Newman postman

Newman postman DEFAULT

Newman for running Postman collection

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Prerequisite:

  • Hope you are already familiar with using the Postman application.

What is Newman ?

Newman is a CLI (command-line interface) tool used for running postman collections. You can use Newman to RUN or TEST collections. This completely depends on how you have written your Postman collection. Newman maintains feature parity with Postman, the collections are executed similar to calling runner in the Postman application.

  • You can use Newman as a runner to run the whole collection or targeted area of the collection. From the below screenshot you can see that. I have an OrderManagement Which again consists of Customer Order and Internal Order. So you can choose to either run the whole “OrderManagement” collection or you can target to exercise a certain folder.

Use case : Example let’s say you received some data in excel sheet and you have to create one hundred customer orders. On behalf of configuring your payload and hitting customer order endpoints for 100 times. Or writing some script to do this magic for you. Newman out of the box provides this feature to import your data and call the endpoints. So with very less effort you will be able to perform this trick in no time.

  • If you have written test cases in the Postman collection. A gist of it can be visualized as below.

After having your tests ready. You can now configure Newman to run as a test automation tool. Which will exercise your test cases and generate the test report.

Why Newman ?

  • Designed keeping extensibility in mind.
  • Easy to integrate with your CI pipeline.
  • Light weight.
  • Provides a rich set of options to customize a run.
  • Extensive documentation.

How to use Newman to run a collection ?

Newman is a Nodejs module. Hence make sure you have Node.js installed. Fire the following command to install Newman globally.

npm install -g newman

Once you have Newman installed and the Postman collection is ready. You can export the collection as shown in the screenshot.

You can configure Newman to run the collection in following ways :

1. newman run [options] <path to the downloaded postman collection file>

I would like to share some bare minimum configuration which you may usually use :

  • your-env-file.json :
    • Is the collection file you exported from your Postman.
  • –environment or -e :
    • Specifies a URL or Path to a Postman Environment. For more about managing environment refer here
  • –iteration-data or -d :
    • Specifies a data file to use for iterations (either json or csv).
    • Depending on the number of records you have in your data your collection will be iterated respectively.
  • –reporters or -r :
    • Specifies the reporters to use for this run. Default reporter is cli which prints the result on STDOUT.
    • You can also provide other options like html, json, htmlextra soon..

If you have noticed in the above image I have used htmlextra as a reporter. Which will use the following nodejs module newman-reporter-html to generate reports. Please refer here for more details on how to install and configure reporter.

Besides this when you execute command newman run –help you will get to see a lot of options which newman provides to configure your run.

2. newman run <url of collection from postman>

Ex: newman run https://www.postman.com/collections/cb208e7e640

This option is when you like to run a collection via a shared link. Postman provides a feature to share your collection via a link the same can be used in the run.

3. Unless you don’t like to run newman as CLI. You can choose to run Newman programmatically as shown in below image.

Conclusion:

We just saw how Simple, Easy, Flexible and Powerful the Newman tool is. Which provides a lot of options to configure your run. Based on how your collection is rigup you can use it to RUN or TEST your collection. Within a few minutes you can set up your test automation tool and also add it to your Continuous Integration pipeline. The newman-reporter-html magically provides beautiful reporting which is great enough to share with your team. You can run Newman via CLI or programmatically and added to that you can use any kind of task runner to configure your test suite.

 

Sours: https://www.devonblog.com/test-automation/newman-for-running-postman-collection/

Running collections on the command line with Newman

Newman is a command-line Collection Runner for Postman. It enables you to run and test a Postman Collection directly from the command line. It is built with extensibility in mind so that you can easily integrate it with your continuous integration servers and build systems.

Newman maintains feature parity with Postman and allows you to run collections the way they are executed inside the collection runner in Postman.

Newman resides in the NPM registry and on GitHub.

newman gif

Getting Started

Newman is built on Node.js. To run Newman, make sure you have Node.js installed.

You can download and install Node.js on Linux, Windows, and macOS.

After you install Node.js, Newman is just a command away. Install Newman from npm globally on your system, which allows you to run it from anywhere.

The easiest way to run Newman is to run it with a collection. You can run any collection file from your file system.

You can export a collection to share as a file.

You can also pass a collection as a URL by sharing it.

Your collection probably uses environment variables. To provide an accompanying set of environment variables, export the template from Postman and run them with the flag.

