MCP TODO Server

import { TodoService } from '@/todo/todo.service'; import { NotFoundException } from '@nestjs/common'; import { Test, TestingModule } from '@nestjs/testing'; describe('TodoService', () => { let service: TodoService; beforeEach(async () => { const module: TestingModule = await Test.createTestingModule({ providers: [TodoService], }).compile(); service = module.get<TodoService>(TodoService); }); it('should be defined', () => { expect(service).toBeDefined(); }); describe('create', () => { it('should create a new todo', () => { const dto = { title: 'Test Todo', description: 'Test Description' }; const todo = service.create(dto); expect(todo).toEqual({ id: 1, ...dto, completed: false, }); expect(service.findAll()).toHaveLength(1); }); }); describe('findAll', () => { it('should return an empty array initially', () => { expect(service.findAll()).toEqual([]); }); it('should return all todos', () => { service.create({ title: 'Todo 1' }); service.create({ title: 'Todo 2' }); expect(service.findAll()).toHaveLength(2); }); }); describe('findOne', () => { it('should return a todo if it exists', () => { const created = service.create({ title: 'Test' }); const found = service.findOne(created.id); expect(found).toEqual(created); }); it('should throw NotFoundException if todo does not exist', () => { expect(() => service.findOne(999)).toThrow(NotFoundException); }); }); describe('update', () => { it('should update a todo', () => { const created = service.create({ title: 'Before' }); const updated = service.update(created.id, { title: 'After', completed: true, }); expect(updated.title).toBe('After'); expect(updated.completed).toBe(true); }); it('should throw NotFoundException if todo to update does not exist', () => { expect(() => service.update(999, { title: 'No' })).toThrow( NotFoundException, ); }); }); describe('remove', () => { it('should remove a todo', () => { const created = service.create({ title: 'To Delete' }); service.remove(created.id); expect(service.findAll()).toHaveLength(0); }); it('should throw NotFoundException if todo to remove does not exist', () => { expect(() => service.remove(999)).toThrow(NotFoundException); }); }); });