React\Tests\HttpClient\ResponseTest::responseShouldEmitEndEventOnEnd PHP Method

    public function responseShouldEmitEndEventOnEnd()
    {
        $this->stream->expects($this->at(0))->method('on')->with('data', $this->anything());
        $this->stream->expects($this->at(1))->method('on')->with('error', $this->anything());
        $this->stream->expects($this->at(2))->method('on')->with('end', $this->anything());
        $response = new Response($this->stream, 'HTTP', '1.0', '200', 'OK', array('Content-Type' => 'text/plain'));
        $handler = $this->createCallableMock();
        $handler->expects($this->once())->method('__invoke')->with('some data', $this->anything());
        $response->on('data', $handler);
        $handler = $this->createCallableMock();
        $handler->expects($this->once())->method('__invoke')->with(null, $this->isInstanceOf('React\\HttpClient\\Response'));
        $response->on('end', $handler);
        $response->on('close', $this->expectCallableNever());
        $this->stream->expects($this->at(0))->method('close');
        $response->handleData('some data');
        $response->handleEnd();
        $this->assertSame(['Content-Type' => 'text/plain'], $response->getHeaders());
    }