How can I run a single endpoint multiple times? - postman

Question

I have a Collection that has three endpoints. The first one creates an asset, the second one adds a file to the asset, and the third one lists all the assets.
How can I run the second one, the one that adds a file to the asset, more than once per each iteration of the Runner?
I'd like the test to create an asset and add multiple files to it for each iteration.
Any suggestions? I know I can duplicate the endpoint, but I was wondering if there was a programmatic way to do it.

Answer 1

Create 2 environment variables:
"Counter" (Number of times you want the request to run)
"RequestNumber" = 1 (To track the current request number)
Add this code to the test section of the request you want to run multiple times:
const counter = pm.environment.get("Counter");
const requestNumber = pm.environment.get("RequestNumber") || 1;
if (requestNumber < counter) {
postman.setNextRequest("RequestName");
requestNumber ++;
pm.environment.set("RequestNumber", requestNumber);
}
else {
pm.environment.set("RequestNumber", 1);
}

Answer 2

Instead of using postman.setNextRequest(), a bit cleaner way to hit the same endpoint is to use pm.sendRequest().
In Test or Pre-request Script, you can create a request object that would describe the request you want to send (URL, HTTP method, headers body, etc.) and put it in pm.sendRequest() function.
Consider:
const requestObject = {
url: 'https://postman-echo.com/post',
method: 'POST',
header: 'headername1:value1',
body: {
mode: 'raw',
raw: JSON.stringify({ key: "this is json" })
}
}
pm.sendRequest(requestObject, (err, res) => {
console.log(res);
});
To run the same request multiple times just put the function in for/for..in/for..of/forEach loop.
Consider:
for(let iteration = 0; iteration < 5; iteration++) {
pm.sendRequest(requestObject, (err, res) => {
console.log(res);
});
}
If you want you can modify the requestObject inside your loop.
Check out the Postman Documentation for more details.

Answer 3

So far, there is no straight forward solution using Postman, to configure several hits for the same request within a folder/collection.
Nevertheless, you can write some code in Pre-request script section, by adding a counter with number of hits you want and call postman.setNextRequest("request_name") method (read more about it from here) with you current request.
Out of Postman app scope, you can export your collection (as JSON file) and write some javascript code using newman which is a Command-line companion utility for Postman (more about newman from here) which gets a run method with a lot of iteration count and data options that would help you (for example, putting your second request in folder and iterates through it).
Hope that helps!