Options

Newman provides a rich set of options to customize a run. You can retrieve a list of options by running it with the flag.

Utility

OptionDetails
, Output usage information
, Output the version number

Basic setup

OptionDetails
Specify a single folder to run from a collection.
, `--environment [fileURL]`
, Specify a data file to use either json or csv
, Specify a Postman globals file as JSON [file]
, Define the number of iterations to run

Request options

OptionDetails
Specify a delay (in ms) between requests [number]
Specify a request timeout (in ms) for a request

Misc.

OptionDetails
Stops the runner when a test case fails
Disable terminal output
Disable colored output (auto|on|off) (default: "auto")
, Disable strict ssl
, Continue running tests even after a failure, but exit with
Disable automatic following of responses
Show detailed information of collection run and each request sent

Use the option to set the number of iterations to run the collection.

To provide a different set of data, such as variables for each iteration, you can use the to specify a JSON or CSV file.

For example, a data file such as the one shown below runs 2 iterations, with each iteration using a set of variables.

Here's an example of the CSV file for the above set of variables:

Newman, by default, exits with a status code of 0 if everything runs well, such as without any exceptions.

Continuous integration tools respond to these exit codes and correspondingly pass or fail a build.

You can use or to override the default exit code for the current run.

You can use the flag to tell Newman to halt on a test case error with a status code of 1, which can then be picked up by a CI tool or build system.

Example collection with failing tests

The results of all tests and requests can be exported into a file. Use the JSON reporter and a file name to save the output into a file.

Note: Newman allows you to use all libraries and objects that Postman supports to run tests and pre-request scripts.

Using Newman with CI/CD

By default, Newman exits with a status code of 0 if everything runs as expected with no exceptions. You can configure your continuous integration tools to respond to Newman's exit codes and correspondingly pass or fail a build. You can also utilize the flag to make Newman stop the run if it encounters a test case error with a status code of 1, which can then be picked up by your CI tool or build system.

File uploads

Newman also supports file uploads. For this to work correctly, upload the file in the relative location specified in the collection. For instance, review this collection:

The file must be present in the current working directory as the collection. Run this collection as usual.

Library

Newman has been built as a library from the ground up. It can be extended and used in various ways. You can use it as follows in your Node.js code:

Custom reporters

Custom reporters come in handy when one would want to generate collection run reports that cater to very specific use cases. For instance, logging out the response body when a request (or its tests) fail, and so on.

Building custom reporters

A custom reporter is a Node module with a name of the form . To create a custom reporter:

  1. Navigate to a directory of your choice, and create a blank npm package with .

  2. Add an file, that exports a function of the following form:

  1. Publish your reporter using , or use your reporter locally. See the usage instructions for more information.

Scoped reporter package names like are also supported.

Using custom reporters

In order to use the custom reporter, it will have to be installed first. For instance, to use the Newman TeamCity reporter, install the reporter package:

Note that the name of the package is of the form , where is the actual name of the reporter. The installation should be global if Newman is installed globally, local otherwise. Run with the flag for a global installation.

To use local (non-published) reporters, run the command instead.

Use the installed reporter, either via the CLI, or programmatically. Here, the prefix is not required while specifying the reporter name in the options.

Scoped reporter packages must be specified with the scope prefix. For instance, if your package name is , you must specify the reporter with .

CLI:

Programmatically:

In both cases above, the reporter options are optional.

For the complete documentation, see the Newman README.

For more information about collection runs, see:

Sours: https://learning.postman.com/docs/running-collections/using-newman-cli/command-line-integration-with-newman/
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newman the cli companion for postmanBuild Statuscodecov

Newman v5 has been released. Check the migration guide and changelog for more details.


Manage all of your organization's APIs in Postman, with the industry's most complete API development environment.

Newman is a command-line collection runner for Postman. It allows you to effortlessly run and test a Postman collection directly from the command-line. It is built with extensibility in mind so that you can easily integrate it with your continuous integration servers and build systems.

