node_modules/npm/test/tap/pwd-prefix.js

// This test ensures that a few commands do the same
// thing when the cwd is where package.json is, and when
// the package.json is one level up.

var test = require("tap").test
var common = require("../common-tap.js")
var path = require("path")
var root = path.resolve(__dirname, "../..")
var lib = path.resolve(root, "lib")
var commands = ["run", "version"]

commands.forEach(function (cmd) {
  // Should get the same stdout and stderr each time
  var stdout, stderr

  test(cmd + " in root", function (t) {
    common.npm([cmd], {cwd: root}, function (er, code, so, se) {
      if (er) throw er
      t.notOk(code, "npm " + cmd + " exited with code 0")
      stdout = so
      stderr = se
      t.end()
    })
  })

  test(cmd + " in lib", function (t) {
    common.npm([cmd], {cwd: lib}, function (er, code, so, se) {
      if (er) throw er
      t.notOk(code, "npm " + cmd + " exited with code 0")
      t.equal(so, stdout)
      t.equal(se, stderr)
      t.end()
    })
  })
})