Split all the e2e tests in their own files

Some duplication is avoided, but most importantly: it’s much much cleaner,
easier to find, functions have been cleaned up (functools.partial usages are
now hidden), etc.

tests/end_to_end/scenarios/get_irc_connection_info.py

@@ -0,0 +1,17 @@
+from scenarios import *
+
+scenario = (
+    sequences.handshake(),
+
+    send_stanza("<iq type='set' id='command1' from='{jid_one}/{resource_one}' to='{irc_server_one}'><command xmlns='http://jabber.org/protocol/commands' node='get-irc-connection-info' action='execute' /></iq>"),
+    expect_stanza("/iq/commands:command/commands:note[text()='You are not connected to the IRC server irc.localhost']"),
+
+    send_stanza("<presence from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}/{nick_one}' />"),
+    sequences.connection("irc.localhost", '{jid_one}/{resource_one}'),
+    expect_stanza("/message"),
+    expect_stanza("/presence"),
+    expect_stanza("/message"),
+
+    send_stanza("<iq type='set' id='command2' from='{jid_one}/{resource_one}' to='{irc_server_one}'><command xmlns='http://jabber.org/protocol/commands' node='get-irc-connection-info' action='execute' /></iq>"),
+    expect_stanza(r"/iq/commands:command/commands:note[re:test(text(), 'Connected to IRC server irc.localhost on port 6667 since \d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d \(\d+ seconds ago\)\.\n#foo from 1 resource: {resource_one}.*')]"),
+)