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 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).