TypeScript database-deprecated.FirebaseObjectObservable类代码示例

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本文整理汇总了TypeScript中@angular/fire/database-deprecated.FirebaseObjectObservable类的典型用法代码示例。如果您正苦于以下问题：TypeScript FirebaseObjectObservable类的具体用法？TypeScript FirebaseObjectObservable怎么用？TypeScript FirebaseObjectObservable使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了FirebaseObjectObservable类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的TypeScript代码示例。

示例1: describe

describe('FirebaseObjectObservable', () => {

  let O: FirebaseObjectObservable<any>;
  let ref: Reference;
  let app: FirebaseApp;
  let db: AngularFireDatabase;

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [
        AngularFireModule.initializeApp(COMMON_CONFIG),
        AngularFireDatabaseModule
      ]
    });
    inject([FirebaseApp, AngularFireDatabase], (_app: FirebaseApp, _db: AngularFireDatabase) => {
      app = _app;
      db = _db;
      ref = app.database().ref();
      O = new FirebaseObjectObservable((observer: Observer<any>) => {
      }, ref);
    })();
  });

  afterEach(done => {
    ref.off();
    ref.remove();
    app.delete().then(done, done.fail);
  });

  it('should return an instance of FirebaseObservable when calling operators', () => {
    let O = new FirebaseObjectObservable((observer: Observer<any>) => { });
    expect(map.call(O, noop) instanceof FirebaseObjectObservable).toBe(true);
  });

  describe('$ref', () => {
    it('should match the database path passed in the constructor', () => {
      expect(O.$ref!.toString()).toEqual(ref.toString());
    });
  });

  describe('set', () => {

    it('should call set on the underlying ref', (done: any) => {
      let setSpy = spyOn(ref, 'set');

      O.subscribe();
      O.set(1);
      expect(setSpy).toHaveBeenCalledWith(1);
      done();
    });

    it('should throw an exception if set when not subscribed', () => {
      O = new FirebaseObjectObservable((observer: Observer<any>) => { });

      expect(() => {
        O.set('foo');
      }).toThrowError('No ref specified for this Observable!')
    });

    it('should accept any type of value without compilation error', () => {
      O.set('foo');
    });


    it('should resolve returned thenable when successful', (done: any) => {
      O.set('foo').then(done, done.fail);
    });

  });

  describe('update', () => {
    const updateObject = { hot: 'firebae' };
    it('should call update on the underlying ref', () => {
      let updateSpy = spyOn(ref, 'update');

      O.subscribe();
      O.update(updateObject);
      expect(updateSpy).toHaveBeenCalledWith(updateObject);
    });

    it('should throw an exception if updated when not subscribed', () => {
      O = new FirebaseObjectObservable((observer: Observer<any>) => { });

      expect(() => {
        O.update(updateObject);
      }).toThrowError('No ref specified for this Observable!')
    });

    it('should accept any type of value without compilation error', () => {
      O.update(updateObject);
    });

    it('should resolve returned thenable when successful', (done: any) => {
      O.update(updateObject).then(done, done.fail);
    });

  });

  describe('remove', () => {

//.........这里部分代码省略.........

开发者ID:PaulD11，项目名称:angularfire2，代码行数:101，代码来源:firebase_object_observable.spec.ts

示例2: it

    it('should call remove on the underlying ref', () => {
      let removeSpy = spyOn(ref, 'remove');

      O.subscribe();
      O.remove();
      expect(removeSpy).toHaveBeenCalledWith();
    });

开发者ID:PaulD11，项目名称:angularfire2，代码行数:7，代码来源:firebase_object_observable.spec.ts

示例3: expect

 expect(() => {
   O.update(updateObject);
 }).toThrowError('No ref specified for this Observable!')

开发者ID:PaulD11，项目名称:angularfire2，代码行数:3，代码来源:firebase_object_observable.spec.ts

注：本文中的@angular/fire/database-deprecated.FirebaseObjectObservable类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。