Handle zero results in pagination

arkindex/pagination.py

@@ -48,6 +48,11 @@ class ResponsePaginator(Sized, Iterator):
             if self.data and self.data.get('next') is None:
                 raise StopIteration
             self._fetch_page(self.current_page + 1)
+
+        # Even after fetching a new page, if the new page is empty, just fail
+        if len(self.results) < 1:
+            raise StopIteration
+
         return self.results.pop(0)
 
     def __len__(self):

arkindex/tests/test_pagination.py

+import pytest
+import responses
+from arkindex import ArkindexClient
+
+
+@responses.activate
+def test_pagination_empty():
+    responses.add(
+        responses.GET,
+        'https://dummy.test/api/v1/elements/',
+        json={'count': 0, 'previous': None, 'next': None, 'results': []},
+    )
+
+    cli = ArkindexClient('t0k3n', base_url='https://dummy.test')
+    with pytest.raises(StopIteration):
+        next(cli.paginate('ListElements'))