Piwik\Plugins\API\Renderer\Json::renderSuccess PHP Method

    public function renderSuccess($message)
    {
        $result = json_encode(array('result' => 'success', 'message' => $message));
        return $this->applyJsonpIfNeeded($result);
    }

 public function test_renderSuccess_shouldIncludeMessage()
 {
     $response = $this->jsonBuilder->renderSuccess('ok');
     $this->assertEquals('{"result":"success","message":"ok"}', $response);
     $this->assertEquals((array) array('result' => 'success', 'message' => 'ok'), json_decode($response, true));
     $this->assertNoJsonError($response);
 }