Table of contents

  1. Getting Started
  2. Usage
    1. Using Newman CLI
    2. Using Newman as a Library
    3. Using Reporters with Newman
  3. Command Line Options
    1. newman-options
    2. newman-run
    3. SSL
    4. Configuring Proxy
  4. API Reference
    1. newman run
    2. Run summary object
    3. Events emitted during a collection run
  5. Reporters
    1. Configuring Reporters
    2. CLI Reporter
    3. JSON Reporter
    4. JUnit Reporter
    5. HTML Reporter
  6. External Reporters
    1. Using External Reporters
    2. Creating Your Own Reporter
  7. File Uploads
  8. Using Newman with the Postman API
  9. Using Newman in Docker
  10. Using Socks Proxy
  11. Migration Guide
  12. Compatibility
  13. Contributing
  14. Community Support
  15. License

Getting started

To run Newman, ensure that you have Node.js >= v10. Install Node.js via package manager.

Installation

The easiest way to install Newman is using NPM. If you have Node.js installed, it is most likely that you have NPM installed as well.

This installs Newman globally on your system allowing you to run it from anywhere. If you want to install it locally, Just remove the flag.

Using Homebrew

Install Newman globally on your system using Homebrew.

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Usage

Using Newman CLI

The command allows you to specify a collection to be run. You can easily export your Postman Collection as a json file from the Postman App and run it using Newman.

$ newman run examples/sample-collection.json

If your collection file is available as an URL (such as from our Cloud API service), Newman can fetch your file and run it as well.

$ newman run https://www.getpostman.com/collections/631643-f695cab7-6878-eb55-7943-ad88e1ccfd65-JsLv

For the complete list of options, refer the Command Line Options section below.

terminal-demo

Using Newman as a Library

Newman can be easily used within your JavaScript projects as a Node.js module. The entire set of Newman CLI functionality is available for programmatic use as well. The following example runs a collection by reading a JSON collection file stored on disk.

constnewman=require('newman');// require newman in your project// call newman.run to pass `options` object and wait for callbacknewman.run({collection: require('./sample-collection.json'),reporters: 'cli'},function(err){if(err){throwerr;}console.log('collection run complete!');});

For the complete list of options, refer the API Reference section below.

Using Reporters with Newman

Reporters provide information about the current collection run in a format that is easy to both: disseminate and assimilate. Reporters can be configured using the or options. Inbuilt reporters in newman are: , , , and .

CLI reporter is enabled by default when Newman is used as a CLI, you do not need to specifically provide the same as part of reporters option. However, enabling one or more of the other reporters will result in no CLI output. Explicitly enable the CLI option in such a scenario. Check the example given below using the CLI and JSON reporters:

$ newman run examples/sample-collection.json -r cli,json

For more details on Reporters and writing your own External Reporters refer to their corresponding sections below.

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Command Line Options

  • ,
    Show command line help, including a list of options, and sample use cases.

  • ,
    Displays the current Newman version, taken from package.json

  • ,
    Specify an environment file path or URL. Environments provide a set of variables that one can use within collections. Read More

  • ,
    Specify the file path or URL for global variables. Global variables are similar to environment variables but have a lower precedence and can be overridden by environment variables having the same name.

  • ,
    Specify a data source file (JSON or CSV) to be used for iteration as a path to a file or as a URL. Read More

  • ,
    Specifies the number of times the collection has to be run when used in conjunction with iteration data file.


  • Run requests within a particular folder/folders or specific requests in a collection. Multiple folders or requests can be specified by using --folder multiple times, like so: --folder f1 --folder f2 --folder r1 --folder r2.


  • Set the path of the working directory to use while reading files with relative paths. Default to current directory.


  • Prevents reading of files situated outside of the working directory.


  • The path to the file where Newman will output the final environment variables file before completing a run.


  • The path to the file where Newman will output the final global variables file before completing a run.


  • The path to the file where Newman will output the final collection file before completing a run.


  • Specify the time (in milliseconds) to wait for the entire collection run to complete execution.


  • Specify the time (in milliseconds) to wait for requests to return a response.


  • Specify the time (in milliseconds) to wait for scripts to complete execution.

  • ,
    Disables SSL verification checks and allows self-signed SSL certificates.


  • Prevents newman from automatically following 3XX redirect responses.


  • Specify the extent of delay between requests (milliseconds).


  • Specify the file path for a JSON Cookie Jar. Uses to deserialize the file.


  • The path to the file where Newman will output the final cookie jar file before completing a run. Uses 's serialize method.


  • Specify whether or not to stop a collection run on encountering the first test script error.
    Can optionally accept modifiers, currently include and .
    allows you to skip the entire collection run in case an invalid folder was specified using the option or an error was encountered in general.
    On the failure of a test, would gracefully stop a collection run after completing the current test script.

