test_begin_subtest "database upgrade from format version 1"
output=$(notmuch new | sed -e 's/^Backing up tags to .*$/Backing up tags to FILENAME/')
test_expect_equal "$output" "\
test_begin_subtest "database upgrade from format version 1"
output=$(notmuch new | sed -e 's/^Backing up tags to .*$/Backing up tags to FILENAME/')
test_expect_equal "$output" "\