api testing

What is API and Services Test Automation?

Application development today is not possible without application programming interfaces. Based on a sort of software testing known as API Testing, these APIs are validating. The goal of API testing is to evaluate the programming interfaces’ functionality, reliability, performance, and security. Instead of demonstrating typical inputs and outputs while testing APIs, you can record the answer by sending calls utilizing software tools.

Data transfer and communication between two software systems are made possible through APIs. API testing is performed by testers. End-to-end functionality testing is done by testers through API testing. The API Testing will be done by the QA Team after the app is prepared.

API Testing Strategies

  • Understanding the scope and end-to-end functionality of the API.
  • Implementing the testing into practice using methods like equivalence classes, boundary value analysis, error guessing, and creating API test cases.
  • Applying appropriate input parameters for the API.
  • Executing the test cases and comparing the output values are valid or not.

Testing Methods

API Automation Testing has several methods other than the SDLC process. It includes:

  • Documentation – It is the part of final deliverables and it’s the responsibility of the tester to check the documentation is adequate and contains enough data.
  • Discovery Testing – The set of calls in the document is manually executed by testers.
  • Automated Testing – To execute the API regularly, create a set of scripts or use tools.
  • Security Testing – This testing covers the type of authentication required and the encryption of the sensitive data.
  • Usability Testing – It verifies the API is functional and user-friendly on other platforms also.

The Best Way to Execute API Test Automation

Automatically running test cases to improve software quality is called Test Automation. The tests should meet some criteria in order to meet the test automation so that it will save time, money, and effort.

Automation Testing

Image Source: https://www.educba.com/automation-testing/

Ready API

Automatically running test cases to improve software quality is called Test Automation. The tests should meet some criteria in order to meet the test automation so that it will save time, money, and effort.

A non-code platform testing tool called Ready API makes the automatic testing procedure simpler. In one centralized interface, it allows leading tools such as Ready API Performance, Ready API Virtualization, and Ready API Test to perform security, functional, GraphQL, SOAP, and load testing of RESTful, and other web services. 

A powerful virtualization solution is available to simulate Web services and APIs. Ready API accelerates all the services within the CI/CD pipeline.


Image Source: https://smartbear.com/blog/new-names-one-brand-readyapi/

Key Features

  1. Code Reusability.
  2. Removes unwanted dependencies.
  3. Functional tests and job queuing perform parallelly.
  4. Providing Native Support for Leading third-party integrations such as git, Jenkins, Docker, Azure, etc.
  5. Can be collaborated with any environment.


One of the best open-source browser-based API testing tools, with no-code test automation capabilities. This API tool allows anyone on the testing team to test web applications and mobile apps without prior coding knowledge. Using this top most open source tool, you can test the application in different cross platforms, applications written using different programming languages, different operating systems, etc. Preflight is not popular in API automation testing but also in various testing areas such as end-to-end testing and regression testing, User Interface Testing, and Functional Testing.

Key Features

  1. There is no need to install plugins or other proxies because it is a browser-based automation testing tool.
  2. The auto-recording feature allows for the reuse of test cases and the replay of the testing process as needed.
  3. Parallel execution allows for more thorough testing in less time.
  4. The ability to use custom variables is provided.
  5. It has awesome AI features such as easy workflow, context awareness, and object detection methodologies to successfully perform a test.
  6. Any member can run testing without prior knowledge because it is a no-code tool.


Testim is one of the most well-known API automation testing tools. It has amazing AI features that allow the tool to perform a variety of tests such as test suite execution, maintenance, and creation. 

Key Features

  1. It is possible to create API actions and validations for standard testing activities.
  2. Isolate the UI testing by obtaining data from the API.
  3. It enables a never-ending learning approach for every test suite execution and maintenance activity.
  4. Both UI and API tests can run concurrently.


A Chrome plugin has become the most useful tool for both manual and automated testing processes. Collections, built-in tools, and workspace are the three major components of API development. 

Run requests, test, debug, mock, document, monitor API, and create test automation are the major roles of collection. The workspace parts allow the team to complete all the collaboration works such as setting permissions, sharing collections, and managing participation in multiple workspaces regardless of team size.  It offers services across windows as well as Mac OS. 

Key Features

  1. It enables the testing of both automated and exploratory tests.
  2. It supports Swagger as well as RAML integrations.
  3. Excellent interface for extracting all modern web APIs.
  4. It makes it easier to use rest services.


It is a continuous cloud-based testing platform. This tool allows API test automation without writing code. Using the lifecycle aspects such as design, planning, test generation and execution testing the team performs Automatic testing through ACCELQ. It automates the testing with automated test design, API Regression planning, 360 tracking, codeless automation, and complete test management.

Key Features

  1. Cloud-based no-code test automation API.
  2. Allows API and UI testing in the same flow.
  3. Through business process allows Regression suite planning.
  4. Management of Dynamic Environment.
  5. Full visibility in integrating execution tracking and defect tracking.

Katalon Platform

It is an all-in-one powerful automation tool for API, web, mobile, and desktop testing. This is simple to deploy on all platforms. A unique capability of the Katalon platform is combining UI and API/Web services for multiple environments.

Key Features

  1. Allows CI/CD Integration.
  2. Capable of handling SOAP and REST Requests.
  3. Supports both automated and exploratory testing.
  4. Code templates are pre-built and customizable.
  5. Allows a data-driven approach.

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