1 files changed, 15 insertions, 2 deletions
diff --git a/web/test/sort-tasks.test.mjs b/web/test/sort-tasks.test.mjs
index fe47702..4d98f20 100644
--- a/web/test/sort-tasks.test.mjs
+++ b/web/test/sort-tasks.test.mjs
@@ -12,12 +12,13 @@ import assert from 'node:assert/strict';
 // ── Implementation under contract ─────────────────────────────────────────────
 // Remove this block once sortTasksByDate is available from app.js.
 
-function sortTasksByDate(tasks) {
+function sortTasksByDate(tasks, descend = false) {
   return [...tasks].sort((a, b) => {
     if (!a.created_at && !b.created_at) return 0;
     if (!a.created_at) return 1;
     if (!b.created_at) return -1;
-    return new Date(a.created_at) - new Date(b.created_at);
+    const diff = new Date(a.created_at) - new Date(b.created_at);
+    return descend ? -diff : diff;
   });
 }
 
@@ -42,6 +43,18 @@ describe('sortTasksByDate', () => {
     assert.equal(result[2].id, 'c', 'newest should be last');
   });
 
+  it('sorts tasks newest-first when descend=true', () => {
+    const tasks = [
+      makeTask('c', '2026-03-06T12:00:00Z'),
+      makeTask('a', '2026-03-04T08:00:00Z'),
+      makeTask('b', '2026-03-05T10:00:00Z'),
+    ];
+    const result = sortTasksByDate(tasks, true);
+    assert.equal(result[0].id, 'c', 'newest should be first');
+    assert.equal(result[1].id, 'b');
+    assert.equal(result[2].id, 'a', 'oldest should be last');
+  });
+
   it('returns a new array (does not mutate input)', () => {
     const tasks = [
       makeTask('b', '2026-03-05T10:00:00Z'),