<?php declare(strict_types=1); namespace GraphQL\Tests; use GraphQL\Utils\Utils; use InvalidArgumentException; use PHPUnit\Framework\TestCase; use stdClass; class UtilsTest extends TestCase { public function testAssignThrowsExceptionOnMissingRequiredKey() : void { $object = new stdClass(); $object->requiredKey = 'value'; $this->expectException(InvalidArgumentException::class); $this->expectExceptionMessage('Key requiredKey is expected to be set and not to be null'); Utils::assign($object, [], ['requiredKey']); } }