public function testIteratorImplementation()
{
$this->assertInstanceOf('IteratorAggregate', $this->instance, 'be sure that PHP handle getIterator');
$message = $this->getMock('Qu\\Message\\MessageInterface');
$this->instance->addMessage($message)->addMessage($message);
$iterator = $this->instance->getIterator();
$this->assertSame([$message, $message], $iterator->getArrayCopy(), 'iterator contains messages');
}
