def test_new_tags_are_added_to_mailbox(self):
leap_flags = ['\\Deleted', 'tag_custom_one', 'tag_custom_two']
leap_mailbox_mock = test_helper.leap_mailbox(leap_flags=leap_flags)
mailbox = PixelatedMailbox(leap_mailbox_mock)
tags = [Tag('custom_one'), Tag('custom_three')]
mailbox.update_tags(tags)
expected = set(('\\Deleted', 'tag_custom_one', 'tag_custom_two', 'tag_custom_three'))
actual_args = set(leap_mailbox_mock.setFlags.call_args[0][0])
self.assertEquals(expected, actual_args)
