mongodb/jstests/noPassthrough/apply_ops_overwrite_admin_system_version.js

(function() {
    "use strict";
    load("jstests/libs/feature_compatibility_version.js");
    var standalone = MongoRunner.runMongod();
    var adminDB = standalone.getDB("admin");

    // Get the uuid of the original admin.system.version.
    var res = adminDB.runCommand({listCollections: 1, filter: {name: "system.version"}});
    assert.commandWorked(res, "failed to list collections");
    assert.eq(1, res.cursor.firstBatch.length);
    var originalUUID = res.cursor.firstBatch[0].info.uuid;
    var newUUID = UUID();

    // Create new collection, insert new FCV document and then delete the
    // original collection.
    var createNewAdminSystemVersionCollection =
        {op: "c", ns: "admin.$cmd", ui: newUUID, o: {create: "system.version"}};
    var insertFCVDocument = {
        op: "i",
        ns: "admin.system.version",
        o: {_id: "featureCompatibilityVersion", version: latestFCV}
    };
    var dropOriginalAdminSystemVersionCollection =
        {op: "c", ns: "admin.$cmd", ui: originalUUID, o: {drop: "admin.tmp_system_version"}};
    var cmd = {
        applyOps: [
            createNewAdminSystemVersionCollection,
            insertFCVDocument,
            dropOriginalAdminSystemVersionCollection
        ]
    };
    assert.commandWorked(adminDB.runCommand(cmd), "failed command " + tojson(cmd));

    // Now admin.system.version is overwritten with the new entry.
    res = adminDB.runCommand({listCollections: 1, filter: {name: "system.version"}});
    assert.commandWorked(res, "failed to list collections");
    assert.eq(1, res.cursor.firstBatch.length);
    assert.eq(newUUID, res.cursor.firstBatch[0].info.uuid);

    MongoRunner.stopMongod(standalone);
})();