/**
* @test
*/
public function connectable_observable_creation()
{
$y = 0;
$s2 = new Subject();
$co2 = new ConnectableObservable(Observable::just(1), $s2);
$co2->subscribe(new CallbackObserver(function ($x) use(&$y) {
$y = $x;
}));
$this->assertNotEquals(1, $y);
$co2->connect();
$this->assertEquals(1, $y);
}
/**
* @param \Rx\ObserverInterface $observer
* @param null $scheduler
* @return \Rx\Disposable\CallbackDisposable
*/
public function subscribe(ObserverInterface $observer, $scheduler = null)
{
$this->count++;
$shouldConnect = $this->count === 1;
$subscription = $this->source->subscribe($observer, $scheduler);
if ($shouldConnect) {
$this->connectableSubscription = $this->source->connect();
}
$isDisposed = false;
return new CallbackDisposable(function () use($subscription, &$isDisposed) {
if ($isDisposed) {
return;
}
$isDisposed = true;
$subscription->dispose();
$this->count--;
if ($this->count === 0) {
$this->connectableSubscription->dispose();
}
});
}