Dependency injection example.js

const test = require('tape')

const application = (nameApi) => {
  const name = nameApi.getRandomName()
  return name.toUpperCase()
}

test('Application that uppercases names', (assert) => {
  const apiStub = {
    getRandomName() {
      return 'Rooney'
    }
  }
  const expected = 'ROONEY'
  const actual = application(apiStub)

  assert.equals(actual, expected)
  assert.end()
})