node/test/simple/test-repl-domain.js

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var util   = require('util');
var repl   = require('repl');

// A stream to push an array into a REPL
function ArrayStream() {
  this.run = function(data) {
    var self = this;
    data.forEach(function(line) {
      self.emit('data', line + '\n');
    });
  }
}
util.inherits(ArrayStream, require('stream').Stream);
ArrayStream.prototype.readable = true;
ArrayStream.prototype.writable = true;
ArrayStream.prototype.resume = function() {};
ArrayStream.prototype.write = function() {};

var putIn = new ArrayStream();
var testMe = repl.start('', putIn);

putIn.write = function(data) {
  // Don't use assert for this because the domain might catch it, and
  // give a false negative.  Don't throw, just print and exit.
  if (data === 'OK\n') {
      console.log('ok');
  }
  else {
      console.error(data);
      process.exit(1);
  }
};

putIn.run([
  'require("domain").create().on("error", function () { console.log("OK") })'
  + '.run(function () { throw new Error("threw") })'
]);