Alcaeus\MongoDbAdapter\Tests\Mongo\MongoCursorTest::getBasicCheckCallback PHP Method

        function getBasicCheckCallback($expected, $optionName)
        {
            return function ($value) use($expected, $optionName) {
                return is_array($value) && array_key_exists($optionName, $value) && $value[$optionName] == $expected;
            };
        }