fix: route celery tasks to consumed queue

tests/unit/test_deployment_configuration.py

@@ -1,6 +1,7 @@
 from pathlib import Path
 
 import yaml
+from django.conf import settings
 
 ROOT = Path(__file__).resolve().parents[2]
 
@@ -26,6 +27,15 @@ def test_runtime_is_compatible_with_read_only_container() -> None:
     assert "for required_host in 127.0.0.1 localhost" in deploy_script
 
 
+def test_celery_default_queue_is_consumed_by_worker() -> None:
+    compose = yaml.safe_load((ROOT / "docker-compose.yml").read_text(encoding="utf-8"))
+    worker_command = compose["services"]["worker"]["command"]
+
+    assert settings.CELERY_TASK_DEFAULT_QUEUE == "default"
+    queue_index = worker_command.index("-Q") + 1
+    assert "default" in worker_command[queue_index].split(",")
+
+
 def test_deployment_examples_use_per_platform_mailbox_configuration() -> None:
     required_keys = {
         "MAILBOX_CREDENTIAL_KEYS",