These are my Cypress and Postman/Newman samples. The application under test is the Cypress Real World App.
You should have NodeJS and Yarn installed in order to run the app and the tests.
From the root directory:
$ cd app
$ yarn install # install dependencies
$ yarn dev # run local server with seeded db
From the project root directory
$ cd ./tests/ui
$ npm install
# if you want to open the cypress test runner
# and run the tests from there
$ npm run test
# if you want to run the tests on command line
$ npm run test:run
From the project root directory
$ cd ./tests/api
$ npm install
$ npm run test