  • ,
    Specify whether or not to override the default exit code for the current run.


  • Enable or Disable colored CLI output. The color value can be any of the three: , or (default).
    With , Newman attempts to automatically turn color on or off based on the color support in the terminal. This behaviour can be modified by using the or value accordingly.


  • Specify whether or not to force the unicode disable option. When supplied, all symbols in the output will be replaced by their plain text equivalents.


  • Allows the specification of global variables via the command line, in a key=value format. Multiple CLI global variables can be added by using multiple times, like so: .


  • Allows the specification of environment variables via the command line, in a key=value format. Multiple CLI environment variables can be added by using multiple times, like so: .


  • Show detailed information of collection run and each request sent.

SSL

Client Certificates

Client certificates are an alternative to traditional authentication mechanisms. These allow their users to make authenticated requests to a server, using a public certificate, and an optional private key that verifies certificate ownership. In some cases, the private key may also be protected by a secret passphrase, providing an additional layer of authentication security.

Newman supports SSL client certificates, via the following CLI options:

Using a single SSL client certificate


  • The path to the public client certificate file.


  • The path to the private client key (optional).


  • The secret passphrase used to protect the private client key (optional).

Using SSL client certificates configuration file (supports multiple certificates per run)

This option allows setting different SSL client certificate according to URL or hostname. This option takes precedence over , and options. If there is no match for the URL in the list, these options are used as fallback.

Trusted CA

When it is not wanted to use the option, additionally trusted CA certificates can be provided like this:


  • The path to the file, that holds one or more trusted CA certificates in PEM format

Configuring Proxy

Newman can also be configured to work with proxy settings via the following environment variables:

  • /
  • /
  • /

For more details on using these variables, refer here.

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API Reference

newman.run(options: object , callback: function) => run: EventEmitter

The function executes a collection and returns the run result to a callback function provided as parameter. The return of the function is a run instance, which emits run events that can be listened to.

ParameterDescription
optionsThis is a required argument and it contains all information pertaining to running a collection.

Required
Type:
options.collectionThe collection is a required property of the argument. It accepts an object representation of a Postman Collection which should resemble the schema mentioned at https://schema.getpostman.com/. The value of this property could also be an instance of Collection Object from the Postman Collection SDK.

As , one can provide a URL where the Collection JSON can be found (e.g. Postman Cloud API service) or path to a local JSON file.

Required
Type: PostmanCollection
options.environmentOne can optionally pass an environment file path or URL as to this property and that will be used to read Postman Environment Variables from. This property also accepts environment variables as an . Environment files exported from Postman App can be directly used here.

Optional
Type:
options.envVarOne can optionally pass environment variables as an array of key-value string object pairs. It will be used to read Postman Environment Variables as well as overwrite environment variables from .

Optional
Type:
options.globalsPostman Global Variables can be optionally passed on to a collection run in form of path to a file or URL. It also accepts variables as an .

Optional
Type:
options.globalVarOne can optionally pass global environment variables as an array of key-value string object pairs. It will be used to read Postman Global Environment Variables as well as overwrite global environment variables from .

Optional
Type:
options.iterationCountSpecify the number of iterations to run on the collection. This is usually accompanied by providing a data file reference as .

Optional
Type: , Default value:
options.iterationDataPath to the JSON or CSV file or URL to be used as data source when running multiple iterations on a collection.

Optional
Type:
options.folderThe name or ID of the folder/folders (ItemGroup) in the collection which would be run instead of the entire collection.

Optional
Type:
options.workingDirThe path of the directory to be used as working directory.

Optional
Type: , Default value:
options.insecureFileReadAllow reading files outside of working directory.

Optional
Type: , Default value:
options.timeoutSpecify the time (in milliseconds) to wait for the entire collection run to complete execution.

Optional
Type: , Default value:
options.timeoutRequestSpecify the time (in milliseconds) to wait for requests to return a response.

Optional
Type: , Default value:
options.timeoutScriptSpecify the time (in milliseconds) to wait for scripts to return a response.

Optional
Type: , Default value:
options.delayRequestSpecify the time (in milliseconds) to wait for between subsequent requests.

Optional
Type: , Default value:
options.ignoreRedirectsThis specifies whether newman would automatically follow 3xx responses from servers.

Optional
Type: , Default value:
options.insecureDisables SSL verification checks and allows self-signed SSL certificates.

