refactor

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

@@ -0,0 +1,64 @@
+import { describe, it, expect, beforeEach, vi, Mock } from 'vitest';
+import { GetTotalLeaguesUseCase } from './GetTotalLeaguesUseCase';
+import { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
+import type { Logger } from '@core/shared/application';
+
+describe('GetTotalLeaguesUseCase', () => {
+  let useCase: GetTotalLeaguesUseCase;
+  let leagueRepository: {
+    findAll: Mock;
+  };
+  let logger: {
+    debug: Mock;
+    info: Mock;
+    warn: Mock;
+    error: Mock;
+  };
+
+  beforeEach(() => {
+    leagueRepository = {
+      findAll: vi.fn(),
+    };
+    logger = {
+      debug: vi.fn(),
+      info: vi.fn(),
+      warn: vi.fn(),
+      error: vi.fn(),
+    };
+    useCase = new GetTotalLeaguesUseCase(
+      leagueRepository as unknown as ILeagueRepository,
+      logger as unknown as Logger,
+    );
+  });
+
+  it('should return total number of leagues', async () => {
+    const leagues = [
+      { id: 'league-1', name: 'League 1' },
+      { id: 'league-2', name: 'League 2' },
+      { id: 'league-3', name: 'League 3' },
+    ];
+
+    leagueRepository.findAll.mockResolvedValue(leagues);
+
+    const result = await useCase.execute();
+
+    expect(result.isOk()).toBe(true);
+    expect(result.unwrap()).toEqual({
+      totalLeagues: 3,
+    });
+  });
+
+  it('should return error on repository failure', async () => {
+    const error = new Error('Repository error');
+
+    leagueRepository.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 leagues' },
+    });
+  });
+});