js: First testing and improvements

--

* Introduced Mocha/chai as testsuite. After development build
  'npm test' should run the unit tests. Functionality exclusive to
  Browsers/WebExtensions cannot be run this way, so some other testing
  is still needed.

  - package.json: Added required development packages
  - .babelrc indirect configuration for mocha. ES6 transpiling
    needs some babel configuration, but mocha has no setting for it.
  - test/mocha.opts Vonfiguration for mocha runs

* Fixed errors:
  - Helpers.js toKeyIdArray; isLongId is now exported
  - Key.js Key constructor failed
  - Message.js will not throw an Error during construction, a new
    message is now created with createMessage, which can return an
    Error or a GPGME_Message object

* Tests:
  - test/Helpers: exports from Helpers.js, GPGME_Error handling
  - test/Message: first init test with bad parameters

1 files changed, 110 insertions, 0 deletions

diff --git a/lang/js/test/Helpers.js b/lang/js/test/Helpers.js
new file mode 100644
index 00000000..590f9f65
--- /dev/null
+++ b/lang/js/test/Helpers.js
@@ -0,0 +1,110 @@
+/* gpgme.js - Javascript integration for gpgme
+ * Copyright (C) 2018 Bundesamt für Sicherheit in der Informationstechnik
+ *
+ * This file is part of GPGME.
+ *
+ * GPGME is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * GPGME is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+import { expect } from "../node_modules/chai/chai";
+import { gpgme_error} from "../src/Errors";
+import { GPGME_Key } from "../src/Key";
+import { isLongId, isFingerprint, toKeyIdArray } from "../src/Helpers"
+
+const helper_params = {
+    validLongId: '0A0A0A0A0A0A0A0A',
+    validGPGME_Key: new GPGME_Key('ADDBC303B6D31026F5EB4591A27EABDF283121BB'),
+    validKeys: [new GPGME_Key('A1E3BC45BDC8E87B74F4392D53B151A1368E50F3'),
+        'ADDBC303B6D31026F5EB4591A27EABDF283121BB',
+        new GPGME_Key('EE17AEE730F88F1DE7713C54BBE0A4FF7851650A')],
+    validFingerprint: '9A9A7A7A8A9A9A7A7A8A9A9A7A7A8A9A9A7A7A8A',
+    invalidLongId: '9A9A7A7A8A9A9A7A7A8A',
+    invalidFingerprint: [{hello:'World'}],
+    invalidKeyArray: {curiosity:'uncat'},
+    invalidKeyArray_OneBad: [
+        new GPGME_Key('12AE9F3E41B33BF77DF52B6BE8EE1992D7909B08'),
+        'E1D18E6E994FA9FE9360Bx0E687B940FEFEB095A',
+        '3AEA7FE4F5F416ED18CEC63DD519450D9C0FAEE5'],
+    invalidErrorCode: 'Please type in all your passwords.'
+}
+
+describe('Error Object handling', function(){
+    it('check the Timeout error', function(){
+        let test0 = gpgme_error('CONN_TIMEOUT');
+        expect(test0).to.be.an.instanceof(Error);
+        expect(test0.code).to.equal('CONN_TIMEOUT');
+    });
+    it('Error Object returns generic code if code is not listed', function(){
+        let test0 = gpgme_error(helper_params.invalidErrorCode);
+        expect(test0).to.be.an.instanceof(Error);
+        expect(test0.code).to.equal('GENERIC_ERROR');
+    });
+
+    it('Warnings like PARAM_IGNORED should not return errors', function(){
+        let test0 = gpgme_error('PARAM_IGNORED');
+        expect(test0).to.be.null;
+    });
+});
+
+describe('Fingerprint checking', function(){
+    it('isFingerprint(): valid Fingerprint', function(){
+        let test0  = isFingerprint(helper_params.validFingerprint);
+        expect(test0).to.be.true;
+    });
+    it('isFingerprint(): invalid Fingerprint', function(){
+        let test0 = isFingerprint(helper_params.invalidFingerprint);
+        expect(test0).to.be.false;
+    });
+});
+describe('Converting to Fingerprint', function(){
+    it('Correct Inputs', function(){
+        it('Fingerprint string', function(){
+            let test0 = toKeyIdArray(helper_params.validFingerprint);
+            expect(test0).to.be.an('array');
+            expect(test0).to.include(helper_params.validFingerprint);
+        });
+        it('GPGME_Key', function(){
+            expect(helper_params.validGPGME_Key).to.be.an.instanceof(GPGME_Key);
+            let test0 = toKeyIdArray(helper_params.validGPGME_Key);
+            expect(test0).to.be.an('array');
+            expect(test0).to.include(helper_params.validGPGME_Key.fingerprint);
+        });
+        it('Array of valid inputs', function(){
+            let test0 = toKeyIdArray(helper_params.validKeys);
+            expect(test0).to.be.an('array');
+            expect(test0).to.have.lengthOf(helper_params.validKeys.length);
+        });
+    });
+    describe('Incorrect inputs', function(){
+        it('valid Long ID', function(){
+            let test0 = toKeyIdArray(helper_params.validLongId);
+            expect(test0).to.be.empty;
+        });
+        it('invalidFingerprint', function(){
+            let test0 = toKeyIdArray(helper_params.invalidFingerprint);
+            expect(test0).to.be.empty;
+        });
+        it('invalidKeyArray', function(){
+            let test0 = toKeyIdArray(helper_params.invalidKeyArray);
+            expect(test0).to.be.empty;
+        });
+        it('Partially invalid array', function(){
+            let test0 = toKeyIdArray(helper_params.invalidKeyArray_OneBad);
+            expect(test0).to.be.an('array');
+            expect(test0).to.have.lengthOf(
+                helper_params.invalidKeyArray_OneBad.length - 1);
+        });
+    });
+});