GET vs POST vs PUT vs PATCH vs DELETE

Overview

This PDF moves beyond simple HTTP method definitions to practical application in API testing. It guides users to transform method definitions into test cases covering contracts, state changes, idempotency, permissions, and side effects. The content compares full replacement, partial updates, and repeat behavior, addressing common ambiguities such as the distinction between PUT and PATCH. The document supports QA professionals and those preparing for API interview questions by detailing how to cover invalid data, conflicts, and retries, not just successful requests. It focuses on validating intended and unintended side effects, explaining contracts, and confirming responses to build confidence in API testing skills.

Table of contents

1. GO BEYOND THE VERB
2. KNOWING THE HTTP METHODS
3. PUT vs PATCH still feels unclear?
4. Only testing successful requests?
5. Need stronger API interview answers?
6. FROM HTTP VERBS TO API TESTING CONFIDENCE
7. DON'T JUST PICK THE VERB.
8. PROVE WHAT THE REQUEST SHOULD CHANGE.
9. MASTER METHOD SEMANTICS
10. VALIDATE STATE CHANGES
11. PRACTICE FASTER WITH AI
12. PREPARE FOR THE NEXT ROLE

Who this resource is for

• API Tester