async'ify avatar and apppassword code

src/test/blobs-test.js

@@ -0,0 +1,36 @@
+/* global it:false */
+/* global describe:false */
+/* global before:false */
+/* global after:false */
+
+'use strict';
+
+const blobs = require('../blobs.js'),
+    common = require('./common.js'),
+    expect = require('expect.js');
+
+describe('blobs', function () {
+    const { setup, cleanup } = common;
+
+    before(setup);
+    after(cleanup);
+
+    it('can set value', async function () {
+        await blobs.set('someid', Buffer.from('somevalue'));
+    });
+    it('can get the set value', async function () {
+        const value = await blobs.get('someid');
+        expect(value).to.eql(Buffer.from('somevalue'));
+    });
+    it('can update a value', async function () {
+        await blobs.set('someid', Buffer.from('someothervalue'));
+    });
+    it('can get updated value', async function () {
+        const value = await blobs.get('someid');
+        expect(value).to.eql(Buffer.from('someothervalue'));
+    });
+    it('cannot get randome value', async function () {
+        const value = await blobs.get('unknownid');
+        expect(value).to.be(null);
+    });
+});