API Testing

What is API testing, and why is it important?

API testing evaluates the functionality, reliability, performance, and security of APIs. It’s crucial because APIs are often the backbone of applications, enabling communication between different software systems.

Explain the difference between REST and SOAP APIs.

• REST (Representational State Transfer) is an architectural style that uses standard HTTP methods and is typically lightweight. SOAP (Simple Object Access Protocol) is a protocol with strict standards, often relying on XML for message formatting.

What tools can you use for API testing?

• Common tools include Postman, SoapUI, JMeter, RestAssured, and Insomnia.

Describe the typical HTTP methods used in RESTful APIs.

• The main methods are:

  • GET: Retrieve data

  • POST: Create data

  • PUT: Update data

  • DELETE: Remove data