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Overview of APIs and Testing:- API (Application Programming Interface) allows software applications to communicate 🤝. API Testing verifies functionality, reliability, and security ✅. REST API is a web service that uses standard HTTP methods and data formats like JSON 📡. In contrast, SOAP API uses XML and is more complex 📜. Key aspects to test in APIs include functionality, performance, security, and error handling 🔍. HTTP is the protocol for data transfer, with methods like GET (retrieve) 📥, POST (create) ➕, PUT (update) 🔄, PATCH (partial update) ✏️, DELETE (remove) ❌, and OPTIONS (methods supported) ⚙️. For testing, tools like Postman, SoapUI, and JMeter are used 🛠️. In Postman, create requests, validate responses, and automate tests for efficiency 📊. #apitesting #qa

Here are the 10 most commonly asked API Testing interview questions and answers: ① What is API Testing? API Testing involves verifying application programming interfaces to ensure they meet functionality, reliability, performance, and security requirements. ② What is the difference between REST and SOAP APIs? REST: Lightweight, uses JSON or XML, stateless, and works over HTTP/HTTPS. SOAP: Protocol-based, uses XML, supports stateful operations, and works over HTTP/HTTPS, SMTP, etc. ③ Explain common HTTP methods used in API testing. GET: Retrieve data from the server. POST: Submit data to the server to create a resource. PUT: Update or replace an existing resource. DELETE: Remove a resource from the server. ④ What are the standard HTTP status codes, and what do they mean? 200: OK (Success). 400: Bad Request (Client Error). 401: Unauthorized (Authentication Needed). 500: Internal Server Error (Server Issue). ⑤ What is the difference between API Testing and Unit Testing? API Testing: Validates end-to-end business logic and data flow across systems. Unit Testing: Focuses on individual components of code. ⑥ Which tools are commonly used for API Testing? Postman: For manual testing and script automation. Rest Assured: Java-based library for automated API testing. SoapUI: Used for SOAP and REST API testing. ⑦ What are the different types of API authentication? OAuth: Token-based secure authentication. Basic Auth: Encoded username and password. API Key: Unique identifier to access APIs. ⑧ What are some best practices for writing API test cases? Define endpoint coverage. Test for valid and invalid inputs. Validate response status codes, headers, and payloads. Include edge case scenarios. ⑨ How do you handle errors in APIs? Validate error codes like 4xx (client errors) and 5xx (server errors). Ensure appropriate error messages are returned. Test scenarios for timeout and rate-limiting issues. ⑩ What is a Mock API, and why is it used? Mock APIs simulate the behavior of a real API, allowing testing when the actual API is unavailable or under development. #sqa #apitesting #interviewquestions #qajobsinlahore 🔗 Follow Ahmed Hassan for more insights and updates on Quality Assurance, automation testing, and tips to enhance software quality.

Here are the 10 most commonly asked API Testing interview questions and answers: ① What is API Testing? API Testing involves verifying application programming interfaces to ensure they meet functionality, reliability, performance, and security requirements. ② What is the difference between REST and SOAP APIs? REST: Lightweight, uses JSON or XML, stateless, and works over HTTP/HTTPS. SOAP: Protocol-based, uses XML, supports stateful operations, and works over HTTP/HTTPS, SMTP, etc. ③ Explain common HTTP methods used in API testing. GET: Retrieve data from the server. POST: Submit data to the server to create a resource. PUT: Update or replace an existing resource. DELETE: Remove a resource from the server. ④ What are the standard HTTP status codes, and what do they mean? 200: OK (Success). 400: Bad Request (Client Error). 401: Unauthorized (Authentication Needed). 500: Internal Server Error (Server Issue). ⑤ What is the difference between API Testing and Unit Testing? API Testing: Validates end-to-end business logic and data flow across systems. Unit Testing: Focuses on individual components of code. ⑥ Which tools are commonly used for API Testing? Postman: For manual testing and script automation. Rest Assured: Java-based library for automated API testing. SoapUI: Used for SOAP and REST API testing. ⑦ What are the different types of API authentication? OAuth: Token-based secure authentication. Basic Auth: Encoded username and password. API Key: Unique identifier to access APIs. ⑧ What are some best practices for writing API test cases? Define endpoint coverage. Test for valid and invalid inputs. Validate response status codes, headers, and payloads. Include edge case scenarios. ⑨ How do you handle errors in APIs? Validate error codes like 4xx (client errors) and 5xx (server errors). Ensure appropriate error messages are returned. Test scenarios for timeout and rate-limiting issues. ⑩ What is a Mock API, and why is it used? Mock APIs simulate the behavior of a real API, allowing testing when the actual API is unavailable or under development. #sqa #apitesting #interviewquestions #qajobsinlahore 🔗 Follow Ahmed Hassan for more insights and updates on Quality Assurance, automation testing, and tips to enhance software quality.

