How to Validate POST API Response in Playwright | Status Code, Body & ID Validation

Welcome back to the Playwright API Testing series!

In this video, we will learn how to validate POST API responses in Playwright.

So far in this series, we have learned:

Playwright setup and installation
GET request handling
POST request creation
PUT and DELETE requests
Basic response validation

In previous videos, we mainly validated the status code.

But in real API testing, that is not enough.

In this video, we will learn how to validate POST API response in detail.

We will cover:

Status code validation (201 Created)
Response body validation
Object validation vs Array validation
Data type validation using typeof
Field existence validation using toBeDefined()
Empty value validation
Format validation (email validation using @ check)
ID validation (server-generated values)
Understanding response structure (object vs array)

We will also understand:

What is an object response
How POST requests return data
How server generates IDs dynamically
Why response validation is important in API testing

This video is beginner-friendly and explained step by step using Playwright with TypeScript.

Stay tuned for upcoming videos on:

Headers in API Testing
Authentication (Bearer Token, API Key)
PATCH requests
Query Parameters & Path Parameters
Advanced API validation techniques

#Playwright #APITesting #POSTAPI #ResponseValidation #AutomationTesting #SoftwareTesting #QA #RESTAPI #JSONValidation #PlaywrightAPI

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