Tests: Fix randomizedtest fail
Tests: Fix randomizedtest fail

Closes #76

gesellix/elasticsearch-river-couchdb,Bouhnosaure/elasticsearch-river-couchdb,elastic/elasticsearch-river-couchdb,Bouhnosaure/elasticsearch-river-couchdb,elastic/elasticsearch-river-couchdb,SafetyCulture/elasticsearch-river-couchdb,gesellix/elasticsearch-river-couchdb,SafetyCulture/elasticsearch-river-couchdb