self.assertEquals(round(strfdiff(self.ec.get_resource(app2).start_time, self.ec.get_resource(app1).start_time),1), 3.0)
self.assertEquals(round(strfdiff(self.ec.get_resource(app3).start_time, self.ec.get_resource(app2).start_time),1), 2.0)
self.assertEquals(round(strfdiff(self.ec.get_resource(app4).start_time, self.ec.get_resource(app3).start_time),1), 3.0)
self.assertEquals(round(strfdiff(self.ec.get_resource(app2).start_time, self.ec.get_resource(app1).start_time),1), 3.0)
self.assertEquals(round(strfdiff(self.ec.get_resource(app3).start_time, self.ec.get_resource(app2).start_time),1), 2.0)
self.assertEquals(round(strfdiff(self.ec.get_resource(app4).start_time, self.ec.get_resource(app3).start_time),1), 3.0)