diff --git a/tests/test_chat_attachment.c b/tests/test_chat_attachment.c
index b6efcd83..816d4516 100644
--- a/tests/test_chat_attachment.c
+++ b/tests/test_chat_attachment.c
@@ -158,7 +158,7 @@ static void source_preserved(struct fixture* f) {
     assert(fgetc(file) == EOF && !fclose(file));
 }
 
-static int send(struct fixture* f) {
+static int send_attachment(struct fixture* f) {
     struct attachment_info info = {.kind = ATTACHMENT_FILE, .name = "source.bin"}; uint8_t reply[32] = {0};
     return chat_attachment_send(f->inst, f->channel, f->source, &info, "application/octet-stream", reply, 71);
 }
@@ -174,7 +174,7 @@ static void unchanged(struct fixture* f) {
 }
 
 static void publish(struct fixture* f) {
-    assert(!send(f) && f->submissions == 1); f->rows++;
+    assert(!send_attachment(f) && f->submissions == 1); f->rows++;
     for (unsigned poll = 0; poll < 2000 && !f->events; poll++) uasync_poll(f->ua, 10);
     assert(f->events == 1 && f->success == 1 && rows(f) == f->rows && ma_file_size(f->source) < 0);
     committed(f, 1); uasync_poll(f->ua, 0); assert(f->events == 1);
@@ -211,7 +211,7 @@ static void test_sql_faults(void) {
     struct fixture f; setup(&f);
     for (enum fault stage = BEGIN; stage < FAULT_COUNT; stage++) {
         source(&f); unsigned before = 0, after = 0; assert(!ma_dir_walk(f.directory, count_files, &before));
-        fault = stage; assert(send(&f) == -1); unchanged(&f);
+        fault = stage; assert(send_attachment(&f) == -1); unchanged(&f);
         assert(!ma_dir_walk(f.directory, count_files, &after) && before == after);
         source(&f); publish(&f);
     }
@@ -224,18 +224,18 @@ static int veto_commit(void* arg) { (*(unsigned*)arg)++; return 1; }
 static void test_sql_controls(void) {
     struct fixture f; setup(&f); unsigned vetoes = 0;
     source(&f); sqlite3_commit_hook(f.inst->topo_sqlite_db, veto_commit, &vetoes);
-    assert(send(&f) == -1 && vetoes == 1); sqlite3_commit_hook(f.inst->topo_sqlite_db, NULL, NULL); unchanged(&f);
+    assert(send_attachment(&f) == -1 && vetoes == 1); sqlite3_commit_hook(f.inst->topo_sqlite_db, NULL, NULL); unchanged(&f);
     source(&f); publish(&f);
     const char* triggers[] = {
         "CREATE TRIGGER reject_preparation BEFORE INSERT ON attachment_keys BEGIN SELECT RAISE(ABORT,'test insert failure'); END",
         "CREATE TRIGGER reject_preparation BEFORE INSERT ON attachment_keys BEGIN SELECT RAISE(IGNORE); END"
     };
     for (unsigned i = 0; i < 2; i++) {
-        source(&f); sql(f.inst->topo_sqlite_db, triggers[i]); assert(send(&f) == -1); unchanged(&f);
+        source(&f); sql(f.inst->topo_sqlite_db, triggers[i]); assert(send_attachment(&f) == -1); unchanged(&f);
         sql(f.inst->topo_sqlite_db, "DROP TRIGGER reject_preparation"); source(&f); publish(&f);
     }
     source(&f); sql(f.inst->topo_sqlite_db, "BEGIN; UPDATE attachment_keys SET ready=7 WHERE channel='900'");
-    assert(send(&f) == -1 && !f.events && !f.submissions && !sqlite3_get_autocommit(f.inst->topo_sqlite_db));
+    assert(send_attachment(&f) == -1 && !f.events && !f.submissions && !sqlite3_get_autocommit(f.inst->topo_sqlite_db));
     source_preserved(&f); assert(rows(&f) == f.rows);
     sqlite3_stmt* st = NULL;
     assert(sqlite3_prepare_v2(f.inst->topo_sqlite_db, "SELECT ready FROM attachment_keys WHERE channel='900'", -1, &st, NULL) == SQLITE_OK);
@@ -249,7 +249,7 @@ static void test_sql_controls(void) {
 /* Submit может вызвать done до возврата send; SQL уже виден reader, результат остаётся единственным. */
 static void test_inline_failure(void) {
     struct fixture f; setup(&f); source(&f); fail_submit = 1;
-    assert(!send(&f) && !fail_submit && f.submissions == 1 && f.events == 1 && !f.success);
+    assert(!send_attachment(&f) && !fail_submit && f.submissions == 1 && f.events == 1 && !f.success);
     assert(rows(&f) == f.rows + 1 && ma_file_size(f.source) < 0); committed(&f, 0);
     uasync_poll(f.ua, 0); assert(f.events == 1); cleanup(&f);
     DEBUG_INFO(DEBUG_CATEGORY_MEDIA, "PASS attachment: inline submit failure after commit transfers source and reports exactly once");
@@ -257,17 +257,18 @@ static void test_inline_failure(void) {
 
 static void fail_from_callback(void* arg) {
     struct fixture* f = arg; fault = COMMIT; fail_rollback = 1;
-    assert(send(f) == -1 && !fail_rollback && !f->inst->running && !f->submissions && !f->events);
+    assert(send_attachment(f) == -1 && !fail_rollback && !f->inst->running && !f->submissions && !f->events);
     assert(!sqlite3_get_autocommit(f->inst->topo_sqlite_db)); source_preserved(f);
 }
 
 /* Callback только запрашивает stop; владелец после poll уничтожает живое ядро и закрывает БД. */
 static void test_rollback_failure(void) {
     struct fixture f; setup(&f); source(&f);
-    assert(uasync_post(f.ua, fail_from_callback, &f) == ERR_OK);
+    struct posted_task* task = u_calloc(1, sizeof(*task)); assert(task);
+    task->callback = fail_from_callback; task->arg = &f; uasync_post_reserved(f.ua, task);
     while (f.inst->running) uasync_poll(f.ua, 10);
     assert(f.inst->chat_started && f.inst->chat_core && rows(&f) == f.rows);
-    assert(send(&f) == -1 && !f.events && !f.submissions); source_preserved(&f);
+    assert(send_attachment(&f) == -1 && !f.events && !f.submissions); source_preserved(&f);
     chat_event_set_handler(f.inst, NULL); utun_instance_destroy(f.inst); f.inst = NULL;
     assert(rows(&f) == f.rows); uasync_poll(f.ua, 0);
     assert(sqlite3_close(f.reader) == SQLITE_OK); uasync_destroy(f.ua, 0); active = NULL;