@webpack-blocks/webpack/lib/__tests__/setEnv.test.js

Webpack block for the webpack 2.x base configuration.

const test = require('ava')
const { createConfig } = require('@webpack-blocks/core')
const setEnv = require('../setEnv')

const webpack = {
  EnvironmentPlugin: function EnvironmentPluginMock(definitions) {
    this.definitions = definitions
  }
}

test('setEnv() creates a single EnvironmentPlugin instance only', t => {
  const config = createConfig({ webpack }, [setEnv(['a']), setEnv({ b: 'foo' })])

  t.is(Object.keys(config.plugins).length, 1)
  t.deepEqual(config.plugins[0].definitions, { a: undefined, b: 'foo' })
})