public function testExport()
{
$this->expectOutputRegex('/user-[0-9]@example.com/', 'user-[0-9]@example.com が含まれる CSV が出力されるか');
$this->client->request('POST', $this->app->path('admin_customer_export'), array('admin_search_customer' => array('_token' => 'dummy')));
}