text: var fs = require('fs');
  var path = require('path');
  var os = require('os');
  var tmpFile = path.join.bind(path, os.tmpdir());
  
  describe('fs.readFile()', function(){
    describe('when the file exists', function(){
      it('should succeed', function(done){
        fs.writeFile(tmpFile('mocha'), 'wahoo', done)
      })
    })
  
    describe('when the file does not exist', function(){
      it('should fail', function(done){
        // uncomment
        // fs.readFile(tmpFile('does-not-exist'), done);
        done();
      })
    })
  })
  