php - 使用 PHPUnit 测试 Slim 3 路由时 $response->getBody() 为空

Question

我使用以下方法在我的 PHPUnit 测试中分派(dispatch) Slim 应用程序的路由:

protected function dispatch($path, $method='GET', $data=array())
{
    // Prepare a mock environment
    $env = Environment::mock(array(
        'REQUEST_URI' => $path,
        'REQUEST_METHOD' => $method,
    ));

    // Prepare request and response objects
    $uri = Uri::createFromEnvironment($env);
    $headers = Headers::createFromEnvironment($env);
    $cookies = [];
    $serverParams = $env->all();
    $body = new RequestBody();

    // create request, and set params
    $req = new Request($method, $uri, $headers, $cookies, $serverParams, $body);
    if (!empty($data))
        $req = $req->withParsedBody($data);

    $res = new Response();

    $this->headers = $headers;
    $this->request = $req;
    $this->response = call_user_func_array($this->app, array($req, $res));
}

例如:

public function testGetProducts()
{
    $this->dispatch('/products');

    $this->assertEquals(200, $this->response->getStatusCode());
}

但是，尽管响应中包含状态代码和 header 之类的内容，但 (string) $response->getBody() 是空的，因此我无法检查元素是否存在HTML。当我在浏览器中运行相同的路由时，我得到了预期的 HTML 输出。另外，如果我 echo $response->getBody(); exit; 然后在浏览器中查看输出，我看到了 HTML 正文。有什么原因，在我的实现中，我没有在我的测试中看到这个？ (在 CLI 中，我猜环境如此不同)

Answer 1

$response->getBody() 将是空的，因为您已经设置了已解析的正文。将它作为字符串放入 RequestBody 中会更容易，其方式与它通过网络传入时的设置方式相同。

也就是像这样:

protected function dispatch($path, $method='GET', $data=array())
{
    // Prepare a mock environment
    $env = Environment::mock(array(
        'REQUEST_URI' => $path,
        'REQUEST_METHOD' => $method,
        'CONTENT_TYPE' => 'application/json',
    ));

    // Prepare request and response objects
    $uri = Uri::createFromEnvironment($env);
    $headers = Headers::createFromEnvironment($env);
    $cookies = [];
    $serverParams = $env->all();
    $body = new RequestBody();
    if (!empty($data)) {
        $body->write(json_encode($data));
    }

    // create request, and set params
    $req = new Request($method, $uri, $headers, $cookies, $serverParams, $body);
    $res = new Response();

    $this->headers = $headers;
    $this->request = $req;
    $this->response = call_user_func_array($this->app, array($req, $res));
}