old_contents: /** 
   * Test Group Key Exchanges
   */
  var should = require('should');
  var Sodium = require('../lib/sodium');
  if (process.env.COVERAGE) {
  	Sodium = require('../lib-cov/sodium');
  }
  
  describe('DH Group Key Exchange', function () {
  	it('should work for a groupd', function (done) {
  
  		var a = new Sodium.Key.ECDH("", Sodium.Hash.sha256(new Buffer(
  			"9549937362")));
  		var b = new Sodium.Key.ECDH("", Sodium.Hash.sha256(new Buffer(
  			"9542584444")));
  
  		var abDH = new Sodium.ECDH(b.pk(), a.sk()).secret();
  		var baDH = new Sodium.ECDH(a.pk(), b.sk()).secret();
  
  		abDH.should.eql(baDH);
  
  
  		done();
  	});
  });
new_contents: /** 
   * Test Group Key Exchanges
   */
  var should = require('should');
  var Sodium = require('../lib/sodium');
  if (process.env.COVERAGE) {
  	Sodium = require('../lib-cov/sodium');
  }
  
  describe('DH Group Key Exchange', function () {
  	it('should work for a groupd', function (done) {
  
  		var a = new Sodium.Key.ECDH("", Sodium.Hash.sha256(new Buffer(
  			"9549937362")));
  		var b = new Sodium.Key.ECDH("", Sodium.Hash.sha256(new Buffer(
  			"9542584444")));
  
  		var abDH = new Sodium.ECDH(b.pk(), a.sk()).secret();
  		var baDH = new Sodium.ECDH(a.pk(), b.sk()).secret();
  
  		abDH.should.eql(baDH);
  
  		done();
  	});
  });
subject: clean up