Implement user attribute packet write()

src/packet/user_attribute.js

@@ -65,6 +65,19 @@ UserAttribute.prototype.read = function(bytes) {
   }
 };
 
+/**
+ * Creates a string representation of the user attribute packet
+ * @return {String} string representation
+ */
+UserAttribute.prototype.write = function() {
+  var result = '';
+  for (var i = 0; i < this.attributes.length; i++) {
+    result += packet.writeSimpleLength(this.attributes[i].length);
+    result += this.attributes[i];
+  }
+  return result;
+};
+
 /**
  * Compare for equality
  * @param  {module:user_attribute~UserAttribute} usrAttr

test/general/key.js

@@ -261,6 +261,49 @@ describe('Key', function() {
     '=lw5e',
     '-----END PGP PRIVATE KEY BLOCK-----'].join('\n');
 
+  var user_attr_key =
+    ['-----BEGIN PGP PUBLIC KEY BLOCK-----',
+    'Version: GnuPG v2.0.22 (GNU/Linux)',
+    '',
+    'mI0EUmEvTgEEANyWtQQMOybQ9JltDqmaX0WnNPJeLILIM36sw6zL0nfTQ5zXSS3+',
+    'fIF6P29lJFxpblWk02PSID5zX/DYU9/zjM2xPO8Oa4xo0cVTOTLj++Ri5mtr//f5',
+    'GLsIXxFrBJhD/ghFsL3Op0GXOeLJ9A5bsOn8th7x6JucNKuaRB6bQbSPABEBAAG0',
+    'JFRlc3QgTWNUZXN0aW5ndG9uIDx0ZXN0QGV4YW1wbGUuY29tPoi5BBMBAgAjBQJS',
+    'YS9OAhsvBwsJCAcDAgEGFQgCCQoLBBYCAwECHgECF4AACgkQSmNhOk1uQJQwDAP6',
+    'AgrTyqkRlJVqz2pb46TfbDM2TDF7o9CBnBzIGoxBhlRwpqALz7z2kxBDmwpQa+ki',
+    'Bq3jZN/UosY9y8bhwMAlnrDY9jP1gdCo+H0sD48CdXybblNwaYpwqC8VSpDdTndf',
+    '9j2wE/weihGp/DAdy/2kyBCaiOY1sjhUfJ1GogF49rDRwc7BzAEQAAEBAAAAAAAA',
+    'AAAAAAAA/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQN',
+    'DAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/',
+    '2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIy',
+    'MjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCAAFABQDASIAAhEBAxEB/8QAHwAAAQUB',
+    'AQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQID',
+    'AAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0',
+    'NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKT',
+    'lJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl',
+    '5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL',
+    '/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHB',
+    'CSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpj',
+    'ZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3',
+    'uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIR',
+    'AxEAPwD3+iiigAooooA//9mIuQQTAQIAIwUCUzxDqQIbLwcLCQgHAwIBBhUIAgkK',
+    'CwQWAgMBAh4BAheAAAoJEEpjYTpNbkCU9PEEAKMMaXjhGdgDISBXAAEVXL6MB3x1',
+    'd/7zBdnUljh1gM34TSKvbeZf7h/1DNgLbJFfSF3KiLViiqRVOumIkjwNIMZPqYtu',
+    'WoEcElY50mvTETzOKemCt1GYI0GhOY2uZOVRtQLrkX0CB9r5hEQalkrnjNKlbghj',
+    'LfOYu1uARF16cZUWuI0EUmEvTgEEAOkfz7QRWiWk+I6tdMqgEpOLKsFTLHOh3Inz',
+    'OZUnccxMRT++J2lDDMhLChz+d0MUxdBq6rrGoEIP2bYE9AjdR1DNedsuwAjnadYI',
+    'io6TMzk0ApagqHJcr1jhQfi/0sBhCCX+y0ghK8KAbiYnyXPMQFa9F19CbYaFvrj/',
+    'dXk0N16bABEBAAGJAT0EGAECAAkFAlJhL04CGy4AqAkQSmNhOk1uQJSdIAQZAQIA',
+    'BgUCUmEvTgAKCRDghPdEbCAsl7qiBADZpokQgEhe2Cuz7xZIniTcM3itFdxdpRl/',
+    'rrumN0P2cXbcHOMUfpnvwkgZrFEcl0ztvTloTxi7Mzx/c0iVPQXQ4ur9Mjaa5hT1',
+    '/9TYNAG5/7ApMHrb48QtWCL0yxcLVC/+7+jUtm2abFMUU4PfnEqzFlkjY4mPalCm',
+    'o5tbbszw2VwFBADDZgDd8Vzfyo8r49jitnJNF1u+PLJf7XN6oijzCftAJDBez44Z',
+    'ofZ8ahPfkAhJe6opxaqgS47s4FIQVOEJcF9RgwLTU6uooSzA+b9XfNmQu7TWrXZQ',
+    'zBlpyHbxDAr9hmXLiKg0Pa11rOPXu7atTZ3C2Ic97WIyoaBUyhCKt8tz6Q==',
+    '=MVfN',
+    '-----END PGP PUBLIC KEY BLOCK-----'].join('\n');
+
+
   it('Parsing armored text with two keys', function(done) {
     var pubKeys = openpgp.key.readArmored(twoKeys);
     expect(pubKeys).to.exist;
@@ -497,5 +540,11 @@ describe('Key', function() {
     testPref(openpgp.key.readArmored(key.publicKeyArmored).keys[0]);
   });
 
+  it('User attribute packet read & write', function() {
+    var key = openpgp.key.readArmored(user_attr_key).keys[0];
+    var key2 = openpgp.key.readArmored(key.armor()).keys[0];
+    expect(key.users[1].userAttribute).eql(key2.users[1].userAttribute);
+  });
+
 });