notmuch dump > dump.actual &&
test_cmp dump.expected dump.actual'
-test_expect_success 'Restore with nothing to do, II' \
+test_expect_success 'Accumulate with existing tags' \
'notmuch restore --accumulate --input=dump.expected &&
notmuch dump > dump.actual &&
test_cmp dump.expected dump.actual'
-test_expect_success 'Restore with nothing to do, III' \
+test_expect_success 'Accumulate with no tags' \
'notmuch restore --accumulate < clear.expected &&
notmuch dump > dump.actual &&
test_cmp dump.expected dump.actual'
+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'
+
# notmuch restore currently only considers the first argument.
test_expect_success 'Invalid restore invocation' \
'test_must_fail notmuch restore --input=dump.expected another_one'