--TEST--
MongoDB\Driver\WriteConcern construction (journaling with unacknowledged w)
--FILE--
<?php

require_once __DIR__ . '/../utils/basic.inc';

echo throws(function() {
    new MongoDB\Driver\WriteConcern(0, 0, true);
}, 'MongoDB\Driver\Exception\InvalidArgumentException'), "\n";

?>
===DONE===
<?php exit(0); ?>
--EXPECT--
OK: Got MongoDB\Driver\Exception\InvalidArgumentException
Cannot enable journaling when using w = 0
===DONE===