To meet growing user expectations, companies of all sizes are shifting toward DevOps and embracing API-driven software architectures. By doing so, they are exposing themselves to a new kind of risk: API vulnerabilities.
Users today expect software applications to do wonderful things and interact with other applications in ways that would have seemed impossible not too long ago. To meet growing user expectations, companies of all sizes are shifting toward DevOps and embracing API-driven software architectures. By doing so, they are exposing themselves to a new kind of risk: API vulnerabilities.
In this article, we explain the importance of API testing for making sure that applications are ready to ship and our recommendations of three popular API testing tools that you can use to do API testing the smart way.
As you may already know, API stands for Application Programming Interface. You can think of an API as a brain with many individual neurons that are activated by specific impulses. Any company can create an application that sends an impulse to a public API and receives a certain response. This enables seamless communication and information exchange between multiple software systems from multiple software companies.
Uber’s smartphone app is an excellent real-world example of how APIs are used by developers to integrate functionality developed by other companies. When you book a ride with Uber, the app itself doesn’t know how to calculate the route. Instead, it calls the Google Maps API and waits for an answer. The entire process is so seamless that, from the point of the user, it seems as if everything were happening right in the app.
What API testing aims to accomplish is to ensure that APIs and their integrations function in the most optimal manner possible and don’t contain any vulnerabilities that might help attackers compromise the server as well as the client.
Considering that the API is what gives most modern applications and services their value, it’s easy to see why API testing has become such an important part of the software development process.
The good news is that it’s becoming increasingly easy to execute complex API tests thanks to modern API testing tools. But even the best tool in the world is only as good as its user, which is why it’s paramount to be aware of the best practices of API testing:
SoapUI is the world’s most popular automated API testing tool, covering everything from web service inspection to invoking to development to functional testing to load and compliance testing. The first version of SoapUI was released in 2005, and the tool has since then established itself as the go-to automated API testing solution of millions of professional API testers.
What started as a Chrome browser plugin is now a complete API testing solution used by 5 million developers and more than 100,000 companies around the world. What has convinced so many API testers to use Postman is its quick and dirty workflow that revolves around Postman Collections, which are executable API descriptions that let you group individual requests together and organize these requests into folders.
You can attach test scripts to requests, build integration test suites, or use scripts to pass data between API requests, just to give you a few examples of what makes Postman Collections so useful.
Katalon Studio is a free, cross platform automation API testing tool built on top of open-source automation frameworks Selenium and Appium. It was first released in 2015, and it offers a unique keyword-driven approach to API testing and an easy-to-use user interface with a built-in integrated development environment (IDE).
Katalon Studio is available for Windows, macOS, and Linux, and there’s also a browser add-on for recording user actions in web applications and generating test scripts, called Katalon Recorder.
While there’s no one-size-fits-all approach to API testing, there are certain best practices that you should always keep in mind. Modern API testing tools make it easy to execute and automate complex API tests, and, in this article, we have listed our favorites to help you do API testing the smart way.
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