gridpilot.gg/core/identity/application/use-cases/SignupSponsorUseCase.test.ts

import type { Logger } from '@core/shared/domain/Logger';
import { describe, expect, it, vi, type Mock, beforeEach } from 'vitest';
import { SignupSponsorUseCase } from './SignupSponsorUseCase';
import type { AuthRepository } from '../../domain/repositories/AuthRepository';
import type { CompanyRepository } from '../../domain/repositories/CompanyRepository';
import type { PasswordHashingService } from '../ports/PasswordHashingService';

describe('SignupSponsorUseCase', () => {
  let authRepo: {
    findByEmail: Mock;
    save: Mock;
  };
  let companyRepo: {
    create: Mock;
    save: Mock;
    delete: Mock;
  };
  let passwordService: {
    hash: Mock;
  };
  let logger: Logger;
  let useCase: SignupSponsorUseCase;

  beforeEach(() => {
    authRepo = {
      findByEmail: vi.fn(),
      save: vi.fn(),
    };

    companyRepo = {
      create: vi.fn(),
      save: vi.fn(),
      delete: vi.fn(),
    };

    passwordService = {
      hash: vi.fn(),
    };

    logger = {
      debug: vi.fn(),
      info: vi.fn(),
      warn: vi.fn(),
      error: vi.fn(),
    } as unknown as Logger;

    useCase = new SignupSponsorUseCase(
      authRepo as unknown as AuthRepository,
      companyRepo as unknown as CompanyRepository,
      passwordService as unknown as PasswordHashingService,
      logger,
    );
  });

  it('creates user and company successfully when email is free', async () => {
    authRepo.findByEmail.mockResolvedValue(null);
    passwordService.hash.mockResolvedValue('hashed-password');
    companyRepo.create.mockImplementation((data) => ({
      getId: () => 'company-1',
      ...data,
    }));
    companyRepo.save.mockResolvedValue(undefined);
    authRepo.save.mockResolvedValue(undefined);

    const result = await useCase.execute({
      email: 'sponsor@example.com',
      password: 'Password123',
      displayName: 'Sponsor User',
      companyName: 'Sponsor Inc',
    });

    expect(result.isOk()).toBe(true);
    const signupResult = result.unwrap();
    expect(signupResult.user).toBeDefined();
    expect(signupResult.company).toBeDefined();
    expect(signupResult.user.getEmail()).toBe('sponsor@example.com');
    expect(signupResult.user.getDisplayName()).toBe('Sponsor User');
    expect(companyRepo.create).toHaveBeenCalled();
    expect(companyRepo.save).toHaveBeenCalled();
    expect(authRepo.save).toHaveBeenCalled();
  });

  it('returns error when user already exists', async () => {
    const existingUser = {
      getId: () => ({ value: 'existing-user' }),
      getEmail: () => 'sponsor@example.com',
      getDisplayName: () => 'Existing User',
      getPasswordHash: () => ({ value: 'hash' }),
    };
    authRepo.findByEmail.mockResolvedValue(existingUser);

    const result = await useCase.execute({
      email: 'sponsor@example.com',
      password: 'Password123',
      displayName: 'Sponsor User',
      companyName: 'Sponsor Inc',
    });

    expect(result.isErr()).toBe(true);
    expect(result.unwrapErr().code).toBe('USER_ALREADY_EXISTS');
  });

  it('returns error for weak password', async () => {
    const result = await useCase.execute({
      email: 'sponsor@example.com',
      password: 'weak',
      displayName: 'Sponsor User',
      companyName: 'Sponsor Inc',
    });

    expect(result.isErr()).toBe(true);
    expect(result.unwrapErr().code).toBe('WEAK_PASSWORD');
  });

  it('returns error for invalid display name', async () => {
    const result = await useCase.execute({
      email: 'sponsor@example.com',
      password: 'Password123',
      displayName: 'A',
      companyName: 'Sponsor Inc',
    });

    expect(result.isErr()).toBe(true);
    expect(result.unwrapErr().code).toBe('INVALID_DISPLAY_NAME');
  });

  it('rolls back company creation on failure', async () => {
    authRepo.findByEmail.mockResolvedValue(null);
    passwordService.hash.mockResolvedValue('hashed-password');
    companyRepo.create.mockImplementation((data) => ({
      getId: () => 'company-1',
      ...data,
    }));
    companyRepo.save.mockResolvedValue(undefined);
    authRepo.save.mockRejectedValue(new Error('Database error'));

    const result = await useCase.execute({
      email: 'sponsor@example.com',
      password: 'Password123',
      displayName: 'Sponsor User',
      companyName: 'Sponsor Inc',
    });

    expect(result.isErr()).toBe(true);
    expect(result.unwrapErr().code).toBe('REPOSITORY_ERROR');
    expect(companyRepo.delete).toHaveBeenCalledWith('company-1');
  });
});