js: fixing errors found by testing: encrypt/decrypt

--

* Key.js: Error code for wrong parameter in createKey should be
  "PARAM_WRONG"
* Helpers.js: The property openpgpjs-like Objects were checked for in
  toKeyIdArray was not defined.
* src/permittedOperations.js: updated more expectations and assumptions
  for the native API

* new Problems:
  - There seems to be a message size limit of about 21 MB for
    nativeMessaging, much lower than the documented 4GB.
  - Some bytes are lost with random data in an encrypt-decrypt
    roundtrip. The culprit is unclear.

1 files changed, 9 insertions, 4 deletions

diff --git a/lang/js/src/Connection.js b/lang/js/src/Connection.js
index a198bdc6..2c8792d6 100644
--- a/lang/js/src/Connection.js
+++ b/lang/js/src/Connection.js
@@ -99,11 +99,12 @@ export class Connection{
                     me._connection.onMessage.removeListener(listener)
                     reject(gpgme_error('CONN_EMPTY_GPG_ANSWER'));
                 } else if (msg.type === "error"){
-                    me._connection.onMessage.removeListener(listener)
+                    me._connection.onMessage.removeListener(listener);
                     reject(gpgme_error('GNUPG_ERROR', msg.msg));
                 } else {
                     let answer_result = answer.add(msg);
                     if (answer_result !== true){
+                        me._connection.onMessage.removeListener(listener);
                         reject(answer_result);
                     }
                     if (msg.more === true){
@@ -127,8 +128,12 @@ export class Connection{
                         }, 5000);
                     }]).then(function(result){
                     return result;
-                }, function(error){
-                    return error;
+                }, function(reject){
+                    if(!reject instanceof Error) {
+                        return gpgme_error('GNUPG_ERROR', reject);
+                    } else {
+                        return reject;
+                    }
                 });
             }
         });
@@ -196,7 +201,7 @@ class Answer{
                         this._response.push(msg[key]);
                     }
                     else {
-                        return gpgme_error('CONN_UNEXPECTED_ANSWER', key);
+                        return gpgme_error('CONN_UNEXPECTED_ANSWER');
                     }
                     break;
             }