const { SpecFetcher } = require('../src/spec-fetcher');
const axios = require('axios');
// Mock axios
jest.mock('axios');
const mockedAxios = axios as jest.Mocked<typeof axios>;
describe('SpecFetcher', () => {
let specFetcher: SpecFetcher;
beforeEach(() => {
specFetcher = new SpecFetcher();
mockedAxios.get.mockClear();
mockedAxios.head.mockClear();
});
describe('checkForUpdates', () => {
it('should return update info when checking for updates', async () => {
// Mock successful API responses
mockedAxios.head.mockResolvedValue({
headers: { 'last-modified': 'Thu, 01 Jan 2024 00:00:00 GMT' },
status: 200,
});
mockedAxios.get.mockResolvedValue({
data: '# MCP Specification\n\nTest content',
status: 200,
});
const result = await specFetcher.checkForUpdates();
expect(result).toBeDefined();
expect(result.lastChecked).toBeInstanceOf(Date);
expect(typeof result.hasUpdates).toBe('boolean');
});
it('should handle API errors gracefully', async () => {
// Mock API error
mockedAxios.head.mockRejectedValue(new Error('Network error'));
const result = await specFetcher.checkForUpdates();
expect(result).toBeDefined();
expect(result.hasUpdates).toBe(false);
});
it('should force refresh when requested', async () => {
mockedAxios.head.mockResolvedValue({
headers: { 'last-modified': 'Thu, 01 Jan 2024 00:00:00 GMT' },
status: 200,
});
mockedAxios.get.mockResolvedValue({
data: '# MCP Specification\n\nTest content',
status: 200,
});
await specFetcher.checkForUpdates(true);
expect(mockedAxios.head).toHaveBeenCalled();
});
});
describe('getSpec', () => {
it('should return cached spec when available', async () => {
// First call to populate cache
mockedAxios.get.mockResolvedValue({
data: '# MCP Specification\n\nTest content',
status: 200,
});
await specFetcher.checkForUpdates();
const spec = await specFetcher.getSpec();
expect(spec).toContain('# MCP Specification');
});
it('should fetch spec when cache is empty', async () => {
mockedAxios.get.mockResolvedValue({
data: '# MCP Specification\n\nFresh content',
status: 200,
});
const spec = await specFetcher.getSpec();
expect(spec).toContain('# MCP Specification');
expect(mockedAxios.get).toHaveBeenCalled();
});
});
});
