MCP Fetch

import { getClient, getTestServerUrl } from '../setup/jest.setup'; import { MCPTestHelper } from '../test-utils/jest-mcp-helper'; describe('Fetch Tool', () => { let client: MCPTestHelper; let testServerUrl: string; beforeAll(() => { client = getClient(); testServerUrl = getTestServerUrl(); }); describe('Basic HTTP Methods', () => { test('should perform GET request', async () => { const result = await client.testFetch(`${testServerUrl}/get`); expect(result).toBeDefined(); expect(result.body).toBeDefined(); expect(result.body.url).toBe(`${testServerUrl}/get`); expect(result.body.headers).toBeDefined(); expect(result.status).toBe(200); }); test('should perform POST request with JSON body', async () => { const testData = { test: 'data', number: 123 }; const result = await client.testFetch(`${testServerUrl}/post`, { method: 'POST', body: JSON.stringify(testData), headers: { 'Content-Type': 'application/json' } }); expect(result.status).toBe(200); expect(result.body.json).toBeDefined(); expect(result.body.json.test).toBe('data'); expect(result.body.json.number).toBe(123); }); test('should perform PUT request', async () => { const result = await client.testFetch(`${testServerUrl}/put`, { method: 'PUT', body: JSON.stringify({ update: 'value' }), headers: { 'Content-Type': 'application/json' } }); expect(result.status).toBe(200); expect(result.body.json).toBeDefined(); expect(result.body.json.update).toBe('value'); }); test('should perform DELETE request', async () => { const result = await client.testFetch(`${testServerUrl}/delete`, { method: 'DELETE' }); expect(result.status).toBe(200); expect(result.body.url).toBe(`${testServerUrl}/delete`); expect(result.body.headers).toBeDefined(); }); test('should perform PATCH request', async () => { const result = await client.testFetch(`${testServerUrl}/patch`, { method: 'PATCH', body: JSON.stringify({ patch: 'data' }), headers: { 'Content-Type': 'application/json' } }); expect(result.status).toBe(200); expect(result.body.json).toBeDefined(); expect(result.body.json.patch).toBe('data'); }); }); describe('Headers and Authentication', () => { test('should send custom headers', async () => { const customHeaders = { 'X-Custom-Header': 'test-value' }; const result = await client.testFetch(`${testServerUrl}/headers`, { headers: customHeaders }); expect(result.status).toBe(200); expect(result.body.headers).toBeDefined(); }); }); describe('Response Handling', () => { test('should handle different status codes', async () => { const result404 = await client.testFetch(`${testServerUrl}/status/404`); expect(result404.status).toBe(404); }); test('should handle JSON responses', async () => { const result = await client.testFetch(`${testServerUrl}/json`); expect(result.status).toBe(200); expect(result.body).toBeDefined(); }); }); describe('Request Options', () => { test('should handle redirects', async () => { const result = await client.testFetch(`${testServerUrl}/redirect/1`, { redirect: 'follow' }); expect(result.status).toBe(200); }); }); describe('Error Handling', () => { test('should handle basic error cases', async () => { const result = await client.testFetch(''); expect(result.success).toBe(false); expect(result.error).toBeDefined(); }); }); describe('Content Types', () => { test('should handle form data', async () => { const formData = new URLSearchParams({ field1: 'value1', field2: 'value2' }).toString(); const result = await client.testFetch(`${testServerUrl}/post`, { method: 'POST', body: formData, headers: { 'Content-Type': 'application/x-www-form-urlencoded' } }); expect(result).toBeDefined(); expect(result.status).toBe(200); }); test('should handle text content', async () => { const result = await client.testFetch(`${testServerUrl}/post`, { method: 'POST', body: 'Plain text content', headers: { 'Content-Type': 'text/plain' } }); expect(result).toBeDefined(); expect(result.status).toBe(200); }); }); });