From f47799a645e6f5dddac82ac516362956ba01555a Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Fri, 27 Mar 2026 15:48:09 -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 2a90a6ad50..f4bb0228c5 100644
--- a/esphome/components/text_sensor/filter.h
+++ b/esphome/components/text_sensor/filter.h
@@ -133,10 +133,9 @@ template<size_t N> class SubstituteFilter : public Filter {
   explicit SubstituteFilter(const std::initializer_list<Substitution> &substitutions) {
     size_t i = 0;
     for (const auto &s : substitutions) {
-      if (i >= N)
-        break;
       this->substitutions_[i++] = s;
     }
+    ESPHOME_DEBUG_ASSERT(i == N);
   }
   bool new_value(std::string &value) override { return substitute_filter_apply(this->substitutions_.data(), N, value); }