用 Mockery 模擬 Guzzle Response

紀錄一下Mockey 使用的方法

class MessageTest extends TestCase 
{
  public function testGetMessage()
  {
    // 先做一個假的 client
    $client = \Mockery::mock('GuzzleHttp\Client');
    $client->shouldReceive('request')->andReturn('Yo');
    $message = new Message();
    // 把mock的client放進要測試的class內
    $message->setClient($client);
    ...
  }
}
class Message 
{
  private $client;
  public function setClient($client)
  {
    return $this->client = $client;
  }
  public function getMessage($id)
  {
    ...
    $response = $this->client->request('GET', $url, [
      'headers' => $header, 
      'query' => $query
    ]);
    ...
  }
}

假如是返回 Stream 也可以使用下面的方法來 mock

// 需要 use 這兩個
use GuzzleHttp\Psr7;
use GuzzleHttp\Psr7\Response;
class ImageTest extends TestCase 
{
  public function testGetImageList()
  {
    $data = [
      'id' => '135',
      'url' => 'https://path/file.jpg',
      'createdAt' => '2010-01-01 08:00:00',
    ];
    $stream = Psr7\stream_for(json_encode($data));
    $response = new Response(200, [
      'Content-Type' => 'application/json;charset=utf-8',
      'Content-Length' => '200' // 我沒有算上面有多少字
    ], $stream);
    // 先做一個假的 client
    $client = \Mockery::mock('GuzzleHttp\Client');
    $client->shouldReceive('request')->andReturn($response);
    $image= new Image();
    // 把mock的client放進要測試的class內
    $image->setClient($client);
    ...
  }
  // 如果想返回一張圖片
  public function testGetImage()
  {
    // 讀取在 public 路徑下的一張圖片 dog.jpg
    $img = fopen(public_path('dog.'), 'r');
    $stream = stream_get_contents($img);
    fclose($img);
    $response = new Response(200, [
      'Content-Type' => 'application/json;charset=utf-8',
      'Content-Length' => '30304'
    ], $stream);
    // 下面就都一樣
    $client = \Mockery::mock('GuzzleHttp\Client');
    $client->shouldReceive('request')->andReturn($response);
    $image= new Image();
    $image->setClient($client);
    ...
  }
}

參考資料

https://stackoverflow.com/questions/27506568/guzzlephp-mock-response-content