A brief introduction to APIs Deep dive into API Testing Introduction to Postman Demo

1. API testing for
everyone

2. I am Pricilla
Team Leader, Billennium IT Services (M) Sdn. Bhd.
You can find me at @pricillabelwin
Hello!
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3. What’s on the agenda today
◉ Brief introduction to APIs
◉ Deep dive into API Testing
◉ Introduction to Postman
◉ Demo
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4. “
The only way you can stay on top
is to remember to touch bottom
and get back to basics - Shane
Black
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5. Introduction to
APIs
Are you wondering what is an API?
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6. API stands for Application
Programming Interface
API is a set of routines, protocols,
and tools for building Software
Application
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7. History of APIs
● Late 1990s as web services.
● Salesforce released its first API in 2000.
● Amazon, Flickr, Facebook, and Twitter

8. Types of APIs
Public
Open to anyone. Ex:
Google APIs
Private
Requires specific
rights or license. In-
house APIs
Shared/Partner
Requires specific
rights or license. Ex:
Expedia, Airbnb
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9. What is an API call?

10. Types of API Protocols
● SOAP (Simple Object Access Protocol)
● REST (REpresentational State Transfer)
● GraphQL
● JSON-RPC (JavaScript Object Notation- Remote Procedural Call)
● gRPC (Google Remote Procedural Call)
● XML-RPC (Extensible Markup Language Remote Procedural Call)
● Apache Thrift

11. HTTP Request methods

12. HTTP Response codes

13. API Testing
What, How, Why?
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14. What is API Testing?
API testing is the process of sending requests to an
API and monitoring the responses to ensure its
behaving as expected.

15. Types of API Testing
● Validation Testing
● Functional Testing
● Integration Testing
● Security Testing
● Performance Testing
● Reliability Testing
● API Documentation Testing
● Regression Testing

16. Advantages of API Testing
● Earlier Testing
● Faster
● Efficient
● Language independent
● Less maintenance

17. Challenges in API Testing
● Lack of documentation
● Initial Project setup
● Tool selection
● Without UI, tough to visualize the flow
● Unstable APIs
● Exceptional handling
● Lack of skilled testers

18. Tools available

19. Introduction to
Postman
Play your heart out
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20. Building blocks of Postman
● Collections
● Request/Response
● Variables
● Environments

21. Postman HOME page
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22. Small exercises

23. Any questions ?
Thanks!
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24. Credits
Special thanks to all the people who made and
released these awesome resources for free:
◉ Presentation template by SlidesCarnival
◉ Photographs by Unsplash
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