Make debounce() signal changes in the cooked matrix as return value (#17554)

1 files changed, 5 insertions, 1 deletions

diff --git a/quantum/debounce/tests/debounce_test_common.cpp b/quantum/debounce/tests/debounce_test_common.cpp
index 0d5a7bb766..bd98e32955 100644
--- a/quantum/debounce/tests/debounce_test_common.cpp
+++ b/quantum/debounce/tests/debounce_test_common.cpp
@@ -125,11 +125,15 @@ void DebounceTest::runDebounce(bool changed) {
     std::copy(std::begin(input_matrix_), std::end(input_matrix_), std::begin(raw_matrix_));
     std::copy(std::begin(output_matrix_), std::end(output_matrix_), std::begin(cooked_matrix_));
 
-    debounce(raw_matrix_, cooked_matrix_, MATRIX_ROWS, changed);
+    bool cooked_changed = debounce(raw_matrix_, cooked_matrix_, MATRIX_ROWS, changed);
 
     if (!std::equal(std::begin(input_matrix_), std::end(input_matrix_), std::begin(raw_matrix_))) {
         FAIL() << "Fatal error: debounce() modified raw matrix at " << strTime() << "\ninput_matrix: changed=" << changed << "\n" << strMatrix(input_matrix_) << "\nraw_matrix:\n" << strMatrix(raw_matrix_);
     }
+
+    if (std::equal(std::begin(output_matrix_), std::end(output_matrix_), std::begin(cooked_matrix_)) && cooked_changed) {
+        FAIL() << "Fatal error: debounce() did detect a wrong cooked matrix change at " << strTime() << "\noutput_matrix: cooked_changed=" << cooked_changed << "\n" << strMatrix(output_matrix_) << "\ncooked_matrix:\n" << strMatrix(cooked_matrix_);
+    }
 }
 
 void DebounceTest::checkCookedMatrix(bool changed, const std::string &error_message) {