import { Event, EntityCluster, EntityCollection } from "@cesium/engine"; function MockDataSource() { //Values to be fiddled with by the test this.changedEvent = new Event(); this.errorEvent = new Event(); this.entities = new EntityCollection(); this.name = "Mock Data"; this.clock = undefined; this.isTimeVarying = false; this.isLoading = false; this.loadingEvent = new Event(); this.destroyed = false; this.clustering = new EntityCluster(); } MockDataSource.prototype.update = function () { return true; }; MockDataSource.prototype.destroy = function () { this.destroyed = true; }; export default MockDataSource;