From 099bea00f69837b42c0947ef4bb4f6be2508d7c4 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sun, 22 Mar 2026 21:30:22 -1000
Subject: [PATCH] Add test for _generate_source_table_code empty input

---
 tests/unit_tests/test_cpp_helpers.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/unit_tests/test_cpp_helpers.py b/tests/unit_tests/test_cpp_helpers.py
index 75b96bb9e07..efb3ca5e070 100644
--- a/tests/unit_tests/test_cpp_helpers.py
+++ b/tests/unit_tests/test_cpp_helpers.py
@@ -97,6 +97,12 @@ def test_register_component_source_deduplicates(monkeypatch):
     assert idx3 == 1  # deduplicated
 
 
+def test_generate_source_table_code_empty():
+    from esphome.cpp_helpers import _generate_source_table_code
+
+    assert _generate_source_table_code("TBL", "lookup", {}) == ""
+
+
 def test_register_component_source_overflow_warns(monkeypatch, caplog):
     # Pre-fill pool to max
     pool = ComponentSourcePool(