API testing is an integral part of API development and is considered to be one of the most challenging types of software testing. When performing API testing, it is not enough to know that clicking a button will send a request to the server. It is important to understand the parts of a request, to know how to create, formulate, and send requests without relying on the UI, also to realize what to expect as a response when sending a test request to make sure the API is functioning correctly.

Furthermore, there is also a number of points that should be considered: the accuracy of data, schema validation, data type, validations, order and completeness, HTTP status codes, authorization checks, and error codes API returns.

Test Design and Coverage for a REST API | by Venkata Sai | Medium

Our Approach

API testing requires a professional approach because of the complexity of APIs, which are often based on rarely encountered standards and protocols. IntelliQuest is a software testing/QA company that helps businesses launch high-quality products by ensuring the integrated APIs meet the industry standards in terms of functionality, reliability, performance, and security.

Basically, API stands for application programming interface and allows us to connect and exchange data between separate program modules. API software has functions, classes, or subprograms by which one software can interact with other software. During API testing, it is essential to make sure it works correctly and fulfills its purpose across different devices, browsers, and operating systems; it can handle the expected load, and also find all threats and vulnerabilities that can cause app hacking.

Software API Testing | Ensure Connectivity between Systems

API Testing Types

API Performance Testing

API performance testing includes functional and load tests aimed to see whether API returns the desired output for a given input and determine the overall system performance under specific conditions. If you are looking for great professionals to conduct such tests.

API Automation Testing

API level testing automation means creating scripts, programs or setting up applications that can test API on a regular basis. It is a major key to performing the testing faster but requires strong technical skills. Only an experienced QA engineer can correctly automate API testing, and we have such experts in our big team.

API Security Testing

Every API should meet security requirements including authentication, permissions, and access controls that should always be safe. Even a single error in API security is more critical than in an individual app, as it affects every software that relies on that API so it can cause serious problems. Rest assured, our testing services are aimed at preventing this.

API Integration Testing

API integration tests simplify testing and make it possible to identify most errors already at the development stage. The goal of integration API testing is to verify that it meets expectations for functionality, reliability, performance, and security. IntelliQuest software testers are ready to ensure the perfect API testing process of your software.

API Testing tools

  • Postman
  • SOAPUI
  • JMeter
  • RestSharp
  • RestAssured
  • Katalon Studio