

@@ -922,10 +922,14 @@ def test_get_paginated_response_schema(self):
                 'next': {
                     'type': 'string',
                     'nullable': True,
+                    'format': 'uri',
+                    'example': 'http://api.example.org/accounts/?cursor=cD00ODY%3D"'
                 },
                 'previous': {
                     'type': 'string',
                     'nullable': True,
+                    'format': 'uri',
+                    'example': 'http://api.example.org/accounts/?cursor=cj0xJnA9NDg3'
                 },
                 'results': unpaginated_schema,
             },