Postman Tutorial - Generate Random Data With Dynamic Variables In Postman смотреть онлайн

Learn how to generate random data by using Dynamic Variables in Postman.

While working API Requests, we will face many situations where we need to generate random data in order to make our requests dynamic in nature.

In the current scenario we are using Github API to create a new repository which requires a repository name in the body of the request. This repo name needs to be unique every time this request is sent or else it will fail as repositories with same name cannot exist.

To resolve the above issue we need to create a unique repository name with the help of dynamic variables in Postman. There are more than 100 dynamic variables which are available in Postman. For our example we can use a static text plus a RandomInt variable to generate a unique repo name and assign it to an environment variable as shown below:

var repositoryName = "Sample-API-" + pm.variables.replaceIn('{{$randomInt}}');
pm.environment.set("repoName",repositoryName);

The above script should be written in the Pre-Request script so that the repoName is pre generated every time before the request is sent.

We will also replace the name in request body with the environment variable like shown below.
{
"name": "{{repoName}}",
"description": "This is your first repository",
"homepage": "https://github.com",
"private": false,
"has_issues": true,
"has_projects": true,
"has_wiki": true
}

Now every time we sent the POST Request to create a Repository in GitHub, it will generate a unique repository name and the request will run multiple times without any problems.

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