X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=test%2FT530-upgrade.sh;h=6b42a690fa9002573ef9639167d757987223281b;hp=7d5d5aa88e0150af3b95897143cc760b8c445c1f;hb=4e2c351c588ad74f4800ca0344232be90387c54a;hpb=b8327ab483a3f018b9c7c72502f2b30f8a80ccbe

diff --git a/test/T530-upgrade.sh b/test/T530-upgrade.sh
index 7d5d5aa8..6b42a690 100755
--- a/test/T530-upgrade.sh
+++ b/test/T530-upgrade.sh
@@ -33,7 +33,7 @@ test_expect_equal "$output" "\
 Welcome to a new version of notmuch! Your database will now be upgraded.
 This process is safe to interrupt.
 Backing up tags to FILENAME
-Your notmuch database has now been upgraded to database format version 2.
+Your notmuch database has now been upgraded.
 No new mail."
 
 test_begin_subtest "tag backup matches pre-upgrade dump"
@@ -116,4 +116,25 @@ MAIL_DIR/bar/new/21:2,
 MAIL_DIR/bar/new/22:2,
 MAIL_DIR/cur/51:2,"
 
+# Ghost messages are difficult to test since they're nearly invisible.
+# However, if the upgrade works correctly, the ghost message should
+# retain the right thread ID even if all of the original messages in
+# the thread are deleted.  That's what we test.  This won't detect if
+# the upgrade just plain didn't happen, but it should detect if
+# something went wrong.
+test_begin_subtest "ghost message retains thread ID"
+# Upgrade database
+notmuch new
+# Get thread ID of real message
+thread=$(notmuch search --output=threads id:4EFC743A.3060609@april.org)
+# Delete all real messages in that thread
+rm $(notmuch search --output=files $thread)
+notmuch new
+# "Deliver" ghost message
+add_message '[subject]=Ghost' '[id]=4EFC3931.6030007@april.org'
+# If the ghost upgrade worked, the new message should be attached to
+# the existing thread ID.
+nthread=$(notmuch search --output=threads id:4EFC3931.6030007@april.org)
+test_expect_equal "$thread" "$nthread"
+
 test_done