public function testChangeOrder()
{
$client = $this->createClient('change_order', $history = new History());
$response = $client->changeOrder(['order_id' => '1-1', 'shipping' => 5.0]);
$this->assertSame('POST', $history->getLastRequest()->getMethod());
$this->assertSame('https://api.discogs.com/marketplace/orders/1-1', $history->getLastRequest()->getUrl());
}