// This test ensures that just attempting to read from a non-existent database or collection won't
// cause entries to be created in the catalog.
import {ShardingTest} from "jstests/libs/shardingtest.js";

let shardingTest = new ShardingTest({name: "read_does_not_create_namespaces", shards: 1});
var db = shardingTest.getDB("NonExistentDB");

assert.isnull(db.nonExistentColl.findOne({}));

// Neither the database nor the collection should have been created
assert.isnull(shardingTest.getDB("config").databases.findOne({_id: "NonExistentDB"}));
assert.eq(-1, shardingTest.shard0.getDBNames().indexOf("NonExistentDB"));

shardingTest.stop();