This document discusses web application programming interfaces (APIs) and strategies for testing them. It begins by defining APIs and describing their history and evolution. Models are presented as useful tools for understanding APIs and developing test strategies. An example API is demonstrated and modeled at different levels, and a test model and strategy are outlined. Guidance is provided on questions to consider when testing APIs. The document concludes by thanking the audience.

1. <2002>
Pic Credits:
www
Popularly referred to as
API Mandate Memo from Jeff Bezos

2. Inside Story:
Scratching the
Black Box - API
Ravisuriya
@testingGarage
Test Engineer
Student of Software Testing

3. <audience>
• One starting with Web API Testing – primary audience
• One wanting to explore deep into layers of Web API

4. <api generations>
Pic Credits:
@sdubois
xignite

5. <api history>
Pic Credits:
@sdubois
xignite

6. <api>
• API is a software intermediary
• It allows two or more applications to talk to each other
Intermediary – someone who acts as a mediator between two other people

7. <you know it>
intermediaries (APIs)
? a system

8. <api in me>
Pic Credits:
www
organs as biological intermediaries (APIs)

9. <black box?>
• Is an API a black box?
• Is Selenium library a black box?
• Is Appium library a black box?
• One’s testing mindset determines the colour of a box

10. <web api>

11. <model>
• A model is a simplified version of the observations
• It helps to focus on what has to be focused
• It helps you make better assumptions and test them

12. <model>
• Have models in testing & automation
• Model the
• Platform + Layers + Product
• Product + User + Use Cases + Data
• … and more A basic model of UI and Back-end
All models are wrong, but some are useful. – George Box

13. <platform model>
An API platform model from
one of my projects as I
understood and wrote it
for my better understanding
of communication between
different components and
API endpoints, and to client.

14. <model the api tests>
• TEST DATES - a heuristic
• Tests
• Events
• State
• Technology
• Data
• Actions
• Time
• Experience
• Storage
Download mind map:
https://bit.ly/36sXZF8

15. <demo>
• Web API: restful-booker.herokuapp.com
• Credits: Mark Winteringham
• Hotel Booking API

16. <demo>
• API & Back-End Model
• Test Model
• Test Strategy
• Test Data
• Test Coverage

17. <demo>
ReSTful Booker Booking API Model

18. <demo>
Structural Model to focus on what to test in the Booking API
We will touch these areas in the testing now for Booking API

19. <questions>
… … ..?
• Don’t Panic; Share Awareness
• Know what is Syndromic Approach
• Wear Mask
• Keep Social Distance
• Sanitize, Hand Wash
• Take Vaccine
• Watch Out for Symptoms
• Do Not Wait for Test Report to Decide and ACT
• Seek Medication Immediately on Noticing Symptoms
• We will cross this pandemic!
Flow Chart: Practical Approach to sample COVID
Credits: Dr Chetan Kumar NG
Download here: https://bit.ly/3r1miUo

20. <thank you>
@testingGarage
ravisuriya1 at gmail dot com