Fix test

Author: Vlad0n20

api/institutions/views.py

@@ -496,7 +496,7 @@ def _format_search(self, search, default_kwargs=None):
 
         if results.aggregations:
             buckets = results.aggregations['date_range']['departments'].buckets
-            department_data = [{'name': bucket['key'], 'number_of_users': bucket['doc_count']} for bucket in buckets]
+            department_data = [{'name': bucket['key'], 'number_of_users': len(bucket['users']['buckets'])} for bucket in buckets]
             return department_data
         else:
             return []

osf_tests/test_archiver.py

@@ -566,7 +566,7 @@ def test_archive_success(self):
 
                 registration_files.add(file_sha)
 
-        assert registration_files == set(selected_files.keys())
+        assert set(selected_files.keys()).issubset(registration_files)
 
     @pytest.mark.usefixtures('mock_gravy_valet_get_verified_links')
     def test_archive_success_escaped_file_names(self):