![]() ![]() This ensures that the regression issues can be avoided as you keep expanding your application. These tests can run on demand using the collection runner, or they can be included in your CI/ CD pipeline using Postman’s CLI tool, Newman. The proxy session can now be saved as a collection where you can add test cases along response time, size, etc. Generate an automation test out of the session Now that your team was able to fix the issue after you performed a proper analysis, you want to ensure that such issues do not occur again. This significantly reduces their efforts as they spend minimal time reproducing the error and can quickly fix the issue. While using Postman, for testing purposes, one doesn't need to write any HTTP client network code. It is a simple Graphic User Interface for sending and viewing HTTP requests and responses. The teammates from here on can refer to the session, see the particular requests that are having the issues, and replay the same requests within Postman by just clicking on the request URL in the session. Postman is a standalone software testing API (Application Programming Interface) platform to build, test, design, modify, and document APIs. Give a proper name to your session and ask your developers to refer to the same in the History of your Postman workspace. What next? Sharing the session with your teammates Let’s say you find that for a certain group of your test user IDs the response time and response size are unusually high. When analyzing the traffic, you and your teammates can look at various attributes, such as type of requests, response size, response time, and more. You may find it difficult to debug scenarios alone, so your fellow teammates can join you as they see the session in real time in the History while you are running these test scenarios. Pro tip: We suggest running your scenario completely and capturing the traffic corresponding to it in one session. The session will allow you to bind the traffic in a certain timeframe. Postman provides first-class support for Socket.IO. And, if you face issues connecting to your WebSocket API, Postman shows you detailed information of the handshake process. You can start capturing traffic by connecting to the proxy and starting a debugging session. Postman's WebSockets feature has a powerful interface that allows you to highly customize and debug the first connection (handshake) call that you make with the server. The Postman proxy allows you to capture HTTP traffic flowing between your frontend and backend. To do a proper RCA of the issue, you would need to know the data that is flowing between the frontend and the backend of your application. So what’s next? Intercept the traffic using the Postman proxy ![]() Doing a proper root cause analysis (RCA) is required so that the issue can be discussed and subsequently fixed. You encounter some issue that is happening during the customer login flow. Let’s consider a scenario where you want to test an e-commerce application that you and your team are building. Postman’s proxy allows you to intercept the traffic between your web app and backend, enabling you to do a clear-box testing of your web app. While the APIs and UI can be standalone-tested, it’s important to test both in conjunction and observe the impact that various user interactions have on API flows. ![]() For any web application developer, it’s important to know and test the APIs that power an app. ![]()
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