How to retrieve a streamed response (e.g. download a file) with Symfony test client

Question

I am writing functional tests with Symfony2.

I have a controller that calls a getImage() function which streams an image file as follows:

Answer 1

For me didn't work like that. Instead, I used ob_start() before making the request, and after the request i used $content = ob_get_clean() and made asserts on that content.

In test:

    // Enable the output buffer
    ob_start();
    $this->client->request(
        'GET',
        '$url',
        array(),
        array(),
        array('CONTENT_TYPE' => 'application/json')
    );
    // Get the output buffer and clean it
    $content = ob_get_clean();
    $this->assertEquals('my response content', $content);

Maybe this was because my response is a csv file.

In controller:

    $response->headers->set('Content-Type', 'text/csv; charset=utf-8');