Webhook testing strategies in Rest API - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to send a test webhook POST request using curl.

Rest API

curl [1] 'https://example.com/webhook' -d '{"event":"test"}'

Drag options to blanks, or click blank then click option'

A-d

B-H 'Content-Type: application/json'

C-X POST

D-X GET

Attempts:

3 left

💡 Hint

Common Mistakes

Using GET instead of POST

Omitting the HTTP method option

The -X POST option tells curl to send a POST request, which is required for webhook testing.

2fill in blank

medium

Complete the code to verify the webhook payload signature in Python.

Rest API

import hmac
import hashlib

def verify_signature(payload, signature, secret):
    expected = hmac.new(secret.encode(), payload, hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected, [1])

Drag options to blanks, or click blank then click option'

Ahashlib.sha256

Bpayload

Csecret

Dsignature

Attempts:

3 left

💡 Hint

Common Mistakes

Comparing with payload instead of signature

Not encoding the secret

The function compares the expected signature with the received signature to verify authenticity.

3fill in blank

hard

Fix the error in the Node.js webhook test server code to parse JSON body correctly.

Rest API

const express = require('express');
const app = express();

app.use([1]);

app.post('/webhook', (req, res) => {
  console.log(req.body);
  res.sendStatus(200);
});

Drag options to blanks, or click blank then click option'

Aexpress.json()

Bexpress.urlencoded()

Cexpress.text()

DbodyParser.json()

Attempts:

3 left

💡 Hint

Common Mistakes

Using express.urlencoded() for JSON

Not using any body parser middleware

express.json() middleware parses incoming JSON payloads so req.body is populated.

4fill in blank

hard

Fill both blanks to create a Python dictionary comprehension that filters webhook events with type 'payment'.

Rest API

filtered_events = {event['id']: event for event in events if event[1] [2] 'payment'}

Drag options to blanks, or click blank then click option'

A['type']

B==

C!=

D['id']

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '=='

Accessing wrong dictionary key

We access the 'type' key and check if it equals 'payment' to filter events.

5fill in blank

hard

Fill all three blanks to build a JavaScript object from webhook data filtering only events with status 'success'.

Rest API

const successEvents = Object.fromEntries(
  Object.entries(data).filter(([[1], [2]]) => [3] === 'success')
);

Drag options to blanks, or click blank then click option'

Akey

Bvalue

Cvalue.status

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'status' instead of 'value.status'

Swapping key and value names

We destructure entries into key and value, then filter by value.status equal to 'success'.