some frontend unit tests

test/frontend/tests/keychain-tests.js

@@ -0,0 +1,41 @@
+import assert from 'assert';
+import Keychain from '../../../app/keychain';
+
+describe('Keychain', function() {
+  describe('setPassword', function() {
+    it('changes the authKey', async function() {
+      const k = new Keychain();
+      const original = await k.authKeyB64();
+      k.setPassword('foo', 'some://url');
+      const pwd = await k.authKeyB64();
+      assert.notEqual(pwd, original);
+    });
+  });
+
+  describe('encrypt / decrypt file', function() {
+    it('can decrypt text it encrypts', async function() {
+      const enc = new TextEncoder();
+      const dec = new TextDecoder();
+      const text = 'hello world!';
+      const k = new Keychain();
+      const ciphertext = await k.encryptFile(enc.encode(text));
+      assert.notEqual(dec.decode(ciphertext), text);
+      const plaintext = await k.decryptFile(ciphertext);
+      assert.equal(dec.decode(plaintext), text);
+    });
+  });
+
+  describe('encrypt / decrypt metadata', function() {
+    it('can decrypt metadata it encrypts', async function() {
+      const k = new Keychain();
+      const meta = {
+        name: 'foo',
+        type: 'bar/baz'
+      };
+      const ciphertext = await k.encryptMetadata(meta);
+      const result = await k.decryptMetadata(ciphertext);
+      assert.equal(result.name, meta.name);
+      assert.equal(result.type, meta.type);
+    });
+  });
+});