What Is API Testing?

APIs, or Application Programming Interfaces, are what developers use to connect one application to another which allows for data exchanges between pieces of software. If an API doesn’t work efficiently or effectively, it can negatively impact software quality, business processes and the end user’s experience. Most applications include three primary layers - the user interface (presentation), the business layer and the database which is used to categorize and manipulate the data.

QAffluent’s Automated API Testing Services Include

An Effective and efficient API Testing process includes all the types of tests highlighted below to ensure that all API Performance, Functionality, and Security Features are in place. Our team at QAffluent also implements automated testing techniques to increase the Efficiency and Comprehension of API Tests.

Functional Testing
Functional Testing is mandated to validate the end-to-end functionality of your application and API layers. Moreover, it is required to ensure each application feature is synchronize with the software requirements.

Web UI Testing
This type of testing involves the graphical user interface. Moreover, to ensure that the web application or website’s functionality and usability meet as per expectations.

Load Testing
Load Testing, is done to ascertain the application and APIs perform as they should when under heavy number of users.

Runtime/Error Detection
This type of testing ensures that all exceptions and resource leaks are identified and corrected.

Security Testing
Security Testing- to ensure that the standard security features like Authentication, Permission Settings, and Access Controls meet the predefined requirements. Common security testing approaches include Penetration and Fuzz Testing.

Validation Testing
Validation testing is one of the last types of testing that team completes and ensures that API connections are working correctly across the application. Validation testing typically includes a series of smaller tests which includes Unit, Integration, System and UAT Testing

Interoperability and WS Compliance Testing
This Testing means that your SOAP APIs communicate correctly and efficiently with all other software components. The communication between the two systems is precise and clear as per requirement.

Automated API Testing
Having a team and technology that can automate a percentage of the tests allows the team to scale quickly and ensure their APIs receive comprehensive testing.

Our Automated API Testing Tools Include

A wide range of API testing tools are available to development and QA teams, but selecting the best set of tools can be time-consuming and demanding. When you partner with QAffluent, your API Testing requirements get the best solution. Our team of tool-agnostic experts can help your team evaluate, choose and implement the most appropriate set of tools to complete your API testing needs.

API Testing Benefits

Language Independent

An API tests exchanges data using XML or JSON. These transfer modes are completely language-independent, means you can select any core language when pursuing automated testing services for your application.


Because API testing requires less coding, your team can enjoy faster test results more affordably. At QAffluent, our API Testing gives you optimum results.

Increased Security

The unique set of conditions and inputs within an API removes common vulnerabilities and adds more protection for an application.

Web Design

API Testers can detect issues at an earlier stage. Thus the corrections are done before they become major issues.

Simple Integration With GUI

Web API testing supports highly integrable tests, which are especially beneficial when your team executes functional GUI tests following your API testing process.

Less Time Consuming than Functional GUI testing

Automated API testing validated in less time as compared to Functional GUI Testing. API Testing is significantly less time-consuming and thus accelerates the testing process.