Initial add from apps

packages/ui-keyring/src/options/index.spec.js

@@ -0,0 +1,18 @@
+// Copyright 2017-2018 @polkadot/ui-keyring authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import keyringOptionInstance from './index';
+
+describe('KeyringOption', () => {
+  it('should not allow initOptions to be called more than once', () => {
+    const state = {};
+    // first call
+    keyringOptionInstance.init(state);
+
+    // second call
+    expect(() => {
+      keyringOptionInstance.init(state);
+    }).toThrowError('Unable to initialise options more than once');
+  });
+});