See some API security tips for protecting vital data Security testing - the API has defined security requirements including authentication, permissions and access controls.Creativity testing - the API can handle being used in different ways.Load testing - the API can handle a large amount of calls.Reliability testing - the API can be consistently connected to and lead to consistent results.Functionality testing - the API works and does exactly what it’s supposed to do.Who on your team is in charge of testing what?Īfter you’ve created these testing boundaries and requirements, you need to decide what you want to test your API for.What other APIs could this API interact with?.What is defined as a Pass or a Fail? What data is the desired output? What is the chain of events?.What could potentially happen in abnormal circumstances?.What is supposed to happen in normal circumstances?.What environment/s should the API typically be used?.Who is your target audience? Who is your API consumer?.Start by asking yourself these questions: Next, you need to organize yourself around the API test. You can start combining your application data with your API tests to ensure that the API performs as expected against possible known input configurations. Once you’ve set up your API testing environment, make an API call right away to make sure nothing is broken before you go forward to start your more thorough testing. This involves configuring the database and server for the application’s requirements. The first part of API testing involves setting up a testing environment, with the required set of parameters around the API. Ensuring that all data access (read and write) goes only through the API significantly simplifies security and compliance testing and thereby certification, since there is only one interface.Įnsuring that all the required business rules are being enforced at the API tier allows time for much more complete user-experience tests once the UI is released, and not having to concentrate on testing every single business rule and path through the application near the end of the project.Įnsuring that the API offers complete functionality allows for easy future expansion of the application as new business needs arise. Putting more effort into API testing leads to a much healthier final product. Make sure your APIs work across devices, browsers, and operating systems.Find all the way users can mess things up.Make sure it does what it’s supposed to do.Here are some of the most common reasons people test their APIs: Also, if an API breaks because errors weren’t detected, there is the threat of not only breaking a single application, but an entire chain of business processes hinged to it. If an API doesn’t work efficiently and effectively, it will never be adopted, regardless if it is a free or not. It’s what makes our phones “smart”, and it’s what streamlines business processes. While developers tend to test only the functionalities they are working on, testers are in charge of testing both individual functionalities and a series or chain of functionalities, discovering how they work together from end to end.ĪPIs are what gives value to an application. The risk of putting a bad, and potentially insecure, product on the market is greater than the cost to test it.ĪPI testing is one of the most challenging parts of the chain of software and QA testing because it works to assure that our digital lives run in an increasingly seamless and efficient manner. Continuous testing is also very important to make sure it continues to work when the public has access to it. While developers tend to test only the basic functionality they are working on, testers are in charge of testing functionality, performance and security of APIs, discovering how all components work together from end to end.Īt its most basic level, API testing is intended to reveal bugs: inconsistencies or deviations from the expected behavior. We have the resources you need to understand how to test your APIs and how to make sure they are successful.ĪPI testing can be one of the most challenging parts of software and QA testing because APIs can be complicated, they are often based on protocols and standards that we often do no encounter in other kinds of testing. We’re glad you’re taking the first step towards testing your APIs, learning more about the process! API testing can be a daunting task if you aren’t quite sure where to start. We believe that API testing is a crucial part of the API development lifecycle, and that it should not be forgotten. Here at, we are committed to making API testing easy and reliable for everyone.
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