var md5 = require('./md5.js');
  var assert = require('assert');
  
  describe('md5', function () {
  
    it('should throw an error for `undefined`', function() {
      assert.throws(function() {
        md5(undefined);
      });
    });
  
    it('should throw an error for `null`', function() {
      assert.throws(function() {
        md5(null);
      });
    });
  
    it('should return the expected MD5 hash for "message"', function() {
      assert.equal('78e731027d8fd50ed642340b7c9a63b3', md5('message'));
    });
  
    it('should not return the same hash for random numbers twice', function() {
      var msg1 = Math.floor((Math.random() * 100000) + 1) + (new Date).getTime();
      var msg2 = Math.floor((Math.random() * 100000) + 1) + (new Date).getTime();
  
      if (msg1 !== msg2) {
        assert.notEqual(md5(msg1), md5(msg2));
      } else {
        assert.equal(md5(msg1), md5(msg1));
      }
    });
  
    it('should support Node.js Buffers', function() {
      var buffer = new Buffer('message áßäöü', 'utf8');
  
      assert.equal(md5(buffer), md5('message áßäöü'));
    })
  
    it('should be able to use a binary encoded string', function() {
      var hash1 = md5('abc', { asString: true });
      var hash2 = md5(hash1 + 'a', { asString: true, encoding : 'binary' });
      var hash3 = md5(hash1 + 'a', { encoding : 'binary' });
      assert.equal(hash3, '131f0ac52813044f5110e4aec638c169');
    });
  });