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
Lack of information and access to information isn’t an issue with web services. Web service documentation is widely available. Overview One of the major persistent complaints from people who test is lack of information and lack of access to information. Luckily this is not the case with web services. If in the rare case with ...
An approach to secure maintainability and scalability for API testing projects One of the most important tasks in API testing is designing the input data whose quantum could explode due to the combination of a vast number of arguments. An experienced tester will inevitably figure out the advantages of the pairwise method in efficiently picking ...
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.
APIs are subtly altering our expectations that there should be an app for everything. The concept of disruption has been given regal status across businesses, startups, and tech circles in recent years. With such great emphasis placed on change, user experiences are inevitably facing evolution as well. Application programming interfaces or APIs have great transformative powers to disrupt business, but are ...
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. ...
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
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 ...
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 ...
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.
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 ...
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.