todo-list.service.spec

import { TestBed } from '@angular/core/testing';
import { Store } from '@ngrx/store';
import { MockStore, provideMockStore } from '@ngrx/store/testing';
import { first } from 'rxjs/operators';

import { TodoListService } from '@app/core/todo-list/todo-list.service';
import { TODOItem } from '@app/shared/models/todo-item';
import { TodoListState } from './redux-api/todo-list.model';

describe('Service: TodoList', () => {
  let todoListService: TodoListService;
  let store: MockStore<TodoListState>;
  const initialState = {};

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        todoListService,
        {
          provide:
        },
        provideMockStore({ initialState }),
      ],
    });

    todoListService = TestBed.get(todoListService);
    store = TestBed.get(Store);
  });

  it('should return the todo list', (done) => {

    const todoList = [{
      id: 'some-todo-item1'
    } as TODOItem];
    store.setState({ todos: todoList, isLoading: false })

    todoListService.todoList$.pipe(first()).subscribe((todoList) => {
      expect(todoList).toBe(todoList);
      done();
    });
  });
});