test: Check for replies obeying lifetime guarantees

The test attempts to check that a message coming from a thread outlives its messages list and gets destroyed together with the thread.

test/T720-lib-lifetime.sh

@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2018 rhn
+#
+
+
+test_description="Lifetime constraints for library"
+
+. $(dirname "$0")/test-lib.sh || exit 1
+
+add_email_corpus threading
+
+test_begin_subtest "building database"
+test_expect_success "NOTMUCH_NEW"
+
+test_begin_subtest "Message outlives parent Messages from replies"
+
+test_C ${MAIL_DIR} <<'EOF'
+#include <stdio.h>
+#include <stdlib.h>
+#include <notmuch.h>
+int main (int argc, char** argv)
+{
+   notmuch_database_t *db;
+   notmuch_status_t stat;
+   stat = notmuch_database_open (argv[1], NOTMUCH_DATABASE_MODE_READ_ONLY, &db);
+   if (stat != NOTMUCH_STATUS_SUCCESS) {
+     fprintf (stderr, "error opening database: %d\n", stat);
+     exit (1);
+   }
+
+   notmuch_query_t *query = notmuch_query_create (db, "id:B00-root@example.org");
+   notmuch_threads_t *threads;
+
+   stat = notmuch_query_search_threads (query, &threads);
+   if (stat != NOTMUCH_STATUS_SUCCESS) {
+     fprintf (stderr, "error querying threads: %d\n", stat);
+     exit (1);
+   }
+
+   if (!notmuch_threads_valid (threads)) {
+     fprintf (stderr, "invalid threads");
+     exit (1);
+   }
+
+   notmuch_thread_t *thread = notmuch_threads_get (threads);
+   notmuch_messages_t *messages = notmuch_thread_get_messages (thread);
+
+   if (!notmuch_messages_valid (messages)) {
+     fprintf (stderr, "invalid messages");
+     exit (1);
+   }
+
+   notmuch_message_t *message = notmuch_messages_get (messages);
+   notmuch_messages_t *replies = notmuch_message_get_replies (message);
+   if (!notmuch_messages_valid (replies)) {
+     fprintf (stderr, "invalid replies");
+     exit (1);
+   }
+
+   notmuch_message_t *reply = notmuch_messages_get (replies);
+
+   notmuch_messages_destroy (replies); // the reply should not get destroyed here
+   notmuch_message_destroy (message);
+   notmuch_messages_destroy (messages); // nor here
+
+   const char *mid = notmuch_message_get_message_id (reply); // should not crash when accessing
+   fprintf (stdout, "Reply id: %s\n", mid);
+   notmuch_message_destroy (reply);
+   notmuch_thread_destroy (thread); // this destroys the reply
+   notmuch_threads_destroy (threads);
+   notmuch_query_destroy (query);
+   notmuch_database_destroy (db);
+}
+EOF
+cat <<'EOF' >EXPECTED
+== stdout ==
+Reply id: B01-child@example.org
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_done