GuzzleHttp\Tests\Psr7\StreamDecoratorTraitTest::setUp PHP Метод

    public function setUp()
    {
        $this->c = fopen('php://temp', 'r+');
        fwrite($this->c, 'foo');
        fseek($this->c, 0);
        $this->a = Psr7\stream_for($this->c);
        $this->b = new Str($this->a);
    }