API Testing using POSTMAN and SOAP UI
API or say application programming interfaces are the tissues of connection between the layers or systems of the application. The application usually has around three layers – the data layer, the service layer, and the presentation layer. The API layer has the business logic of the application – the rules of how users can communicate with the services, functions, or data of the application. Due to the API or service layer touching both data as well as the presentation layer directly, it represents the sweet spot to continue testing of QA and development teams. Whereas traditional testing has been concerned with the UI, the API advantages are popular. There are several API testing aspects where it comprises making requests to single and multiple API endpoints and also response validation for security, status checking, or performance. UI testing focus to validate the look and feel of the web interface or that the button of payment works.
Few benefits of API testing; There are numerous benefits of API testing –
Early testing – With API testing, once the logic is clear tests can be validated in data and responses.
Easy for test maintaining – UIs are changing and moving based on access – devices, screen orientation, browsers, and so on.
Quick time for resolution – When the API test fails, we know where our system broke and where you can find out defects effortlessly.
Speed and coverage – API tests run very fast within 3 minutes of testing and also around 300 UI tests cover-up in 30 hours.
The difference between Manual testing and Automated testing
Manual testing is the software testing where tests are executed manually with the guidance of a QA analyst. It is performed for discovering bugs in software under the development section. In manual testing, the tester checks out all the necessary features of the given software or application. In this procedure, the software testers execute the test cases and produce the test reports without any help from automation software testing tools. Whereas in automated software testing, testers write test scripts/codes to automate the test execution. Testers use appropriate automation tools for developing the test codes and validate software. The main aim is to complete the execution of the test in no time.
Different types of API testing
There are various types of API testing –
● Reliability testing
● Load testing
● Functionality testing
● Creativity testing
● Security testing
● Proficiency testing
● Negative testing
● API documentation testing
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