OpenFoodFacts-mcp

import { describe, it, expect, vi, beforeEach } from 'vitest'; import { handleProjectInfo } from '../../src/resources/project-info'; import fs from 'fs'; import { projectRoot } from '../../src/config/server-config'; import { readJsonFile } from '../../src/utils/file-utils'; // Mock dependencies vi.mock('fs', () => ({ default: { readdirSync: vi.fn() } })); vi.mock('../config/server-config', () => ({ projectRoot: '/mock/project/root' })); vi.mock('../utils/file-utils', () => ({ readJsonFile: vi.fn() })); describe('Project Info Resource Handler', () => { beforeEach(() => { vi.resetAllMocks(); }); it('should return project information with package data', async () => { // Mock package.json data const mockPackageInfo = { name: 'Open Food Facts Server', version: '1.0.0', description: 'Food products database for everyone' }; // Mock directory structure const mockDirs = ['cgi', 'lib', 'templates', 'taxonomies']; const mockDirEnts = mockDirs.map(name => ({ name, isDirectory: () => true })); // Set up mocks vi.mocked(readJsonFile).mockResolvedValue(mockPackageInfo); vi.mocked(fs.readdirSync).mockReturnValue(mockDirEnts as any); // Call function const uri = 'openfoodfacts://info'; const result = await handleProjectInfo(uri); // Verify results expect(result).toEqual({ contents: [{ uri, text: expect.any(String), metadata: { contentType: 'application/json' } }] }); // Parse returned JSON and verify const parsedInfo = JSON.parse(result.contents[0].text); expect(parsedInfo).toEqual({ name: mockPackageInfo.name, version: mockPackageInfo.version, description: mockPackageInfo.description, mainDirectories: mockDirs, technologies: expect.arrayContaining([ 'Perl (core backend)', 'MongoDB (database)' ]) }); // Verify mock was called expect(readJsonFile).toHaveBeenCalledWith('package.json', expect.any(Object)); expect(fs.readdirSync).toHaveBeenCalledWith(projectRoot, { withFileTypes: true }); }); it('should use default package info when package.json read fails', async () => { // Mock error reading package.json vi.mocked(readJsonFile).mockRejectedValue(new Error('Cannot read package.json')); // Mock directory structure const mockDirs = ['data', 'html']; const mockDirEnts = mockDirs.map(name => ({ name, isDirectory: () => true })); vi.mocked(fs.readdirSync).mockReturnValue(mockDirEnts as any); // Call function const uri = 'openfoodfacts://info'; const result = await handleProjectInfo(uri); // Parse returned JSON and verify default values are used const parsedInfo = JSON.parse(result.contents[0].text); expect(parsedInfo).toEqual({ name: 'Open Food Facts Server', version: 'Unknown', description: expect.stringContaining('food products database'), mainDirectories: mockDirs, technologies: expect.any(Array) }); }); it('should handle errors and return error response', async () => { // Mock filesystem error const mockError = new Error('Directory read error'); vi.mocked(fs.readdirSync).mockImplementation(() => { throw mockError; }); // Mock success reading package.json vi.mocked(readJsonFile).mockResolvedValue({ name: 'Open Food Facts Server', version: '1.0.0', description: 'Test description' }); // Call function const uri = 'openfoodfacts://info'; const result = await handleProjectInfo(uri); // Verify error response expect(result).toEqual({ contents: [{ uri, text: expect.stringContaining('Error retrieving project info'), isError: true }] }); expect(result.contents[0].text).toContain(mockError.message); }); });