1 files changed, 43 insertions, 0 deletions
diff --git a/tests/split-set/t b/tests/split-set/t
new file mode 100644
index 0000000..5e8ea52
--- /dev/null
+++ b/tests/split-set/t
@@ -0,0 +1,43 @@
+N=2048
+
+# XXX with COMPRESS=DEFLATE dovecot-imapd 2.3.4 hangs when the command
+# line exceeds 'imap_max_line_length' (or 8192, whichever is smaller)
+# bytes, instead of returning a tagged BAD response.
+# https://dovecot.org/pipermail/dovecot/2019-November/117522.html
+
+# set UIDNEXT to 10^9 so all uids are 10 chars long, otherwise we'd need
+# to add many more messages to obtain large sets
+doveadm -u "local"  mailbox update --min-next-uid 1000000000 "INBOX"
+doveadm -u "remote" mailbox update --min-next-uid 1000000000 "INBOX"
+
+for ((i = 0; i < N; i++)); do
+    u="$(shuf -n1 -e "local" "remote")"
+    sample_message | deliver -u "$u"
+done
+
+interimap_init
+check_mailbox_status "INBOX"
+
+# mark every other message as \Seen on the local server
+for ((i = 0; i < N; i+=2)); do
+    doveadm -u "local" flags add "\\Seen" mailbox "INBOX" $((N-i))
+done
+
+# send the changes to the remote; this results into an UID STORE set
+# representation of size 11*N/2-1, which exceeds $imap_max_line_length
+interimap
+check_mailbox_status "INBOX"
+
+# now expunge every other message on the remote server; this results
+# into large UID STORE and UID EXPUNGE set representation
+for ((i = 0; i < N; i+=2)); do
+    doveadm -u "local" expunge mailbox "INBOX" $((N-i))
+    # add some more messages
+    u="$(shuf -n1 -e "local" "remote")"
+    sample_message | deliver -u "$u"
+done
+
+interimap || error
+check_mailbox_status "INBOX"
+
+# vim: set filetype=sh :