/**
* @covers Guzzle\Http\Plugin\BatchQueuePlugin::onRequestCreate
* @covers Guzzle\Http\Plugin\BatchQueuePlugin::addRequest
* @covers Guzzle\Http\Plugin\BatchQueuePlugin::onRequestBeforeSend
*/
public function testWorksUsingEvents()
{
// Queue up some test responses
$this->getServer()->flush();
$this->getServer()->enqueue(array(new Response(200), new Response(200), new Response(200)));
$plugin = new BatchQueuePlugin(2);
$client = new Client($this->getServer()->getUrl());
$client->getEventDispatcher()->addSubscriber($plugin);
$client->get('/');
$client->get('/');
// Ensure that the requests were sent implicitly
$this->assertEquals(0, count($plugin));
$this->assertEquals(2, count($this->getServer()->getReceivedRequests()));
// Add a single request and ensure that it is in queue and not sent
$client->get('/');
$this->assertEquals(1, count($plugin));
$this->assertEquals(2, count($this->getServer()->getReceivedRequests()));
// Explicitly flush the queued requests
$client->dispatch('flush');
$this->assertEquals(0, count($plugin));
$this->assertEquals(3, count($this->getServer()->getReceivedRequests()));
}