The primary difference between these two commands is that the Postman CLI includes the word “collection” before the “run” instruction. $ postman collection run my_collection.json For example, if you called your exported collection file “my_collection.json”, then you would run the following commands: Once your collection is exported, you can run it with either CLI tool. You can export a Postman environment in JSON format as well, but you will need to follow best security practices for shared secret data, such as API keys in the export environment or collection variables. The Postman application will allow you to export your collection in JSON format. Additionally, both tools can use exported or remotely-retrieved environments from a Postman workspace. Similarities between the Postman CLI and NewmanĪt a high level, both CLI tools operate in a similar fashion: they can run a collection that has been exported in JSON format, or they can use a Postman API key to retrieve the collection remotely. Let’s look at some of the similarities and differences between Newman and the Postman CLI. Still, there are some important differences between the tools themselves and their capabilities that can help you determine which one will best suit your needs. If an error occurs, or if some test expectations are not met within the JavaScript code, that collection request is halted and the CLI tool will move on to the next request. If any test code exists within the collection, that JavaScript code will be executed, as well. For instance, both CLI tools allow you to run the requests in a Postman Collection. These CLI tools operate in very similar ways, as we will see in this blog post. Postman’s original CLI tool was called Newman (yes, it was named after the “Seinfeld” character), and in the fall of 2022, we introduced the new Postman CLI as part of Postman v10. To extend our testing capabilities, we offer command-line interface (CLI) tools that can be used for local scripting or in CI/CD environments. API testing is a big part of Postman’s history, and it continues to be a primary use of our platform.
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