message passing by helper functions

test/shared/messages.test.js

@@ -0,0 +1,25 @@
+import { expect } from "chai";
+import * as messages from '../../src/shared/messages';
+
+describe('messages', () => {
+  describe('#receive', () => {
+    it('received a message', (done) => {
+      messages.receive(window, (message) => {
+        expect(message).to.deep.equal({ type: 'vimvixen.test' });
+        done();
+      });
+      window.postMessage(JSON.stringify({ type: 'vimvixen.test' }), '*');
+    });
+  });
+
+  describe('#send', () => {
+    it('sends a message', (done) => {
+      window.addEventListener('message', (e) => {
+        let json = JSON.parse(e.data);
+        expect(json).to.deep.equal({ type: 'vimvixen.test' });
+        done();
+      });
+      messages.send(window, { type: 'vimvixen.test' });
+    });
+  });
+});