Postman Running collections against different environments

Question

I have a postman collection with 3 requests (A,B,C) and I have 3 different environments: "dev", "test", "uat". I would like to create a Run which will run all 3 requests from the collection against the 3 different envs. So the effective runs will be:

env:dev, request A
env:dev, request B
env:dev, request C

env:test, request A
env:test, request B
env:test, request C

env:uat, request A
env:uat, request B
env:uat, request C

Is there a simple way to achieve it in Postman?

Answer 1

Newman will address your question.

Run newman with environment

newman run your.postman_collection.json  -e dev.postman_environment.json
newman run your.postman_collection.json  -e test.postman_environment.json
newman run your.postman_collection.json  -e uat.postman_environment.json

Demo REST API

https://freetestapi.com/apis/animals

Get Animal by [animal name] query https://freetestapi.com/api/v1/animals?search=[animal name]

example

https://freetestapi.com/api/v1/animals?search=Lion

Set three environments (dev/test/uat)

dev environment

test environment

uat environment

Set three requests (dev/test/uat)

request A

https://freetestapi.com/api/v1/animals?search={{request_A}}

Tests tab

var jsonData = JSON.parse(responseBody);
console.log(jsonData[0].name);
pm.expect(jsonData[0].name).to.eql(pm.environment.get("request_A"));

Run on `dev' environment

request B

https://freetestapi.com/api/v1/animals?search={{request_B}}

Tests tab

var jsonData = JSON.parse(responseBody);
console.log(jsonData[0].name);
pm.expect(jsonData[0].name).to.eql(pm.environment.get("request_B"));

Run on `dev' environment

request C

https://freetestapi.com/api/v1/animals?search={{request_C}}

Tests tab

var jsonData = JSON.parse(responseBody);
console.log(jsonData[0].name);
pm.expect(jsonData[0].name).to.eql(pm.environment.get("request_C"));

Run on `dev' environment

Export collection and environments

Export collection Will be saved as 1-demo.postman_collection.json

Export environment Will be saved as dev.postman_environment.json

Other two environments

Will be saved as test.postman_environment.json

Will be saved as uat.postman_environment.json

Run newman with three environments by bash

Save as run.sh

newman run 1-demo.postman_collection.json  -e dev.postman_environment.json
newman run 1-demo.postman_collection.json  -e test.postman_environment.json
newman run 1-demo.postman_collection.json  -e uat.postman_environment.json

Run it in git bash

./run.sh

Result