Horde_ActiveSync_Folder_Imap::messages PHP Method

    public function messages()
    {
        return empty($this->_status[self::HIGHESTMODSEQ]) ? array_keys($this->_messages) : $this->_messages;
    }

 public function testModseqUpdate()
 {
     $folder = new Horde_ActiveSync_Folder_Imap('INBOX', Horde_ActiveSync::CLASS_EMAIL);
     $status = array(Horde_ActiveSync_Folder_Imap::UIDVALIDITY => 100, Horde_ActiveSync_Folder_Imap::UIDNEXT => 105, Horde_ActiveSync_Folder_Imap::HIGHESTMODSEQ => 200);
     // Initial state
     $msg_changes = array(100, 101, 102, 103, 104);
     $flag_changes = array(100 => array('read' => 0, 'flagged' => 0), 101 => array('read' => 0, 'flagged' => 0), 102 => array('read' => 0, 'flagged' => 0), 103 => array('read' => 0, 'flagged' => 0), 104 => array('read' => 0, 'flagged' => 0));
     $folder->setChanges($msg_changes, $flag_changes);
     $this->assertEquals($msg_changes, $folder->added());
     $this->assertEquals($flag_changes, $folder->flags());
     $this->assertEquals(array(), $folder->changed());
     $this->assertEquals(array(), $folder->removed());
     $this->assertEquals(array(), $folder->messages());
     $folder->setStatus($status);
     $folder->updateState();
     $this->assertEquals(array(), $folder->added());
     $this->assertEquals(array(), $folder->flags());
     $this->assertEquals(array(), $folder->changed());
     $this->assertEquals(array(), $folder->removed());
     $this->assertEquals($msg_changes, $folder->messages());
     // Now simulate some flag changes and new messages.
     $msg_changes = array(100, 105);
     $flag_changes = array(100 => array('read' => 0, 'flagged' => 1), 105 => array('read' => 1, 'flagged' => 0));
     $folder->setChanges($msg_changes, $flag_changes);
     $this->assertEquals(array(105), $folder->added());
     $this->assertEquals(array(100), $folder->changed());
     $status[Horde_ActiveSync_Folder_Imap::UIDNEXT] = 106;
     $folder->setStatus($status);
     $folder->updateState();
 }