esphome/tests/integration/fixtures/scheduler_defer_fifo_simple.yaml

esphome:
  name: scheduler-defer-fifo-simple

host:

logger:
  level: DEBUG

api:
  services:
    - service: test_set_timeout
      then:
        - lambda: |-
            // Test set_timeout with 0 delay (direct scheduler call)
            static int set_timeout_order = 0;
            static bool set_timeout_passed = true;

            // Reset for this test
            set_timeout_order = 0;
            set_timeout_passed = true;

            ESP_LOGD("defer_test", "Testing set_timeout(0) for FIFO order...");
            for (int i = 0; i < 10; i++) {
              int expected = i;
              App.scheduler.set_timeout((Component*)nullptr, nullptr, 0, [expected]() {
                ESP_LOGD("defer_test", "set_timeout(0) item %d executed, order %d", expected, set_timeout_order);
                if (set_timeout_order != expected) {
                  ESP_LOGE("defer_test", "FIFO violation in set_timeout: expected %d but got execution order %d", expected, set_timeout_order);
                  set_timeout_passed = false;
                }
                set_timeout_order++;

                if (set_timeout_order == 10) {
                  if (set_timeout_passed) {
                    ESP_LOGI("defer_test", "✓ Test PASSED - set_timeout(0) maintains FIFO order");
                    id(test_result)->trigger("passed");
                  } else {
                    ESP_LOGE("defer_test", "✗ Test FAILED - set_timeout(0) executed out of order");
                    id(test_result)->trigger("failed");
                  }
                  id(test_complete)->trigger("test_finished");
                }
              });
            }

            ESP_LOGD("defer_test", "Deferred 10 items using set_timeout(0), waiting for execution...");

    - service: test_defer
      then:
        - lambda: |-
            // Test defer() method (component method)
            static int defer_order = 0;
            static bool defer_passed = true;

            // Reset for this test
            defer_order = 0;
            defer_passed = true;

            ESP_LOGD("defer_test", "Testing defer() for FIFO order...");

            // Create a test component class that exposes defer()
            class TestComponent : public Component {
            public:
              void test_defer() {
                for (int i = 0; i < 10; i++) {
                  int expected = i;
                  this->defer([expected]() {
                    ESP_LOGD("defer_test", "defer() item %d executed, order %d", expected, defer_order);
                    if (defer_order != expected) {
                      ESP_LOGE("defer_test", "FIFO violation in defer: expected %d but got execution order %d", expected, defer_order);
                      defer_passed = false;
                    }
                    defer_order++;

                    if (defer_order == 10) {
                      if (defer_passed) {
                        ESP_LOGI("defer_test", "✓ Test PASSED - defer() maintains FIFO order");
                        id(test_result)->trigger("passed");
                      } else {
                        ESP_LOGE("defer_test", "✗ Test FAILED - defer() executed out of order");
                        id(test_result)->trigger("failed");
                      }
                      id(test_complete)->trigger("test_finished");
                    }
                  });
                }
              }
            };

            // Use a static instance so it doesn't go out of scope
            static TestComponent test_component;
            test_component.test_defer();

            ESP_LOGD("defer_test", "Deferred 10 items using defer(), waiting for execution...");

event:
  - platform: template
    name: "Test Complete"
    id: test_complete
    device_class: button
    event_types:
      - "test_finished"
  - platform: template
    name: "Test Result"
    id: test_result
    device_class: button
    event_types:
      - "passed"
      - "failed"