From a28f331f73ed8f8b0c830767422718ce9cf67cff Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Fri, 27 Mar 2026 15:48:10 -1000
Subject: [PATCH] [text_sensor] Replace truncation guard with
 ESPHOME_DEBUG_ASSERT

---
 esphome/components/text_sensor/filter.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/esphome/components/text_sensor/filter.h b/esphome/components/text_sensor/filter.h
index ccc52e2770..41eed5f49b 100644
--- a/esphome/components/text_sensor/filter.h
+++ b/esphome/components/text_sensor/filter.h
@@ -167,10 +167,9 @@ template<size_t N> class MapFilter : public Filter {
   explicit MapFilter(const std::initializer_list<Substitution> &mappings) {
     size_t i = 0;
     for (const auto &m : mappings) {
-      if (i >= N)
-        break;
       this->mappings_[i++] = m;
     }
+    ESPHOME_DEBUG_ASSERT(i == N);
   }
   bool new_value(std::string &value) override { return map_filter_apply(this->mappings_.data(), N, value); }