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ASP.NET Web API-Testing Tools

In this tutorials, we will look at many tools that can assist you in testing Web APIs. Web API testing is a important part of the software development process since it ensures their functionality, reliability, and security.

Here are some popular Tools which use mostly in Web API Testing.

ASP.NET web API Testing Tools
  1. Postman - Postman is an API (application programming interface) testing tool that aids in the sending requests, setting up test data, and validating responses of APIs. This utility has almost all of the features that any developer might require. Every month, over 5 million developers utilize it to make API development straightforward and simple. It supports various HTTP methods, authentication methods, and data formats like JSON and XML etc.
  2. Fiddler - Any browser may use Fiddler as a free debugging proxy. It may be used to send, receive, and send back various HTTP requests to our Web API. It can also be used to examine the HTTP answer. Let's try sending an HTTP request to our local Web API and using Fiddler to monitor the response.
  3. Swagger - Swagger UI is a set of open-source tools built around the OpenAPI Specification that can help you design, build, document and consume REST APIs.
  4. RestClient - To test APIs using a REST client, you need a tool or library that allows you to send HTTP requests to the API endpoints and recieve the responses.
  5. Insomnia -Insomnia is an open source desktop program that makes interacting with, developing, debugging, and testing APIs easier. Insomnia combines a user-friendly interface with complex features such as authentication assistance, code creation, and environment variables.
  6. Newman -Newman is a Postman command-line Collection Runner. It enables you run and test Postman Collections from the command line. It's designed to be extensible, so you can link it with your continuous integration (CI) servers and build systems.
  7. SoapUI - SoapUI is the world's leading SOAP and REST Functional Testing tool. SoapUI's user-friendly graphical interface and enterprise-class functionality enable you to quickly and efficiently build and perform automated functional, regression, and load tests.
  8. JMeter - Apache JMeter is a Java-based open-source application for load testing and performance testing. JMeter is Java-based, therefore it may be used on any platform that supports a JVM, including Windows, Linux, and macOS.
  9. RestAssured - REST Assured is a Java package that offers a domain-specific language (DSL) for creating effective, maintainable RESTful API testing. In the parts that follow, I'll demonstrate how to install and setup REST Assured, create and execute REST Assured tests, and use some of its most powerful capabilities.
  10. Karate DSL - Karate is a popular testing framework for Web APIs. API automation testing, performance testing, and load testing are all part of the framework. This framework is written in Java and uses the Apache HTTP client to make HTTP connections. Karate DSL includes a really great connection with the Gatling framework for performance testing.
  11. Dredd - Dredd is a language-independent command-line program for checking API description documents against backend API implementations. Dredd evaluates your API description and checks whether your API implementation responds with the responses given in the documentation step by step.
  12. Cypress - Cypress is a popular E2E testing framework that allows us to do API testing. We do not require any third-party dependencies in order to execute API testing. We only need to install Cypress and begin API testing.

When you choose any above tool depends on your specific requirements, programming language, and project setup.

Why Use Tools of Web API Testing

using API testing tools makes better the testing process, increases test coverage, and helps identify potential issues early in the development cycle. This leads to higher-quality APIs and more reliable applications that provide a better user experience.

The following are some key reasons to use tools for web API testing.

ASP.NET web API Testing Tools
  1. Automation - Automating tests helps you to run hundreds of different and long test cases that would be hard to run manually. It can enhance software quality by increasing the depth of testing. It is helpful since it automates numerous manual testing processes and increases overall accuracy with little or no manual intervention.
  2. Efficiency - Testing Tools help increase efficiency, when we compare it to manual testing, API testing solutions can handle a high number of test cases in a short period of time.
  3. Reusability - Once test case generated, test cases in API testing tools may be reused for other scenarios also, making the test suite easier to maintain and grow.
  4. Consistency -API testing tools provide a consistent testing strategy, decreasing the possibility of human mistakes and guaranteeing that tests are carried out in a standardized manner.
  5. Reporting and Analysis - API testing solutions frequently have built-in reporting and analysis capabilities, offering deep insights into test results, failures, and API testing performance indicators.
  6. Validation of Responses - API testing tools can automatically validate API responses against expected outcomes, ensuring that the API behaves correctly and adheres to the defined contract.
  7. Load Testing - Some API testing tools also offer load testing capabilities, allowing you to assess how the API performs under different loads and identify potential performance bottlenecks.
  8. Improved Collaboration - API testing tools often support collaboration features, allowing multiple team members to work on testing simultaneously and share test cases and results easily each other.


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