view models

apps/website/lib/view-models/DriverLeaderboardViewModel.test.ts

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+import { describe, it, expect } from 'vitest';
+import { DriverLeaderboardViewModel } from './DriverLeaderboardViewModel';
+import { DriverLeaderboardItemViewModel } from './DriverLeaderboardItemViewModel';
+import type { DriverLeaderboardItemDTO } from '../types/generated/DriverLeaderboardItemDTO';
+
+const createDriver = (overrides: Partial<DriverLeaderboardItemDTO & { avatarUrl: string }> = {}): DriverLeaderboardItemDTO & { avatarUrl: string } => ({
+  id: 'driver-1',
+  name: 'Driver One',
+  rating: 1500,
+  skillLevel: 'advanced',
+  nationality: 'DE',
+  racesCompleted: 10,
+  wins: 3,
+  podiums: 5,
+  isActive: true,
+  rank: 1,
+  avatarUrl: 'https://example.com/avatar-1.jpg',
+  ...overrides,
+});
+
+describe('DriverLeaderboardViewModel', () => {
+  it('wraps DTO drivers into DriverLeaderboardItemViewModel instances', () => {
+    const drivers = [createDriver({ id: 'driver-1' }), createDriver({ id: 'driver-2', name: 'Driver Two' })];
+    const viewModel = new DriverLeaderboardViewModel({ drivers });
+
+    expect(viewModel.drivers).toHaveLength(2);
+    expect(viewModel.drivers[0]).toBeInstanceOf(DriverLeaderboardItemViewModel);
+    expect(viewModel.drivers[0].position).toBe(1);
+    expect(viewModel.drivers[1].position).toBe(2);
+  });
+
+  it('computes aggregate totals and active count', () => {
+    const drivers = [
+      createDriver({ id: 'driver-1', racesCompleted: 10, wins: 3, isActive: true }),
+      createDriver({ id: 'driver-2', racesCompleted: 5, wins: 1, isActive: false }),
+    ];
+
+    const viewModel = new DriverLeaderboardViewModel({ drivers });
+
+    expect(viewModel.totalRaces).toBe(15);
+    expect(viewModel.totalWins).toBe(4);
+    expect(viewModel.activeCount).toBe(1);
+  });
+
+  it('passes previous rating to items when provided', () => {
+    const currentDrivers = [
+      createDriver({ id: 'driver-1', rating: 1550 }),
+      createDriver({ id: 'driver-2', rating: 1400 }),
+    ];
+
+    const previousDrivers: (DriverLeaderboardItemDTO & { avatarUrl: string })[] = [
+      { ...createDriver({ id: 'driver-1', rating: 1500 }) },
+      { ...createDriver({ id: 'driver-2', rating: 1450 }) },
+    ];
+
+    const viewModel = new DriverLeaderboardViewModel({ drivers: currentDrivers }, previousDrivers);
+
+    expect(viewModel.drivers[0].ratingTrend).toBe('up');
+    expect(viewModel.drivers[1].ratingTrend).toBe('down');
+  });
+});