If you want to utilize Jest for mocking your Azure Functions' Javascript HttpTrigger, you can refer to my detailed explanation on Stack Overflow: SO Answer
To install the necessary Jest dependencies:-
npm install @azure/functions jest supertest --save-dev
Sample Azure Function HttpTrigger code snippet:-
const { app } = require('@azure/functions');
app.http('httpTrigger1', {
methods: ['GET', 'POST'],
authLevel: 'anonymous',
handler: async (request, context) => {
context.log(`Http function processed request for url "${request.url}"`);
const name = request.query.get('name') || await request.text() || 'world';
return { body: `Hello, ${name}!` };
}
});
Example test file: index.test.js
const request = require('supertest');
const { app } = require('@azure/functions');
describe('Azure Function Tests', () => {
it('should respond with "Hello, world!" for GET request without name parameter', async () => {
const response = await request(app)
.get('/api/httpTrigger1')
.expect(200);
expect(response.text).toBe('Hello, world!');
});
it('should respond with "Hello, John!" for GET request with name parameter', async () => {
const response = await request(app)
.get('/api/httpTrigger1')
.query({ name: 'John' })
.expect(200);
expect(response.text).toBe('Hello, John!');
});
// Add more test cases as needed
});
Expected Output after running tests:-
Execute npx jest command:-