public function testMerge()
{
$col = new MessageCollection();
$col->add(new Message('a'));
$col2 = new MessageCollection();
$col2->add(new Message('b'));
$col->merge($col2);
$this->assertEquals(array('a', 'b'), array_keys($col->all()));
}
/**
* @param MessageCollection $domain
*/
public function merge(MessageCollection $domain)
{
foreach ($domain->all() as $id => $message) {
$this->add($message);
}
}
