k6 Performance Testing

This repository contains performance testing scripts written with k6 for two API performance testing scenarios.

Tech Stack

• k6
• JavaScript (ES6)

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Video Demonstration

K6.mp4

Scenario 1 – Daily Finance API Performance Test

Report

APIs Tested

Method	Endpoint
POST	/api/auth/login
GET	/api/user/users
GET	/api/user/:id

Test Workflow

1. Login as Admin.

2. Extract the authentication token.

3. Fetch all users.

4. Randomly select a user.

5. Search the selected user by ID.

6. Print:

   • User ID
   • Name
   • Email
   • Phone Number

7. Print response time for each API.

API Tags

• Admin Login API
• Get All Users API
• Get User By ID API

Validations

• Login response status is 200
• User list response status is 200
• User details response status is 200
• Selected user ID matches searched user ID

Thresholds

API	Threshold
Admin Login API	p(95) < 600ms
Get All Users API	p(95) < 800ms
Get User By ID API	p(95) < 600ms

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Scenario 2 – DemoQA BookStore Performance Test

Report

API Tested

GET

https://demoqa.com/BookStore/v1/Books

Load Pattern

Stage	Duration
Ramp up to 10 VUs	20s
Stay at 10 VUs	30s
Ramp up to 25 VUs	20s
Stay at 25 VUs	30s
Ramp down to 0 VUs	20s

Validations

• Response status is 200
• Response body contains books
• Response time is below 600ms

Thresholds

• 95% of requests complete within 600ms
• Failed request rate remains below 1%

Output

The script prints the total number of books returned by the API.

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Running the Tests

Run Question 1:

k6 run question1.js

Run Question 2:

k6 run question2.js

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Expected Results

• API response status validation
• API response time logging
• Random user selection and verification
• User information printed to the console
• Total number of books printed
• Threshold evaluation after test completion

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