/**
* Closes a connected piped output stream. A listener is registered at
* 'close.notify.before', so when the listener is called, we know the
* downstream is notified.
*/
public function testClose()
{
// Initializes a piped input stream.
$downstream = new PipedInputStream();
// Initializes a piped output stream.
$output = new PipedOutputStream($downstream);
// Initializes an event dispatcher.
$dispatcher = new EventDispatcher();
// Initializes the listener.
$listener = [new MarkerListener(), 'mark'];
// Adds the dispacher and listener to the piped output stream.
$output->setEventDispatcher($dispatcher)->addListener($output::EVENT_CLOSE_NOTIFY_BEFORE, $listener);
// Closes the piped output stream.
$output->close();
// Asserts the stream has been closed.
$this->assertTrue($output->isClosed());
// Asserts notify() method of the piped input stream has been called.
$this->assertSame($listener[0], $listener[0]->markers[0]);
}
