Allow operation in test mode

js/src/api/util/identity.js

@@ -1,7 +1,28 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity 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 General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
 import blockies from 'blockies';
 
+// jsdom doesn't have all the browser features, blockies fail
+const TEST_ENV = process.env.NODE_ENV === 'test';
+
 export function createIdentityImg (address, scale = 8) {
-  return blockies({
+  return TEST_ENV
+    ? ''
+    : blockies({
       seed: (address || '').toLowerCase(),
       size: 8,
       scale