internal…

cruft-test.js
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			'use strict'
			var fs = require('graceful-fs')
			var path = require('path')
			var mkdirpSync = require('mkdirp').sync
			var rimraf = require('rimraf')
			var test = require('tap').test
			var common = require('../common-tap.js')

			var base = path.join(__dirname, path.basename(__filename, '.js'))
			var cruft = path.join(base, 'node_modules', 'cruuuft')
			var pkg = {
			name: 'example',
			version: '1.0.0',
			dependencies: {}
			}

			function setup () {
			mkdirpSync(path.dirname(cruft))
			fs.writeFileSync(cruft, 'this is some cruft for sure')
			fs.writeFileSync(path.join(base, 'package.json'), JSON.stringify(pkg))
			}

			function cleanup () {
			rimraf.sync(base)
			}

			test('setup', function (t) {
			cleanup()
			setup()
			t.done()
			})

			test('cruft', function (t) {
			common.npm(['ls'], {cwd: base}, function (er, code, stdout, stderr) {
			t.is(stderr, '', 'no warnings or errors from ls')
			t.done()
			})
			})

			test('cleanup', function (t) {
			cleanup()
			t.done()
			})