Test automatic refresh

test/spec/app.js

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+'use strict';
+
+describe('AppJS', function() {
+  describe('Automatic page refresh', function(){
+    var clock;
+    beforeEach(function () {
+      clock = sinon.useFakeTimers();
+      sinon.stub(window, "refresher", function(){return true});
+    });
+
+    afterEach(function () {
+      clock.restore();
+      window.refresher.restore();
+    });
+
+    it('should not call refresher if idle time is less than 6 hours', function() {
+      window.awaitIdle();
+      clock.tick(21599999);
+      expect(window.refresher).to.not.be.called;
+    });
+
+    it('should not call refresher if awaitIdle is called within 6 hours', function() {
+      window.awaitIdle();
+      clock.tick(21500000);
+      window.awaitIdle();
+      clock.tick(21500000);
+      expect(window.refresher).to.not.be.called;
+    });
+
+    it('should call refresher if idle time is 6 hours or greater', function() {
+      window.awaitIdle();
+      clock.tick(21600000);
+      expect(window.refresher).to.be.called;
+    });
+  });
+});