*API Automation Tester (2 to 5 yrs) - Real Time Interview Questions*
> Basic API Testing Concepts
1. What is an API? How does it work? 2. What is the difference between SOAP and REST APIs? 3. What HTTP methods do you know? 4. What is the difference between PUT and PATCH? 5. What status code do you expect for a successful POST request? 6. What are idempotent methods? Give examples. 7. What tools have you used for manual API testing?
> JSON & XML Handling
1. How do you validate a JSON response? 2. What is JSONPath and how is it different from XPath? 3. How do you parse nested JSON?
> API Automation with Java + RestAssured
1. How do you automate a GET and POST API using RestAssured? 2. What are the different ways to pass headers, params, and body in RestAssured? 3. How do you validate response status code, headers, and body in RestAssured? 4. How do you implement data-driven testing in API automation? 5. How do you log request and response details in RestAssured? 6. How do you reuse request specifications across multiple tests? 7. What is the use of RequestSpecification and ResponseSpecification in RestAssured? 8. How do you handle token-based authentication in your API tests?
> Real-time Scenarios
1. How do you validate an API that returns a dynamic value (e.g., timestamps, IDs)? 2. How do you chain API requests (using data from one API in another)? 3. Have you worked with file upload/download in API testing? 4. What’s your approach to API versioning in automation?
> Framework and Integration
1. Have you built or worked on any API Automation Framework? 2. How do you integrate API tests with CI tools like Jenkins? 3. How do you generate API reports? 4. Have you used TestNG/JUnit with API tests? What’s the structure?
> Authentication & Security
1. What are different types of API authentication (Basic, OAuth 2.0, JWT)? 2. How do you pass OAuth tokens in API requests? 3. How do you handle token expiration in your framework?
> Advanced Concepts
1. What is schema validation? How do you perform it in RestAssured? 2. How do you handle rate limiting and throttling in APIs? 3. Have you validated APIs using Swagger or Postman Collection Runner? 4. What are contract tests? Have you heard of tools like Pact?
> Debugging & Troubleshooting
1. What do you do when an API test fails intermittently? 2. How do you differentiate if the failure is due to test code or the actual API? 3. How do you handle retry logic in API testing?
> Behavioral & Experience-based
1. Can you walk me through a recent API testing challenge you faced? 2. Have you worked with microservices? How did you test their APIs? 3. How do you prioritize which APIs to automate first?
EverythingsProgramming Activity
*API Automation Tester (2 to 5 yrs) - Real Time Interview Questions*
> Basic API Testing Concepts
1. What is an API? How does it work?
2. What is the difference between SOAP and REST APIs?
3. What HTTP methods do you know?
4. What is the difference between PUT and PATCH?
5. What status code do you expect for a successful POST request?
6. What are idempotent methods? Give examples.
7. What tools have you used for manual API testing?
> JSON & XML Handling
1. How do you validate a JSON response?
2. What is JSONPath and how is it different from XPath?
3. How do you parse nested JSON?
> API Automation with Java + RestAssured
1. How do you automate a GET and POST API using RestAssured?
2. What are the different ways to pass headers, params, and body in RestAssured?
3. How do you validate response status code, headers, and body in RestAssured?
4. How do you implement data-driven testing in API automation?
5. How do you log request and response details in RestAssured?
6. How do you reuse request specifications across multiple tests?
7. What is the use of RequestSpecification and ResponseSpecification in RestAssured?
8. How do you handle token-based authentication in your API tests?
> Real-time Scenarios
1. How do you validate an API that returns a dynamic value (e.g., timestamps, IDs)?
2. How do you chain API requests (using data from one API in another)?
3. Have you worked with file upload/download in API testing?
4. What’s your approach to API versioning in automation?
> Framework and Integration
1. Have you built or worked on any API Automation Framework?
2. How do you integrate API tests with CI tools like Jenkins?
3. How do you generate API reports?
4. Have you used TestNG/JUnit with API tests? What’s the structure?
> Authentication & Security
1. What are different types of API authentication (Basic, OAuth 2.0, JWT)?
2. How do you pass OAuth tokens in API requests?
3. How do you handle token expiration in your framework?
> Advanced Concepts
1. What is schema validation? How do you perform it in RestAssured?
2. How do you handle rate limiting and throttling in APIs?
3. Have you validated APIs using Swagger or Postman Collection Runner?
4. What are contract tests? Have you heard of tools like Pact?
> Debugging & Troubleshooting
1. What do you do when an API test fails intermittently?
2. How do you differentiate if the failure is due to test code or the actual API?
3. How do you handle retry logic in API testing?
> Behavioral & Experience-based
1. Can you walk me through a recent API testing challenge you faced?
2. Have you worked with microservices? How did you test their APIs?
3. How do you prioritize which APIs to automate first?
3 months ago | [YT] | 1