var assert = require('assert');
  var env = require('node-env-file');
  process.env.FOO = "defaultfoo";
  // Load any undefined ENV variables from a specified file.
  env(__dirname + '/.env');
  assert.equal(process.env.FOO, "defaultfoo");
  assert.equal(process.env.BAR, "bar1");
  assert.equal(process.env.BAZ, "1");
  assert.equal(process.env.QUX, "");
  assert.equal(process.env.QUUX, undefined);
  // Load another ENV file - and overwrite any defined ENV variables.
  env(__dirname + '/.env2', {overwrite: true});
  assert.equal(process.env.FOO, "foo2");
  assert.equal(process.env.BAR, "bar2");
  assert.equal(process.env.BAZ, "2");
  assert.equal(process.env.QUX, "");
  assert.equal(process.env.QUUX, undefined);
  
  // Load any undefined ENV variables from a specified file, but don't crash if the file doesn't exist
  // Usefull for testing env vars in development, but using "real" env vars in production
  envfile(__dirname + '/.env', {raise: false});