How Do You Test API?

What is API testing for beginners?

API Testing is critical for the software systems to perform at high-quality.

This testing involves protocols and standards that are are not involved in any other kind of testing.

The developers usually test the basic functionality while testers perform QA of functionality, performance, and security of APIs..

Is API testing easy?

Therefore, API testing task is easy to be underestimated. … It is because the returned data have similar structures, but not the same in a testing project. It will be difficult to decide if you should verify the JSON/XML data key by key, or using object mapping to leverage the power of programming language.

What are the common API testing types?

9 Types of Tests For Holistic API TestingValidation Testing. Validation testing is one of the last steps in the development process, but it is one of the more important tests that can be run. … Functional Testing. … UI Testing. … Load Testing. … Runtime/Error Detection. … Security Testing. … Penetration Testing. … Fuzz Testing.More items…•

How do I test Microservices API?

One of the most powerful automated testing approaches is to use software that is able to directly test your API by simulating the actions of a real user. If this is combined with a “staging” version of the real user databases, this can provide a powerful tool for testing microservices.

Is REST API a tool?

#5) REST-Assured It is an open-source tool. XML and JSON Requests/Responses are supported by REST-Assured.

How do you manually test API test cases?

Test cases for API TestingValidate the keys with the Min. … Keys verification. … Have a test case to do XML, JSON Schema validation.Verify the Parse the Response data.Verify the JSON Schema validation, Verify the Field Type,Verify the Mandatory Fields.Valid Response headers & Negative Testcases response.More items…•

What is tested in API testing?

API testing involves testing the application programming interfaces (APIs) directly and as part of integration testing to determine if they meet expectations for functionality, reliability, performance, and security. Since APIs lack a GUI, API testing is performed at the message layer.

How do I test my browser API?

Open Chrome and navigate to the page you would like to test. Right-click anywhere on the page and select Inspect. This will open the developer console.

What is the best tool for API testing?

Top 25+ API Testing ToolsRapidAPI. The list of best API testing tools starts with RapidAPI. … REST-assured. REST-assured is considered as one of the best tools for testing APIs in Java. … Postman. After REST-assured, the next API testing tool is Postman. … Paw. … SoapUI. … Katalon Studio. … JMeter. … Karate DSL.More items…•

What are the types of API testing?

The Types of API Testing:Unit Testing.Integration Testing. Integration testing is the most often used form of API testing, as APIs are at the center of most integrations between internal or third-party services.End-to-End Testing.Performance Testing.

What are the API tools?

Katalon Studio. Katalon Studio is a free test automation tool for API, Web, Desktop App and Mobile applications. … SoapUI. SoapUI is a headless functional testing tool dedicated to API testing, allowing users to test REST and SOAP APIs and Web Services easily. … Postman. … Tricentis Tosca. … Apigee. … JMeter. … Rest-Assured. … Assertible.More items…

How do I use API?

Start Using an APIMost APIs require an API key. … The easiest way to start using an API is by finding an HTTP client online, like REST-Client, Postman, or Paw. … The next best way to pull data from an API is by building a URL from existing API documentation.