![]() ![]() Having a command-line tool for Postman makes it a great asset to teams who utilize continuous integration systems. If your pre-request scripts or test scripts have syntax errors, Newman will show some error responses as well. ![]() If you have test code written within your requests in Postman, Newman shows whether your tests passed or not, or at a minimum, it will just call your requests. The second method uses the Postman API to fetch collections and environments described in this post. A common method is to export your environments and collections in JSON format and using those files for Newman to run these endpoints whenever you like. There are two general ways to run Newman. In this blog post, I’ll share how I used Newman to power my chat bot. Yes, it would have been easier just to call those APIs directly from the codebase where I wrote my bot, but I wanted to explore how to use Newman in new and interesting ways. When I recently livestreamed on Twitch about building a chat bot to interact with people watching my “learning in public” broadcasts, I wanted to make some chat commands that would retrieve data from API endpoints-like fetching a joke, or the weather in a given location. And yes, it is named after the character in the comedy series “Seinfeld,” portrayed by actor Wayne Knight. Newman is Postman’s tool that allows you to run collections of requests, and their associated scripting, from the command line.
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