node_modules/osenv/test/unix.js

// only run this test on windows
// pretending to be another platform is too hacky, since it breaks
// how the underlying system looks up module paths and runs
// child processes, and all that stuff is cached.
if (process.platform === 'win32') {
  console.log('TAP Version 13\n' +
              '1..0\n' +
              '# Skip unix tests, this is not unix\n')
  return
}
var tap = require('tap')

// like unix, but funny
process.env.USER = 'sirUser'
process.env.HOME = '/home/sirUser'
process.env.HOSTNAME = 'my-machine'
process.env.TMPDIR = '/tmpdir'
process.env.TMP = '/tmp'
process.env.TEMP = '/temp'
process.env.PATH = '/opt/local/bin:/usr/local/bin:/usr/bin/:bin'
process.env.PS1 = '(o_o) $ '
process.env.EDITOR = 'edit'
process.env.VISUAL = 'visualedit'
process.env.SHELL = 'zsh'

tap.test('basic unix sanity test', function (t) {
  var osenv = require('../osenv.js')

  t.equal(osenv.user(), process.env.USER)
  t.equal(osenv.home(), process.env.HOME)
  t.equal(osenv.hostname(), process.env.HOSTNAME)
  t.same(osenv.path(), process.env.PATH.split(':'))
  t.equal(osenv.prompt(), process.env.PS1)
  t.equal(osenv.tmpdir(), process.env.TMPDIR)

  // mildly evil, but it's for a test.
  process.env.TMPDIR = ''
  delete require.cache[require.resolve('../osenv.js')]
  var osenv = require('../osenv.js')
  t.equal(osenv.tmpdir(), process.env.TMP)

  process.env.TMP = ''
  delete require.cache[require.resolve('../osenv.js')]
  var osenv = require('../osenv.js')
  t.equal(osenv.tmpdir(), process.env.TEMP)

  process.env.TEMP = ''
  delete require.cache[require.resolve('../osenv.js')]
  var osenv = require('../osenv.js')
  osenv.home = function () { return null }
  t.equal(osenv.tmpdir(), '/tmp')

  t.equal(osenv.editor(), 'edit')
  process.env.EDITOR = ''
  delete require.cache[require.resolve('../osenv.js')]
  var osenv = require('../osenv.js')
  t.equal(osenv.editor(), 'visualedit')

  process.env.VISUAL = ''
  delete require.cache[require.resolve('../osenv.js')]
  var osenv = require('../osenv.js')
  t.equal(osenv.editor(), 'vi')

  t.equal(osenv.shell(), 'zsh')
  process.env.SHELL = ''
  delete require.cache[require.resolve('../osenv.js')]
  var osenv = require('../osenv.js')
  t.equal(osenv.shell(), 'bash')

  t.end()
})