mongo/jstests/replsets/change_streams_cluster_parameters_standalone.js

/**
 * Checks if the changeStreams and changeStreamOptions parameters allow standalone instances to
 * initiate.
 *
 * @tags: [
 *  does_not_support_stepdowns,
 *  multiversion_incompatible,
 *  requires_replication,
 *  requires_persistence,
 * ]
 */

import {
    ChangeStreamMultitenantReplicaSetTest
} from "jstests/serverless/libs/change_collection_util.js";

(function() {
'use strict';

const kExpireAfterSeconds = NumberLong(7177);

jsTestLog('changeStreams cluster parameter must not prevent a standalone node to start');
{
    const rst = new ChangeStreamMultitenantReplicaSetTest({name: 'replSet', nodes: 3});

    const primary = rst.getPrimary();

    assert.commandWorked(primary.getDB('admin').runCommand(
        {setClusterParameter: {changeStreams: {expireAfterSeconds: kExpireAfterSeconds}}}));

    rst.awaitReplication();

    rst.stopSet(/*signal=*/ null, /*forRestart=*/ true);

    const primaryStandalone =
        MongoRunner.runMongod({dbpath: primary.dbpath, noReplSet: true, noCleanData: true});

    assert.eq(
        primaryStandalone.getDB('config').clusterParameters.countDocuments({_id: 'changeStreams'}),
        1);

    MongoRunner.stopMongod(primaryStandalone);

    rst.startSet({restart: true});
    rst.stopSet();
}

jsTestLog('changeStreamOptions cluster parameter must not prevent a standalone node to start');
{
    const replicaSet = new ReplSetTest({name: 'replSet2', nodes: 3});
    replicaSet.startSet();
    replicaSet.initiate();
    const primary = replicaSet.getPrimary();

    assert.commandWorked(primary.getDB('admin').runCommand({
        setClusterParameter:
            {changeStreamOptions: {preAndPostImages: {expireAfterSeconds: kExpireAfterSeconds}}}
    }));

    replicaSet.awaitReplication();

    replicaSet.stopSet(/*signal=*/ null, /*forRestart=*/ true);

    const primaryStandalone =
        MongoRunner.runMongod({dbpath: primary.dbpath, noReplSet: true, noCleanData: true});

    assert.eq(primaryStandalone.getDB('config').clusterParameters.countDocuments(
                  {_id: 'changeStreamOptions'}),
              1);

    MongoRunner.stopMongod(primaryStandalone);

    replicaSet.startSet({restart: true});
    replicaSet.stopSet();
}
})();