Elep

<?php

namespace MongoDB\Tests\Operation;

use MongoDB\Operation\CreateCollection;
use MongoDB\Tests\CommandObserver;
use function version_compare;

class CreateCollectionFunctionalTest extends FunctionalTestCase
{
    public function testDefaultWriteConcernIsOmitted()
    {
        (new CommandObserver())->observe(
            function () {
                $operation = new CreateCollection(
                    $this->getDatabaseName(),
                    $this->getCollectionName(),
                    ['writeConcern' => $this->createDefaultWriteConcern()]
                );

$operation->execute($this->getPrimaryServer());
            },
            function (array $event) {
                $this->assertObjectNotHasAttribute('writeConcern', $event['started']->getCommand());
            }
        );
    }

public function testSessionOption()
    {
        if (version_compare($this->getServerVersion(), '3.6.0', '<')) {
            $this->markTestSkipped('Sessions are not supported');
        }

(new CommandObserver())->observe(
            function () {
                $operation = new CreateCollection(
                    $this->getDatabaseName(),
                    $this->getCollectionName(),
                    ['session' => $this->createSession()]
                );

$operation->execute($this->getPrimaryServer());
            },
            function (array $event) {
                $this->assertObjectHasAttribute('lsid', $event['started']->getCommand());
            }
        );
    }
}