public function testAddingFuture()
{
$future1 = new ExecFuture('cat');
$future2 = new ExecFuture('cat');
$iterator = new FutureIterator(array($future1));
$iterator->limit(2);
$results = array();
foreach ($iterator as $future) {
if ($future === $future1) {
$iterator->addFuture($future2);
}
$results[] = $future->resolve();
}
$this->assertEqual(2, count($results));
}