Optional
Type: , Default value:
options.bailA switch to specify whether or not to gracefully stop a collection run (after completing the current test script) on encountering the first error. Takes additional modifiers as arguments to specify whether to end the run with an error for invalid name or path.

Available modifiers: and .
eg.

Optional
Type: , Default value:
options.suppressExitCodeIf present, allows overriding the default exit code from the current collection run, useful for bypassing collection result failures. Takes no arguments.

Optional
Type: , Default value:
options.reportersSpecify one reporter name as or provide more than one reporter name as an .

Available reporters: , , , and .

Optional
Type:
options.reporterSpecify options for the reporter(s) declared in .
e.g.
e.g.

Optional
Type:
options.colorEnable or Disable colored CLI output.

Available options: , and

Optional
Type: , Default value:
options.sslClientCertThe path to the public client certificate file.

Optional
Type:
options.sslClientKeyThe path to the private client key file.

Optional
Type:
options.sslClientPassphraseThe secret client key passphrase.

Optional
Type:
options.sslClientCertListThe path to the client certificate configuration list file. This option takes precedence over , and . When there is no match in this configuration list, is used as fallback.

Optional
Type:
options.sslExtraCaCertsThe path to the file, that holds one or more trusted CA certificates in PEM format.

Optional
Type:
options.requestAgentsSpecify the custom requesting agents to be used when performing HTTP and HTTPS requests respectively. Example: Using Socks Proxy

Optional
Type:
options.cookieJarOne can optionally pass a CookieJar file path as to this property and that will be deserialized using . This property also accepts a CookieJar instance.

Optional
Type:
options.newmanVersionThe Newman version used for the collection run.

This will be set by Newman
callbackUpon completion of the run, this callback is executed with the , argument.

Required
Type:

newman.run~callback(error: object , summary: object)

The parameter of the function receives two arguments: (1) and (2)

ArgumentDescription
errorIn case newman faces an error during the run, the error is passed on to this argument of callback. By default, only fatal errors, such as the ones caused by any fault inside Newman is passed on to this argument. However, setting or as part of run options will cause newman to treat collection script syntax errors and test failures as fatal errors and be passed down here while stopping the run abruptly at that point.

Type:
summaryThe run summary will contain information pertaining to the run.

Type:
summary.errorAn error object which if exists, contains an error message describing the message

Type:
summary.collectionThis object contains information about the collection being run, it's requests, and their associated pre-request scripts and tests.

Type:
summary.environmentAn object with environment variables used for the current run, and the usage status for each of those variables.

Type:
summary.globalsThis object holds details about the globals used within the collection run namespace.

Type:
summary.runA cumulative run summary object that provides information on .

Type:
summary.run.statsAn object which provides details about the total, failed, and pending counts for pre request scripts, tests, assertions, requests, and more.

Type:
summary.run.failuresAn array of failure objects, with each element holding details, including the assertion that failed, and the request.

Type:
summary.run.executionsThis object contains information about each request, along with it's associated activities within the scope of the current collection run.

Type:

newman.run~events

Newman triggers a whole bunch of events during the run.

newman.run({collection: require('./sample-collection.json'),iterationData: [{"var": "data","var_beta": "other_val"}],globals: {"id": "5bfde907-2a1e-8c5a-2246-4aff74b74236","name": "test-env","values": [{"key": "alpha","value": "beta","type": "text","enabled": true}],"timestamp": 1404119927461,"_postman_variable_scope": "globals","_postman_exported_at": "2016-10-17T14:31:26.200Z","_postman_exported_using": "Postman/4.8.0"},globalVar: [{"key":"glboalSecret","value":"globalSecretValue"},{"key":"globalAnotherSecret","value":`${process.env.GLOBAL_ANOTHER_SECRET}`}],environment: {"id": "4454509f-00c3-fd32-d56c-ac1537f31415","name": "test-env","values": [{"key": "foo","value": "bar","type": "text","enabled": true}],"timestamp": 1404119927461,"_postman_variable_scope": "environment","_postman_exported_at": "2016-10-17T14:26:34.940Z","_postman_exported_using": "Postman/4.8.0"},envVar: [{"key":"secret","value":"secretValue"},{"key":"anotherSecret","value":`${process.env.ANOTHER_SECRET}`}],})
Sours: https://github.com/postmanlabs/newman
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