import { getProjectDisplayName } from '../project-utils';

// Mock fs module
const fs = require('fs');
const path = require('path');
jest.mock('fs');
jest.mock('path');

describe('getProjectDisplayName', () => {
  const originalAliases = {
    'FT': '外放构建',
    'FT_DEV': '开发构建',
  };

  beforeEach(() => {
    // Mock the aliases file
    path.join.mockReturnValue('/mock/lib/project-aliases.json');
    fs.readFileSync.mockReturnValue(JSON.stringify(originalAliases));
  });

  afterEach(() => {
    jest.clearAllMocks();
  });

  it('should return display name for aliased project', () => {
    expect(getProjectDisplayName('FT')).toBe('外放构建');
  });

  it('should return directory name when no alias exists', () => {
    expect(getProjectDisplayName('UNKNOWN')).toBe('UNKNOWN');
  });

  it('should return directory name when aliases file is empty', () => {
    fs.readFileSync.mockReturnValue('{}');
    expect(getProjectDisplayName('FT')).toBe('FT');
  });

  it('should return directory name when aliases file cannot be read', () => {
    fs.readFileSync.mockImplementation(() => {
      throw new Error('File not found');
    });
    expect(getProjectDisplayName('FT')).toBe('FT');
  });
});