var mkdirp = require('../');
  var path = require('path');
  var test = require('tap').test;
  var mockfs = require('mock-fs');
  var _0777 = parseInt('0777', 8);
  var _0755 = parseInt('0755', 8);
  
  test('opts.fs', function (t) {
      t.plan(5);
      
      var x = Math.floor(Math.random() * Math.pow(16,4)).toString(16);
      var y = Math.floor(Math.random() * Math.pow(16,4)).toString(16);
      var z = Math.floor(Math.random() * Math.pow(16,4)).toString(16);
      
      var file = '/beep/boop/' + [x,y,z].join('/');
      var xfs = mockfs.fs();
      
      mkdirp(file, { fs: xfs, mode: _0755 }, function (err) {
          t.ifError(err);
          xfs.exists(file, function (ex) {
              t.ok(ex, 'created file');
              xfs.stat(file, function (err, stat) {
                  t.ifError(err);
                  t.equal(stat.mode & _0777, _0755);
                  t.ok(stat.isDirectory(), 'target not a directory');
              });
          });
      });
  });