OpenFoodFacts-mcp

import { describe, it, expect, vi, beforeEach } from 'vitest'; import { handleFileContent } from '../../src/resources/file-content'; import { getFileContents } from '../../src/utils/file-utils'; // Mock the file-utils module vi.mock('../../src/utils/file-utils', () => ({ getFileContent: vi.fn() })); describe('File Content Resource Handler', () => { beforeEach(() => { vi.resetAllMocks(); }); it('should return file content with metadata for a valid path', async () => { // Setup mock response const mockFileResponse = { content: 'file content goes here', metadata: { filename: 'test.txt', extension: '.txt', size: 1024, lastModified: '2023-01-01T00:00:00.000Z' } }; vi.mocked(getFileContents).mockResolvedValue(mockFileResponse); // Create test URI and URL const uri = 'openfoodfacts://file/lib/test.txt'; const url = new URL(uri); // Call the function const result = await handleFileContent(uri, url); // Verify mocks were called with correct parameters expect(getFileContents).toHaveBeenCalledWith('lib/test.txt'); // Verify the result expect(result).toEqual({ contents: [{ uri: 'openfoodfacts://file/lib/test.txt', text: 'file content goes here', metadata: { filename: 'test.txt', extension: '.txt', size: 1024, lastModified: '2023-01-01T00:00:00.000Z' } }] }); }); it('should return an error if filepath is missing', async () => { // Create test URI and URL with no filepath const uri = 'openfoodfacts://file/'; const url = new URL(uri); // Call the function const result = await handleFileContent(uri, url); // Verify getFileContent was not called expect(getFileContents).not.toHaveBeenCalled(); // Verify the result contains error information expect(result).toEqual({ contents: [{ uri: 'openfoodfacts://file/', text: 'Error accessing file: Filepath parameter is required', isError: true }] }); }); it('should handle errors from getFileContent', async () => { // Setup mock to throw an error const errorMessage = 'File not found'; vi.mocked(getFileContents).mockRejectedValue(new Error(errorMessage)); // Create test URI and URL const uri = 'openfoodfacts://file/nonexistent.txt'; const url = new URL(uri); // Call the function const result = await handleFileContent(uri, url); // Verify the result contains error information expect(result).toEqual({ contents: [{ uri: 'openfoodfacts://file/nonexistent.txt', text: `Error accessing file: ${errorMessage}`, isError: true }] }); }); it('should handle unexpected errors', async () => { // Create invalid inputs to generate an error const uri = 'invalid-uri'; // Call the function with a parameter that will cause an error const result = await handleFileContent(uri, null as any); // Verify the result contains error information expect(result).toEqual({ contents: [{ uri: 'invalid-uri', text: expect.stringContaining('Error processing request:'), isError: true }] }); }); });