e2e test self invite

tests/end_to_end/__main__.py

@@ -989,6 +989,24 @@ if __name__ == '__main__':
                      partial(expect_stanza,
                              "/iq[@from='#foo%{irc_server_one}/{nick_one}'][@type='result'][@to='{jid_one}/{resource_one}'][@id='second_version']"),
                  ]),
+                Scenario("self_invite",
+                [
+                    handshake_sequence(),
+                    partial(send_stanza,
+                            "<presence from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}/{nick_one}' />"),
+                    connection_sequence("irc.localhost", '{jid_one}/{resource_one}'),
+                    partial(expect_stanza,
+                            "/message/body[text()='Mode #foo [+nt] by {irc_host_one}']"),
+                    partial(expect_stanza,
+                            ("/presence[@to='{jid_one}/{resource_one}'][@from='#foo%{irc_server_one}/{nick_one}']/muc_user:x/muc_user:item[@affiliation='admin'][@role='moderator']",
+                             "/presence/muc_user:x/muc_user:status[@code='110']")
+                            ),
+                    partial(expect_stanza, "/message[@from='#foo%{irc_server_one}'][@type='groupchat']/subject[not(text())]"),
+                    partial(send_stanza,
+                            "<message from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}'><x xmlns='http://jabber.org/protocol/muc#user'><invite to='{nick_one}'/></x></message>"),
+                    partial(expect_stanza,
+                            "/message/body[text()='{nick_one} is already on channel #foo']")
+                ])
     )
 
     failures = 0