Question

我正在尝试实施简单的单元测试。我正在尝试从此示例实现代码： https://github.com/ngrx/platform/blob/master/docs/effects/testing.md 但不幸的是，由于authActions，我无法编译代码。这行：

authActions = hot('--a-', { a: action });

给我编译错误，例如：

类型'TestHotObservable'缺少以下类型的属性 “主题”：观察者，已关闭，isStopped，hasError和另外5个。

以下是代码段：

import { AuthEffects } from "./auth.effects";
import { Subject } from 'rxjs';
import { TestBed } from '@angular/core/testing';
import { provideMockActions } from '@ngrx/effects/testing';
import * as AuthActions from './auth.actions';
import { hot, cold } from 'jasmine-marbles';
import { RouterTestingModule } from '@angular/router/testing';

describe('AuthEffects', () => {
    let authEffects: AuthEffects;
    let authActions: Subject<any>;

    beforeEach(() => {
        TestBed.configureTestingModule({
            imports: [
                RouterTestingModule
            ],
            providers: [
                AuthEffects,
                provideMockActions(() => authActions)
            ]
        });

        authEffects = TestBed.get(AuthEffects);
    });

    it('effect test', () => {
        let username = '';
        let password = '';
        let role = 'PARENT';
        const action = new AuthActions.TrySignin({ username, password, role });
        const completion = new AuthActions.SigninUser()

        authActions = hot('--a-', { a: action });
        const expected = cold('--b', { b: completion });

        expect(authEffects.authSignin).toBeObservable(expected);
    })
})

由于我是新手，所以我没主意。这里可能出什么问题了？

Answer 1

您必须将操作定义为可观察的-https://ngrx.io/guide/effects/testing

let actions: Observable<any>;

...

 it('should work', () => {
    actions = hot('--a-', { a: action });;
  });

类型“ TestHotObservable”缺少类型“ Subject <any>”中的以下属性：观察者，已关闭，isStopped，hasError和另外5个

1 个答案: