Currently, this part in shell_helpers.js is not run against sharded cluster since this assertion is expected to fail. On a sharded cluster, changeStreamCursor.objsLeftInBatch() is expected to be 0 because of how router getMore command doesn't respect batchSize (this comment references SERVER-31992). However, based on the comment, if we do assert(changeStreamCursor.hasNext()); right before that assertion, the entire part should technically succeed. However, based on local testing, this assertion fails, i.e. the change stream only returns 4 docs although there are 5 updates.