+test_expect_success 'Accumulate with new tags' \
+ 'notmuch restore --input=dump.expected &&
+ notmuch restore --accumulate --input=dump-ABC_DEF.expected &&
+ notmuch dump > OUTPUT.$test_count &&
+ notmuch restore --input=dump.expected &&
+ test_cmp dump-ABC_DEF.expected OUTPUT.$test_count'
+