esphome/tests/integration/fixtures/safe_mode_loop_runs.yaml

esphome:
  name: safe-mode-loop-runs

host:

logger:

safe_mode:
  num_attempts: 10
  on_safe_mode:
    - lambda: |-
        // Spawn a detached thread that logs a unique marker. The
        // non-main-thread log goes through the task log buffer, which
        // is only drained by Logger::loop(). If looping components
        // weren't initialized (the bug fixed in #16269), the buffer is
        // never read and the marker never reaches the console.
        struct MarkerThread {
          static void *thread_func(void *) {
            ESP_LOGI("safe_mode_test", "looping component ran in safe mode");
            return nullptr;
          }
        };
        pthread_t t;
        pthread_create(&t, nullptr, MarkerThread::thread_func, nullptr);
        pthread_detach(t);