http-request-mock

import mock from 'http-request-mock'; // Initialize the mocking library to intercept requests mock.setup(); // Mock a GET request to /api/users with a static JSON response mock.get('/api/users', (req) => { console.log('Intercepted GET /api/users request:', req.url); return { status: 200, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify([ { id: 1, name: 'Alice', email: 'alice@example.com' }, { id: 2, name: 'Bob', email: 'bob@example.com' } ]) }; }, { delay: 500 }); // Simulate network latency with a 500ms delay // Mock a POST request to /api/users with a dynamic response based on request body mock.post('/api/users', (req) => { const newUser = JSON.parse(req.body); console.log('Intercepted POST /api/users request with data:', newUser); return { status: 201, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ id: Math.floor(Math.random() * 1000) + 3, ...newUser }) }; }); // Simulate client-side requests using fetch async function fetchAndLogUsers() { console.log('\nAttempting to fetch users...'); try { const response = await fetch('/api/users'); const data = await response.json(); console.log('Fetched users (mocked):', data); } catch (error) { console.error('Error fetching users:', error); } } async function createAndLogUser() { console.log('\nAttempting to create a user...'); try { const response = await fetch('/api/users', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ name: 'Charlie', email: 'charlie@example.com' }) }); const data = await response.json(); console.log('Created user (mocked):', data); } catch (error) { console.error('Error creating user:', error); } } fetchAndLogUsers(); createAndLogUser(); // In a testing environment, you would typically tear down mocks: // afterAll(() => { // mock.teardown(); // });