refactor

core/racing/application/use-cases/GetTotalRacesUseCase.test.ts

@@ -0,0 +1,63 @@
+import { describe, it, expect, beforeEach, vi, Mock } from 'vitest';
+import { GetTotalRacesUseCase } from './GetTotalRacesUseCase';
+import { IRaceRepository } from '../../domain/repositories/IRaceRepository';
+import type { Logger } from '@core/shared/application';
+
+describe('GetTotalRacesUseCase', () => {
+  let useCase: GetTotalRacesUseCase;
+  let raceRepository: {
+    findAll: Mock;
+  };
+  let logger: {
+    debug: Mock;
+    info: Mock;
+    warn: Mock;
+    error: Mock;
+  };
+
+  beforeEach(() => {
+    raceRepository = {
+      findAll: vi.fn(),
+    };
+    logger = {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    };
+    useCase = new GetTotalRacesUseCase(
+      raceRepository as unknown as IRaceRepository,
+      logger as unknown as Logger,
+    );
+  });
+
+  it('should return total number of races', async () => {
+    const races = [
+      { id: 'race-1', name: 'Race 1' },
+      { id: 'race-2', name: 'Race 2' },
+    ];
+
+    raceRepository.findAll.mockResolvedValue(races);
+
+    const result = await useCase.execute();
+
+    expect(result.isOk()).toBe(true);
+    expect(result.unwrap()).toEqual({
+      totalRaces: 2,
+    });
+  });
+
+  it('should return error on repository failure', async () => {
+    const error = new Error('Repository error');
+
+    raceRepository.findAll.mockRejectedValue(error);
+
+    const result = await useCase.execute();
+
+    expect(result.isErr()).toBe(true);
+    expect(result.unwrapErr()).toEqual({
+      code: 'REPOSITORY_ERROR',
+      details: { message: 'Failed to retrieve total races' },
+    });
+  });
+});