From f51e65444ff8a501a61216666edee846b0737906 Mon Sep 17 00:00:00 2001 From: unai_71 Date: Tue, 10 Mar 2026 20:23:07 +0000 Subject: [PATCH] feat: add quality description to document TDD benefits for race condition tests --- docs/quality_description.md | 5 +++++ 1 file changed, 5 insertions(+) create mode 100644 docs/quality_description.md diff --git a/docs/quality_description.md b/docs/quality_description.md new file mode 100644 index 0000000..dff4f53 --- /dev/null +++ b/docs/quality_description.md @@ -0,0 +1,5 @@ +# Quality Description + +Writing tests first forced every component to be injectable and independently exercisable before any integration happened. That constraint turned out to matter more than expected when the race-condition tests were added at the end: because the producer, sysfs reader, and IPC bridge had already been broken into units with explicit interfaces (`std::function` callbacks, injected sleep, injected logger), the stress tests could be wired up without touching any production code. Nothing needed to be refactored to be testable — it already was. That is the practical benefit of TDD for concurrent embedded software: the discipline of writing the test first tends to eliminate shared mutable state and deep call chains by making them painful to test, which in turn reduces cyclomatic complexity almost as a side effect. + +