GuzzleHttp\Tests\Psr7\LimitStreamTest::testReturnsNullIfSizeCannotBeDetermined PHP Метод

    public function testReturnsNullIfSizeCannotBeDetermined()
    {
        $a = new FnStream(['getSize' => function () {
            return null;
        }, 'tell' => function () {
            return 0;
        }]);
        $b = new LimitStream($a);
        $this->assertNull($b->getSize());
    }