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 How to test API?      1 min read  

# How to test API?

  S  Sindhu D  April 27, 2026   (Updated May 6, 2026)  

 

 

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 Testing an API involves sending specific requests to its endpoints and verifying that the responses meet functional, security, and performance requirements.

**1. Preparatory Steps**

- **Understand API Documentation**: Review the [OpenAPI/Swagger](https://swagger.io/specification/) or RAML documentation to identify available endpoints, required parameters, supported HTTP methods (GET, POST, etc.), and expected response formats.
- **Set Up Environment**: Use a dedicated testing environment with mock data to avoid affecting production.
- **Identify Test Cases**: Create a mix of **positive tests** (valid inputs), **negative tests** (invalid inputs/error handling), and **edge cases** (boundary values).



 

 

 

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 Written by### Sindhu D