More and More applications are interdependent heavily on multiple services. Testing has taken enormous significance in ensuring these applications do not malfunction and any type of errors, failures are handled gracefully (graceful exits or graceful transition to alternate service) Your TechValue goes up as you know automation testing, more deeper levels of system integration/cloud integration/ GenAI integration and many more moving parts and failure points. Find your TechValue using https://lnkd.in/d4mcQXxz #automationtesting #apitesting #testing #stresstesting #loadtesting #tech #technology #software

🔍 Understanding Smoke, Sanity, Regression, and Retesting in Software Testing Smoke Testing: A quick "health check" of the app's core features like login, search, or checkout. If any major functionality fails, further testing halts until the issue is resolved. Sanity Testing: Focused on specific areas that were recently updated. After a bug fix or minor change, only the affected feature is tested, ensuring it works without checking the entire application. Regression Testing: This ensures that new changes haven’t broken existing features. After adding a new feature, previously stable functionalities like login or checkout are re-tested to maintain overall app stability. Retesting: Once a bug is fixed, this targets the specific issue to confirm it's resolved. For example, after fixing a form submission error, only that form is re-checked. Summary: Smoke Testing: Quick check of essential features. Sanity Testing: Focused testing of recent updates. Regression Testing: Ensures new updates don’t affect existing functionality. Retesting: Verifies fixed bugs.

Know the types

The Essentials of Backend Testing for Reliable Software Backend testing is a critical component of software quality, ensuring the stability, security, and accuracy of systems that operate behind the scenes. Unlike frontend testing, which focuses on user experience, backend testing validates the "engine" of an application—its databases, servers, APIs, and business logic. Here's a quick overview of what backend testing involves and why it matters: Key Types of Backend Testing 1. Database Testing: Ensures data integrity and performance. 2. API Testing: Validates API endpoints, data exchange, and security protocols. 3. Server-Side Testing: Checks system reliability and performance under various loads. 4. Business Logic Testing: Confirms that workflows and rules function as intended. Top Tools Postman and SoapUI for API testing JMeter and Locust for performance/load testing Cucumber for business logic testing in BDD Best Practices Define clear requirements for accurate tests. Automate repetitive tests to improve efficiency. Integrate tests into CI/CD pipelines to catch issues early. Prioritize security by testing for vulnerabilities. Backend testing has its challenges—like data dependencies and complex logic—but by following best practices and leveraging the right tools, teams can ensure a stable, secure, and high-performance backend. As backend systems become more complex, robust testing is more important than ever for reliable software and an outstanding user experience. #BackendTesting #SoftwareTesting #API #Databases #QualityAssurance

Describing 9 types of API testing. 🔹 Smoke Testing This is done post-API development. Validate that APIs are working and nothing fails. 🔹 Functional Testing This enables a test plan to be generated from the functional requirements and compared with actual results. 🔹 Integration Testing This test integrates a series of API calls and carry out end-to-end tests. The in-service communications and data transfers are evaluated. 🔹 Regression Testing This test makes sure that bug fixes or new features should not break the current behavior of APIs. 🔹 Load Testing This measures the performance of applications through various loads. We can determine the application’s capacity. 🔹 Stress Testing The APIs are specially overloaded to check whether they can function properly. 🔹 Security Testing This certifies the APIs against all potential threats from outside. 🔹 UI Testing This ensures that the UI can interact with these APIs and display data as required. 🔹 Fuzz Testing This sends invalid or unexpected input data to the API and attempts to crash it. It does this by identifying the API vulnerabilities. 🤝Be a part of the Java developer community: 👇 🔶System Design & Software Development: - Rocky Bhatia - Mayank Ahuja - Raul Junco - Saurabh Dashora - Ashish Pratap Singh - Brij kishore Pandey -Chandresh Desai - Neo Kim - Arpit Bhayani - Nelson Djalo - Hina Arora - Mahesh Mallikarjunaiah ↗️ -Gina Acosta Gutiérrez 🔷𝐂𝐨𝐝𝐢𝐧𝐠 & 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐏𝐫𝐞𝐩: - Raj Vikramaditya - Riti Kumari -Anuj Kumar Sharma -Ayushi Sharma 🔶𝐁𝐞𝐜𝐨𝐦𝐞 𝐚 𝐁𝐞𝐭𝐭𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫: - @John Crickett - Jordan Murphy 🧠🦍 - Adrian Stanek - Eric Roby - Shumbul Arifa 🔶𝐂𝐚𝐫𝐞𝐞𝐫 𝐆𝐫𝐨𝐰𝐭𝐡: - Omar Halabieh - Gregor Ojstersek - Sarah Gruneisen 🐉. -Sonal Shukla 🔶Devops -Bharath Kumar Reddy 🔶𝐂# 𝐄𝐱𝐩𝐞𝐫𝐭𝐬: - Jalal Alzebda - Dave Davies Callan - Pavle Davitković - Nikola Knežević 🔶Jobs Darika Jain 🌟image credit: Alex Xu #Telegram https://lnkd.in/dX_xTRgw

Good representation to consider all types of testing scenarios in one GIF for easy revision. It's essential to take all these cases into account when designing and creating test scenarios for robust testing.

Describing 9 types of API testing.