From 68cec9cc283e56776b8d2828f41777a8034fd1d2 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Mon, 16 Mar 2026 22:32:36 -1000
Subject: [PATCH] Add real Application::loop() benchmark, call original_setup()
 in main

- Call original_setup() in benchmark main.cpp so code-generated App
  initialization (pre_setup, area/device registration, looping_components_
  init) runs before benchmarks
- Restore ApplicationLoop_Empty benchmark that calls the actual App.loop()
---
 tests/benchmarks/components/main.cpp          |  4 ++++
 .../core/bench_application_loop.cpp           | 19 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 tests/benchmarks/core/bench_application_loop.cpp

diff --git a/tests/benchmarks/components/main.cpp b/tests/benchmarks/components/main.cpp
index bae733cbc61..990db92f660 100644
--- a/tests/benchmarks/components/main.cpp
+++ b/tests/benchmarks/components/main.cpp
@@ -20,6 +20,10 @@ void original_setup() {
 }
 
 void setup() {
+  // Run auto-generated initialization (App.pre_setup, area/device registration,
+  // looping_components_.init, etc.) so benchmarks that use App work correctly.
+  original_setup();
+
   // Log functions call global_logger->log_vprintf_() without a null check,
   // so we must set up a Logger before any test that triggers logging.
   static esphome::logger::Logger test_logger(0);
diff --git a/tests/benchmarks/core/bench_application_loop.cpp b/tests/benchmarks/core/bench_application_loop.cpp
new file mode 100644
index 00000000000..5acbe8beaad
--- /dev/null
+++ b/tests/benchmarks/core/bench_application_loop.cpp
@@ -0,0 +1,19 @@
+#include <benchmark/benchmark.h>
+
+#include "esphome/core/application.h"
+
+namespace esphome::benchmarks {
+
+// Benchmark Application::loop() with no registered components.
+// App is initialized by original_setup() in main.cpp (code-generated
+// pre_setup, area/device registration, looping_components_.init).
+// This measures the baseline overhead of the main loop: scheduler,
+// timing, before/after loop tasks, and yield_with_select_.
+static void ApplicationLoop_Empty(benchmark::State &state) {
+  for (auto _ : state) {
+    App.loop();
+  }
+}
+BENCHMARK(ApplicationLoop_Empty);
+
+}  // namespace esphome::benchmarks