nullcart/backend/src/modules/storefrontBlog/services/StorefrontBlogPostsService.spec.ts

import { NotFoundException } from '@nestjs/common';
import type { Repository } from 'typeorm';
import { BlogPost } from '../../blog/entities/BlogPost';
import { StorefrontBlogPostsService } from './StorefrontBlogPostsService';

describe('StorefrontBlogPostsService', () => {
    let service: StorefrontBlogPostsService;
    let blogPostRepo: {
        find: jest.Mock;
        findOne: jest.Mock;
    };

    beforeEach(() => {
        blogPostRepo = {
            find: jest.fn().mockResolvedValue([]),
            findOne: jest.fn().mockResolvedValue(null)
        };

        service = new StorefrontBlogPostsService(blogPostRepo as unknown as Repository<BlogPost>);
    });

    it('lists live posts ordered by createdAt descending', async () => {
        await service.listLivePosts();

        expect(blogPostRepo.find).toHaveBeenCalledWith({
            where: { isDraft: false },
            order: { createdAt: 'DESC' }
        });
    });

    it('returns a live post by id', async () => {
        const post = { id: 'post-1', title: 'Hello', isDraft: false } as BlogPost;

        blogPostRepo.findOne.mockResolvedValue(post);

        await expect(service.getLivePost('post-1')).resolves.toBe(post);
    });

    it('throws when a draft or missing post is requested', async () => {
        await expect(service.getLivePost('missing-id')).rejects.toThrow(NotFoundException);
    });
});