function testSelect()
{
$pipe = IO::pipe();
$selector = new Selector();
$selector->register($pipe[1], 'r');
$pipe[0]->puts("Hello World");
list($r) = $selector->select(0);
$this->assertEquals(1, count($r));
$r[0]->gets();
$selector->unregister($pipe[1]);
$pipe[0]->puts("Hello World");
list($r) = $selector->select(0);
$this->assertEquals(0, count($r));
}
