/**
* Test connecting and disconnecting two pipes.
*/
public function testConnectingAndDisconnectingTwoPipes()
{
// create two pipes
$pipe1 = new Pipe();
$pipe2 = new Pipe();
// connect them
$success = $pipe1->connect($pipe2);
// test assertions
$this->assertTrue($pipe1 instanceof Pipe, "Expecting \$pipe1 instanceof Pipe");
$this->assertTrue($pipe2 instanceof Pipe, "Expecting \$pipe2 instanceof Pipe");
$this->assertTrue($success, "Expecting connected pipe1 to pipe2");
// disconnect pipe 2 from pipe 1
$disconnectedPipe = $pipe1->disconnect();
$this->assertTrue($disconnectedPipe === $pipe2, "Expecting disconnected pipe2 from pipe1");
}
