-notmuch config set database.path "/canonical/path"
-output=$(notmuch config list | notmuch_built_with_sanitize)
-test_expect_equal "$output" "\
-database.path=/canonical/path
+notmuch config list 2>&1 | notmuch_config_sanitize > OUTPUT
+cat <<EOF > EXPECTED
+Error opening database at MAIL_DIR/.notmuch: No such file or directory
+database.path=MAIL_DIR