mongo/jstests/core/shell_connection_strings.js

// Test mongo shell connect strings.
// @tags: [
//   uses_multiple_connections,
// ]
(function() {
'use strict';

const mongod = new MongoURI(db.getMongo().host).servers[0];
const host = mongod.host;
const port = mongod.port;

function testConnect(ok, ...args) {
    const exitCode = runMongoProgram('mongo', '--eval', ';', ...args);
    if (ok) {
        assert.eq(exitCode, 0, "failed to connect with `" + args.join(' ') + "`");
    } else {
        assert.neq(exitCode, 0, "unexpectedly succeeded connecting with `" + args.join(' ') + "`");
    }
}

testConnect(true, `${host}:${port}`);
testConnect(true, `${host}:${port}/test`);
testConnect(true, `${host}:${port}/admin`);
testConnect(true, host, '--port', port);
testConnect(true, '--host', host, '--port', port, 'test');
testConnect(true, '--host', host, '--port', port, 'admin');
testConnect(true, `mongodb://${host}:${port}/test`);
testConnect(true, `mongodb://${host}:${port}/test?connectTimeoutMS=10000`);

// if a full URI is provided, you cannot also specify host or port
testConnect(false, `${host}/test`, '--port', port);
testConnect(false, `mongodb://${host}:${port}/test`, '--port', port);
testConnect(false, `mongodb://${host}:${port}/test`, '--host', host);
testConnect(false, `mongodb://${host}:${port}/test`, '--host', host, '--port', port);
})();