An API provides much of the functional capabilities in complex software systems.
Most customers are accustomed to interacting with a graphical user interface on the computer. But, many do not realize that much of the functionality of a program comes from APIs in the operating system or the program’s dynamic-link libraries (DLL).
When the business logic or core functionality is exposed via an API call and you want to find functional bugs sooner, then API testing can provide additional value in your overall test strategy. API testing can start even before the user interface is complete, so functional capabilities can be tested while designers are hashing out the “look and feel.” While API testing will not replace testing through the user interface, it can augment your test strategy and provide a solid foundation of automated tests that increase your confidence in the functional quality of your product.
At EuroSTAR 2013 BJ Rollison gave an excellent presentation on API testing that is well worth watching.
Slide share: http://www.slideshare.net/EuroSTARConference/bj-rollison-slides
- What is API Testing?
- Why do API testing?
- The difference between Unit and API tests
- How to approach API testing
- Types of bugs testing will find
A case-study using: Java, REST Assured, Postman, Tracks, Curl and HTTP Proxies This is the first book review I have written on my site. So of course I had to choose a great book that was relevant to my niche. Alan Richardson’s book on Automating & Testing a REST API fits the bill perfectly. I am a big ...
API testing is different from GUI testing, but it doesn’t take long to master. What is an API? API is an acronym for Application Programming Interface. It enables communication and data exchange between two separate software systems. A software system implementing an API contains functions/subroutines which can be executed by another software system.
These are the popular authentication methods in TestArchitect Authentication in API testing is usually a complicated subject for both developers and testers since it requires extensive knowledge on various types of security protocols and encryption algorithms.
Understanding the pieces of the web service testing puzzle can make testing easier For people wanting a broader understanding of more pieces in the web service testing puzzle, here is a breakdown of the various possible components of an API.
APIs are the unsung hero of our connected world We live in an exciting age of intelligence, where progress moves at the speed of imagination. We are connected to the world and one another like never before. API (Application Programming Interface) is the unsung hero of our connected world. Here’s everything you need to know ...
API: An application programming interface (API) is a set of routines, protocols, and tools for building software applications. An API expresses a software component in terms of its operations, inputs, outputs, and underlying types. An API defines functionalities that are independent of their respective implementations, which allows definitions and implementations to vary without compromising the interface. Source: https://en.wikipedia.org/wiki/Application_programming_interface
API testing has long been misunderstood as well-confined in the territory of developers. It’s natural to think that we must write code to test our code. However, it doesn’t have to be that way anymore. Business testers who have deep domain knowledge are now able to take on the challenges of API testing without coding. ...
Summary Remember that Agile is not an SDLC. Neither are Scrum and XP for that matter. Instead, these are frameworks for projects; they are built from practices (for example, XP has 12 core practices). Scrum and XP advocates will freely recommend that you pick a few practices to implement, then keep what works and discard ...
Social APIs are omnipresent and create special cases for testing. If you understand API testing, especially web service type APIs, testing social APIs is easy to grasp. The use of social APIs makes them a special case. They are omnipresent and very well understood. What this means is you need to have a good understanding ...
An overview of web service testing solutions for traditional or non-technical testers. Much has been written on the technical execution of API tests, yet there are gaps in the details of what tests to design and how to design them. The articles tend to either get too technical too fast, or are too vague and ...
Here are some books you might find useful when developing your web services API testing strategy. The Art of Application Performance Testing by Ian Molyneaux — This book was just released and I found it an outstanding conceptual overview of performance testing a web based application. The book does a great job of reviewing the ...