1 files changed, 16 insertions, 0 deletions
diff --git a/web/frontend/ride-detail-logic.test.ts b/web/frontend/ride-detail-logic.test.ts
index 471eb49..5104516 100644
--- a/web/frontend/ride-detail-logic.test.ts
+++ b/web/frontend/ride-detail-logic.test.ts
@@ -3,6 +3,7 @@ import assert from "node:assert/strict";
 import {
   categoryForCotacol,
   climbMetrics,
+  climbSample,
   cotacolForClimb,
   elevationAtDistance,
   formatClimbLabel,
@@ -41,6 +42,21 @@ test("calculates climb metrics with Cotacol", () => {
   assert.equal(metrics.category, categoryForCotacol(metrics.cotacol));
 });
 
+test("computes the recorded sample of a climb segment", () => {
+  assert.deepEqual(climbSample(points, { startIndex: 0, endIndex: 3 }), { distanceM: 250, elevationGainM: 20 });
+  assert.equal(climbSample(points, { startIndex: 3, endIndex: 0 }), null);
+});
+
+test("climb sample counts only upward steps", () => {
+  const rolling = [
+    { distanceKm: 0, elevationM: 100 },
+    { distanceKm: 0.1, elevationM: 130 },
+    { distanceKm: 0.2, elevationM: 110 },
+    { distanceKm: 0.3, elevationM: 140 },
+  ];
+  assert.deepEqual(climbSample(rolling, { startIndex: 0, endIndex: 3 }), { distanceM: 300, elevationGainM: 60 });
+});
+
 test("formats profile climb labels with category", () => {
   assert.equal(formatClimbLabel({ name: "", category: "Cat 4", cotacol: 45.9, kind: "detected" }), "Cat 4 45.9");
   assert.equal(formatClimbLabel({ name: "Col de Test", category: "Cat 4", cotacol: 45.9, kind: "detected" }), "Col de Test");