How to select the right API testing tools

Selecting the right API testing tool plays an essential role in the success of a testing project. A suitable API solution can help save plenty of time and budget for the team. There are generally some options to consider:

Home-grown tools

Home-grown tools are suitable for the application that present unique testing challenges, for the team members with skills, time, and inclination to write their own test framework or build one on top of an existing open source tool. While these internal solutions can require team’s efforts to develop, they are generally programmer-friendly, precisely customized, and effectively integrated with the existing process and other infrastructure.

Open source tools

Using open source tools (JMeter, Rest-Assured) can be lightweight and appropriate for agile development. They mainly have a broad appeal, with features useful to both programmers and testers. However, not all open source tools are well documented, and training can be an issue for the testing team.

Vendor tools

Commercial tools (SoapUI Pro, Tricentis Tosca) are perceived as a safe bet as they are likely to come with available manuals, support, and training. Unfortunately, they remain some drawbacks: vendor tools are historically programmer-unfriendly as they tend to use proprietary scripting languages that programmers don’t want to spend time learning; they also tend to be heavyweight; and test scripts may be brittle, easily broken by minor changes to the application.

Particularly, these tools are generally expensive to purchase and maintain the license.

However, there are recently some vendor tools that can eliminate some disadvantages from the above vendor tools. For instance, Katalon Studio is a free tool with comparable features to commercial tools, or Postman is considered easy to setup and use compared the rest of commercial solutions. You can learn more about the top API testing tools here.

Selecting the right API testing tool is challenging but you can shortlist the choice from the candidates above considering your requirements, pros and cons of each solution — try not too ambitious at the early stage and doing the POC with the top 3 relevant solutions. You will have a better understanding of your project’s critical factors and issues to eliminate tools or fine-tune your choice to the most suitable solution for your project. Below is the top 5 API Testing Tools for 2018 (Learn more Top 10 API Testing Tools for 2018)

The interest in API testing has been trending up over the last five years, according to Google Trends. This growth possibly indicates that the demand for applying API testing has been increasing along with Agile and CI/CD adoption trends. Testing API and web services is no longer an activity taken solely by developers but gradually taken by the testing members who independently verify and validate API/services. So now it’s a good time for you to start learning API testing if you haven’t done so, it will be a valuable skillset with high demand for the future to come.