angular-cn/packages/zone.js/lib/zone-spec/sync-test.ts

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

class SyncTestZoneSpec implements ZoneSpec {
  runZone = Zone.current;

  constructor(namePrefix: string) {
    this.name = 'syncTestZone for ' + namePrefix;
  }

  // ZoneSpec implementation below.

  name: string;

  onScheduleTask(delegate: ZoneDelegate, current: Zone, target: Zone, task: Task): Task {
    switch (task.type) {
      case 'microTask':
      case 'macroTask':
        throw new Error(`Cannot call ${task.source} from within a sync test.`);
      case 'eventTask':
        task = delegate.scheduleTask(target, task);
        break;
    }
    return task;
  }
}

// Export the class so that new instances can be created with proper
// constructor params.
(Zone as any)['SyncTestZoneSpec'] = SyncTestZoneSpec;