message: Add testing flag to the time-since component
diff: import Component from '@ember/component';
  import { assert } from '@ember/debug';
  +import Ember from 'ember';
  import { task, timeout } from 'ember-concurrency';
  import { layout } from 'ember-osf-web/decorators/component';
  @@ -13,7 +14,9 @@ const interval = 30000; // every 30 seconds
  export default class TimeSince extends Component.extend({
  calculateRelativeTime: task(function *(this: TimeSince) {
  assert('RelativeTime @date is required', Boolean(this.date));
  -
  + if (Ember.testing) {
  + return;
  + }
  while (true) {
  this.set('displayTime', formattedTimeSince(this.date));
  yield timeout(interval);
  