fix tränings statse sidan

tests/run.js

@@ -8,3 +8,5 @@ import "./race_audio.test.js";
 import "./decoder_runtime.test.js";
 import "./csv_import.test.js";
 import "./server_persistence.integration.test.js";
+
+import "./training_views.test.js";

tests/training_views.test.js

@@ -0,0 +1,35 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { getDriverProfileGroups } from "../src/driver_profile_logic.js";
+import { buildDriverTrainingStats } from "../src/training_logic.js";
+import { buildTrainingOverviewRows, resolveTrainingProfile } from "../src/training_views.js";
+
+test("training opens without implicitly selecting the first driver", () => {
+  const profiles = [{ id: "profile_1", driverIds: ["driver_1"] }];
+  assert.equal(resolveTrainingProfile(profiles, ""), null);
+  assert.equal(resolveTrainingProfile(profiles, "missing"), null);
+  assert.equal(resolveTrainingProfile(profiles, "driver_1")?.id, "profile_1");
+});
+
+test("training overview keeps each driver class on a separate statistics row", () => {
+  const state = {
+    classes: [{ id: "2wd", name: "2WD" }, { id: "4wd", name: "4WD" }],
+    drivers: [
+      { id: "driver_2wd", profileId: "profile_1", name: "Alex", classId: "2wd" },
+      { id: "driver_4wd", profileId: "profile_1", name: "Alex", classId: "4wd" },
+    ],
+    training: {
+      ledger: [
+        { driverId: "driver_2wd", sessionId: "s1", timestamp: 1_000, lapMs: 17_000 },
+        { driverId: "driver_2wd", sessionId: "s1", timestamp: 18_000, lapMs: 16_500 },
+        { driverId: "driver_4wd", sessionId: "s2", timestamp: 2_000, lapMs: 15_000 },
+      ],
+    },
+  };
+  const profiles = getDriverProfileGroups(state);
+  const rows = buildTrainingOverviewRows(state, profiles, buildDriverTrainingStats);
+  assert.equal(rows.length, 2);
+  assert.equal(rows.find((row) => row.classId === "2wd").stats.totalLaps, 2);
+  assert.equal(rows.find((row) => row.classId === "4wd").stats.totalLaps, 1);
+});