test: add regression test for n_m_maildir_flags_to_tags

This function currently catches at least the obvious Xapian exceptions
and we want to keep it that way.

diff --git a/test/T560-lib-error.sh b/test/T560-lib-error.sh
index 84ea6ccfab26026dcb96eb0a9b0ee551d92aadac..2aee132b5d4b940278029abb51aad642ebe55a40 100755 (executable)
--- a/test/T560-lib-error.sh
+++ b/test/T560-lib-error.sh
@@ -566,4 +566,20 @@ cat <<EOF > EXPECTED
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
+test_begin_subtest "Handle converting maildir flags to tags with closed db"
+cat c_head2 - c_tail <<'EOF' | test_C ${MAIL_DIR}
+    {
+        notmuch_status_t status;
+        status = notmuch_message_maildir_flags_to_tags (message);
+        printf("%d\n%d\n", message != NULL,  status == NOTMUCH_STATUS_XAPIAN_EXCEPTION);
+    }
+EOF
+cat <<EOF > EXPECTED
+== stdout ==
+1
+1
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
 test_done