js: make init export immutable

--

* src/index.js: The export now uses a freezed Object, which does not
  allow for simply overwriting the init method by e.g. a third-party
  library.
* BrowsertestExtension: Added some tests trying if decryption of bad
  data properly fails

1 files changed, 62 insertions, 0 deletions

diff --git a/lang/js/BrowserTestExtension/tests/decryptTest.js b/lang/js/BrowserTestExtension/tests/decryptTest.js
new file mode 100644
index 00000000..c6b3a3c5
--- /dev/null
+++ b/lang/js/BrowserTestExtension/tests/decryptTest.js
@@ -0,0 +1,62 @@
+/* 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+
+ *
+ * Author(s):
+ *     Maximilian Krambach <[email protected]>
+ */
+
+/* global describe, it, before, expect, Gpgmejs */
+/* global bigString, inputvalues, sabotageMsg*/
+
+describe('Decryption', function () {
+    let context = null;
+    const good_fpr = inputvalues.encrypt.good.fingerprint;
+
+    before(function(done){
+        const prm = Gpgmejs.init();
+        prm.then(function(gpgmejs){
+            context = gpgmejs;
+            done();
+        });
+    });
+
+    it('Decryption of random string fails', function (done) {
+        let data = bigString(20 * 1024);
+        context.decrypt(data).then(
+            function(){},
+            function(error){
+                expect(error).to.be.an('error');
+                expect(error.code).to.equal('GNUPG_ERROR');
+                done();
+            });
+    });
+
+    it('Decryption of slightly corrupted message fails', function (done) {
+        const data = bigString(10000);
+        context.encrypt(data, good_fpr).then(function(enc){
+            context.decrypt(sabotageMsg(enc.data)).then(
+                function(){},
+                function(error){
+                    expect(error).to.be.an('error');
+                    expect(error.code).to.equal('GNUPG_ERROR');
+                    done();
+                });
+        });
+    }).timeout(5000);
+});
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