Guzzle:访问历史中间件中上载的文件

我正在尝试访问Guzzle(v6)历史中间件中上载的文件。

我的实际代码收到一个请求(因此使用 ServerRequestInterface ),然后使用Guzzle将请求发送到其他位置。

我试图通过这一层测试上传的文件,但我似乎无法在Guzzle中间件返回的请求对象中访问它们。

示例代码:

<?php


use GuzzleHttp\Client;
use GuzzleHttp\Handler\MockHandler;
use GuzzleHttp\HandlerStack;
use GuzzleHttp\Middleware;
use GuzzleHttp\Psr7\ServerRequest;
use GuzzleHttp\Psr7\UploadedFile;

class DoNotCommitTest extends \PHPUnit\Framework\TestCase
{
    public function testUploads()
    {
        $request = new ServerRequest('GET', 'http://example.com/bla');

        $file = new UploadedFile('test', 100, \UPLOAD_ERR_OK);

        $request = $request->withUploadedFiles([$file]);
        $this->assertCount(1, $request->getUploadedFiles());

        // Mock Guzzle request, assert on the request it 'sent'

        $mock = new MockHandler([
            function (ServerRequest $request, array $options) {
                // This fails...
                $this->assertCount(1, $request->getUploadedFiles());
            }
        ]);

        $historyContainer = [];
        $history = Middleware::history($historyContainer);

        $handler = HandlerStack::create($mock);
        $handler->push($history);

        $client = new Client(['handler' => $handler]);

        $client->send($request);
    }
}