本文整理汇总了TypeScript中angularfire2/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: firebase.database.Reference;
let app: firebase.app.App;
let db: AngularFireDatabase;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [
AngularFireModule.initializeApp(COMMON_CONFIG),
AngularFireDatabaseModule
]
});
inject([FirebaseApp, AngularFireDatabase], (_app: firebase.app.App, _db: AngularFireDatabase) => {
app = _app;
db = _db;
ref = firebase.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.........
示例2: it
it('should call remove on the underlying ref', () => {
let removeSpy = spyOn(ref, 'remove');
O.subscribe();
O.remove();
expect(removeSpy).toHaveBeenCalledWith();
});示例3: expect
expect(() => {
O.update(updateObject);
}).toThrowError('No ref specified for this Observable!')