Method whenStable

packages/core/testing/src/component_fixture.ts:234–246

* Get a promise that resolves when the fixture is stable. * * This can be used to resume testing after events have triggered asynchronous activity or * asynchronous change detection.

()

   * asynchronous change detection.
   */
  whenStable(): Promise<any> {
    if (this.isStable()) {
      return Promise.resolve(false);
    }

    return new Promise((resolve, reject) => {
      this.appErrorHandler.whenStableRejectFunctions.add(reject);
      this._appRef.whenStable().then(() => {
        this.appErrorHandler.whenStableRejectFunctions.delete(reject);
        resolve(true);
      });
    });
  }

  /**
   * Retrieves all defer block fixtures in the component fixture.