Unit test for plugin functionality

webpack.config.js

jest.mock('../local-eslint-config-finder', () => jest.fn())
jest.mock('../eslint-config', () => jest.fn())
jest.mock('../api-runner-node', () => jest.fn())
jest.mock('../../redux', () => ({
  store: {
    dispatch: jest.fn(),
    getState: jest.fn().mockImplementation(() => ({
      program: {
        extensions: []
      }
    }))
  }
}))
const { DefinePlugin } = require(`webpack`)
const webpackConfig = require(`../webpack.config`)
const { store } = require(`../../redux`)

const setup = async ({
  suppliedStage
} = {}) => {
  const program = {}
  const directory = process.cwd()

  await webpackConfig(program, directory, suppliedStage || 'develop')

  return store.dispatch.mock.calls[0][0].payload
}
test(`it does not include entire process.env object`, async () => {
  const config = await setup()

  const definePlugin = config.plugins.find(plugin => plugin instanceof DefinePlugin)

  expect(definePlugin.definitions).toEqual(expect.objectContaining({
    'process.env': '{}'
  }))
})