React\Tests\HttpClient\RequestTest::multivalueHeader PHP Метод

    public function multivalueHeader()
    {
        $requestData = new RequestData('GET', 'http://www.example.com');
        $request = new Request($this->connector, $requestData);
        $this->successfulConnectionMock();
        $response = $this->response;
        $response->expects($this->at(0))->method('on')->with('end', $this->anything());
        $response->expects($this->at(1))->method('on')->with('error', $this->anything())->will($this->returnCallback(function ($event, $cb) use(&$errorCallback) {
            $errorCallback = $cb;
        }));
        $factory = $this->createCallableMock();
        $factory->expects($this->once())->method('__invoke')->with('HTTP', '1.0', '200', 'OK', array('Content-Type' => 'text/plain', 'X-Xss-Protection' => '1; mode=block', 'Cache-Control' => 'public, must-revalidate, max-age=0'))->will($this->returnValue($response));
        $request->setResponseFactory($factory);
        $request->end();
        $request->handleData("HTTP/1.0 200 OK\r\n");
        $request->handleData("Content-Type: text/plain\r\n");
        $request->handleData("X-Xss-Protection:1; mode=block\r\n");
        $request->handleData("Cache-Control:public, must-revalidate, max-age=0\r\n");
        $request->handleData("\r\nbody");
        $this->assertNotNull($errorCallback);
        call_user_func($errorCallback, new \Exception('test'));
    }