[Enhancement] Improvements for debounce test coverage + bug fixes for sym_defer_g and sym_eager_pr (#21667)

Co-authored-by: Nebuleon <2391500+Nebuleon@users.noreply.github.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/quantum/debounce/tests/sym_defer_g_tests.cpp b/quantum/debounce/tests/sym_defer_g_tests.cpp
index 73d3d45e30..33e8b17852 100644
--- a/quantum/debounce/tests/sym_defer_g_tests.cpp
+++ b/quantum/debounce/tests/sym_defer_g_tests.cpp
@@ -236,3 +236,21 @@ TEST_F(DebounceTest, OneKeyDelayedScan4) {
     time_jumps_ = true;
     runEvents();
 }
+
+TEST_F(DebounceTest, AsyncTickOneKeyShort1) {
+    addEvents({
+        /* Time, Inputs, Outputs */
+        {0, {{0, 1, DOWN}}, {}},
+
+        {5, {}, {{0, 1, DOWN}}},
+        /* 0ms delay (fast scan rate) */
+        {5, {{0, 1, UP}}, {}},
+
+        {10, {}, {{0, 1, UP}}},
+    });
+    /*
+     * Debounce implementations should never read the timer more than once per invocation
+     */
+    async_time_jumps_ = DEBOUNCE;
+    runEvents();
+}