Upload files with Newman

Newman supports file uploads. For this to work, the file must be located in the same working directory as the collection file. Your file must also include the filename in the src attribute of the request.

// the filename is sample-file.txt
{
    "variables": [],
    "info": {
        "name": "file-upload",
        "_postman_id": "9dbfcf22-fdf4-f328-e440-95dbd8e4cfbb",
        "description": "A set of `POST` requests to upload files as form data fields",
        "schema": "https://schema.getpostman.com/json/collection/v2.0.0/collection.json"
    },
    "item": [
        {
            "name": "Form data upload",
            "event": [
                {
                    "listen": "test",
                    "script": {
                        "type": "text/javascript",
                        "exec": [
                            "var response = JSON.parse(responseBody).files[\"sample-file.txt\"];",
                            "",
                            "tests[\"Status code is 200\"] = responseCode.code === 200;",
                            "tests[\"File was uploaded correctly\"] = /^data:application\\/octet-stream;base64/.test(response);",
                            ""
                        ]
                    }
                }
            ],
            "request": {
                "url": "https://postman-echo.com/post",
                "method": "POST",
                "header": [],
                "body": {
                    "mode": "formdata",
                    "formdata": [
                        {
                            "key": "file",
                            "type": "file",
                            "enabled": true,
                            "src": "sample-file.txt"
                        }
                    ]
                },
                "description": "Uploads a file as a form data field to `https://postman-echo.com/post` using a `POST` request."
            },
            "response": []
        }
    ]
}

The file sample-file.txt must be present in the same working directory as the collection. Run this collection as usual.

$ ls
file-upload.postman_collection.json  sample-file.txt

$ newman run file-upload.postman_collection.json