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sample/31-graphql-federation-code-first/posts-application/src/posts/posts.resolver.spec.ts
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soudai-s
sample(31): modify queries
15 окт 2021, 07:01
15 окт 2021, 07:01
213d066
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import { Test, TestingModule } from '@nestjs/testing'; import { Post } from './models/post.model'; import { PostsResolver } from './posts.resolver'; import { PostsService } from './posts.service'; const mockPost: Post = { authorId: 1, id: 1, title: 'Mock Post', }; const postsServiceMock = { findOne: jest.fn((id: number): Post => mockPost), findAll: jest.fn((): Post[] => [mockPost]), }; describe('PostsResolver', () => { let resolver: PostsResolver; beforeEach(async () => { const module: TestingModule = await Test.createTestingModule({ providers: [ PostsResolver, { provide: PostsService, useValue: postsServiceMock }, ], }).compile(); resolver = module.get<PostsResolver>(PostsResolver); }); it('should be defined', () => { expect(resolver).toBeDefined(); }); it('should query for a single post', () => { const result = resolver.post(1); expect(result.id).toEqual(1); }); it('should query all posts', () => { const result = resolver.posts(); expect(Array.isArray(result)).toEqual(true); }); it('should resolve the user of a post', () => { const result = resolver.user(mockPost); expect(result).toEqual( expect.objectContaining({ __typename: 'User', id: mockPost.authorId, }), ); }); });