Asked by: Aneliya Lencina
Asked in category: technology and computing, web development
Last Updated: 13th May 2024
Questions for interview about API testing
Common Questions and Answers for Web API Testing Interviews
| UNIT Testing | API Testing |
|---|---|
| Unit testing usually takes place before code is added to the build. | API Testing takes place after the build has been ready for Testing. |
| This testing form includes the Source code. | This testing does not include source code. |
What is an API interview question?
The most frequently asked questions in a Web API testing interview is about testing methods. These are Security and Penetration testing that validates all types of authentication. Automation testing to create and execute scripts that need regular API requests. Integration testing and Web UI testing.
What is the best tool to test APIs? Top API Testing Tools 2020 (Updated List)
- SoapUI. SoapUI allows users to easily test APIs and Web Services using a headless functional tool.
- Postman.
- Katalon Studio.
- Tricentis Tosca.
- Apigee.
- JMeter.
- Rest-Assured.
- Assertible.
What then is the purpose of API testing?
API testing is the process of testing application programming interfaces (APIs), both directly and as part integration testing. This allows you to see if they are up to your expectations in terms of functionality, reliability and performance. API testing takes place at the message layer, since APIs do not have a GUI.
What questions are asked during a testing interview?
Top Manual Test Interview Questions and Answers
- What is software testing?
- When is it time to stop testing?
- Video.
- What does validation and verification mean in software testing?
- What is static testing?
- Black-box testing.
- What is a test program and what do they include?
17 Related Question Answers Found
What are the types of API testing?
API Testing Types
- Validation Testing. Validation testing occurs among the final steps and plays an essential role in the development process.
- Functional testing. Includes testing particular functions in the codebase.
- UI testing.
- Security testing.
- Load testing.
- Runtime and error detection.
- Penetration testing.
- Fuzz testing.
What is REST API in interview?
RESTful Web services - Interview Questions
- GET − Provides a read only access to a resource.
- PUT − Used to create a new resource.
- DELETE − Ued to remove a resource.
- POST − Used to update a existing resource or create a new resource.
- OPTIONS − Used to get the supported operations on a resource.
How do you test an API?
Best Practices of API Testing:
- Test cases should be grouped by test category.
- On top of each test, you should include the declarations of the APIs being called.
- Parameters selection should be explicitly mentioned in the test case itself.
- Prioritize API function calls so that it will be easy for testers to test.
What is API used for?
An application program interface (API) is a set of routines, protocols, and tools for building software applications. Basically, an API specifies how software components should interact. Additionally, APIs are used when programming graphical user interface (GUI) components.
Why is REST API stateless?
Being stateless makes REST APIs less complex – by removing all server-side state synchronization logic. A stateless API is also easy to cache as well. The server never loses track of “where” each client is in the application because the client sends all necessary information with each request.
Where is REST API used?
With cloud use on the rise, APIs are emerging to expose web services. REST is a logical choice for building APIs that allow users to connect and interact with cloud services. RESTful APIs are used by such sites as Amazon, Google, LinkedIn and Twitter.
How does an API work?
API stands for Application Programming Interface. An API is a software intermediary that allows two applications to talk to each other. In other words, an API is the messenger that delivers your request to the provider that you're requesting it from and then delivers the response back to you.
What is an API gateway?
An API gateway is an API management tool that sits between a client and a collection of backend services. An API gateway acts as a reverse proxy to accept all application programming interface (API) calls, aggregate the various services required to fulfill them, and return the appropriate result.
What is Agile methodology in testing?
A software testing practice that follows the principles of agile software development is called Agile Testing. Agile is an iterative development methodology, where requirements evolve through collaboration between the customer and self-organizing teams and agile aligns development with customer needs.
What is an example of an API?
An Application Programming Interface (API) is a tool set that programmers can use in helping them create software. An example is the Apple (iOS) API that's used to detect touchscreen interactions. APIs are tools. They allow you as a programmer to deliver solid solutions fairly rapidly.
Is API testing easy?
Since API test execution is fast, stable, and small enough, it is easy to add more tests into the current testing process with minimum risks. This is only possible with automated API testing tools that come with features like: Integration with test management tools and defect tracking tools.
What is API testing for beginners?
API testing is a type of integration testing that is performed to test the API to validate its functionality, reliability, performance, and security of the application for which API is used. In this testing, the APIs and the integrations they enable are tested.
How do you build an API?
It all starts with coming up with the right plan.
- Plan. Just like a contractor relies on a blueprint when breaking ground on a new building, you'll need to put in a plan in place before you break ground on your API.
- Build.
- Inspect.
- Describe and document.
- Put it on the market.
What are the benefits of API testing?
API testing is the only way to provide truly secure, reliable and scalable connections between platforms. Testing provides these benefits:
- Access to application without user interface.
- Protection from malicious code and breakage.
- Time Efficiency vs.
- Cost Effective / Reduces Testing Cost.
- Technology Independent.
What is an API test strip?
API test strips consists of wells containing dehydrated substrates to detect enzymatic activity, usually related to fermentation of carbohydrate or catabolism of proteins or amino acids by the inoculated organisms. A bacterial suspension is used to rehydrate each of the wells and the strips are incubated.
How do you test a database?
Database tests are typically a three-step process:
- Setup the test. You need to put your database into a known state before running tests against it.
- Run the test. Using a database regression testing tool, run your database tests just like you would run your application tests.
- Check the results.
How do you manually test API test cases?
API Testing Best Practices:
- Test for the expected results.
- Add stress to the system by sending series of API load tests.
- Group API test cases by test category.
- Create test cases with all possible inputs combinations for complete test coverage.
- Prioritize API function calls to make it easy to test.
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