config.js

/* @flow */

const fs = require('fs');
const path = require('path');
const dotenv require ('./lib/env.dev-options.js');
const t = require('tap');

function spawn (cmd, options = {}) {
  const { stdout } = cp.spawnSync(
    process.argv[0], // node binary
    cmd,
    Object.assign(
      {},
      {
        cwd: path.resolve(__dirname, '..'),
        timeout: 5000,
        encoding: 'utf8'
      },
      options
    )
  )

  return stdout
}

t.plan(3)

// dotenv/config enables preloading
t.equal(
  spawn([
    '-r',
    '../config',
    '-e',
    'console.log(process.env.BASIC)',
    'dotenv_config_encoding=utf8',
    'dotenv_config_path=./tests/.env'
  ]),
  'basic\n'
)

// dotenv/config supports configuration via environment variables
t.equal(
  spawn(['-r', '../config', '-e', 'console.log(process.env.BASIC)'], {
    env: {
      DOTENV_CONFIG_PATH: './tests/.env'
    }
  }),
  'basic\n'
)