From cebe9916011399ab218e3ef57f14f389fb5f0b47 Mon Sep 17 00:00:00 2001
From: Gilles Soulier <gil.soulier@gmail.com>
Date: Fri, 5 Jun 2026 05:26:31 +0200
Subject: [PATCH] feat(ui): helper sumUpdates (TDD)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 client/src/lib/stats.test.ts | 11 +++++++++++
 client/src/lib/stats.ts      |  4 ++++
 2 files changed, 15 insertions(+)
 create mode 100644 client/src/lib/stats.test.ts
 create mode 100644 client/src/lib/stats.ts

diff --git a/client/src/lib/stats.test.ts b/client/src/lib/stats.test.ts
new file mode 100644
index 0000000..2146059
--- /dev/null
+++ b/client/src/lib/stats.test.ts
@@ -0,0 +1,11 @@
+import { describe, it, expect } from "vitest";
+import { sumUpdates } from "./stats.js";
+
+describe("sumUpdates", () => {
+  it("somme les compteurs", () => {
+    expect(sumUpdates({ a: 2, b: 3, c: 0 })).toBe(5);
+  });
+  it("retourne 0 pour un objet vide", () => {
+    expect(sumUpdates({})).toBe(0);
+  });
+});
diff --git a/client/src/lib/stats.ts b/client/src/lib/stats.ts
new file mode 100644
index 0000000..cfeeb7c
--- /dev/null
+++ b/client/src/lib/stats.ts
@@ -0,0 +1,4 @@
+// client/src/lib/stats.ts
+export function sumUpdates(counts: Record<string, number>): number {
+  return Object.values(counts).reduce((acc, n) => acc + n, 0);
+}