我正在尝试向项目添加测试。
我有个模特
UserModel.js

const { Model, DataTypes } = require('sequelize')
const sequelize = require('../../lib/db/config')

class User extends Model {}

User.init({
  id: {
    type: DataTypes.UUID,
    primaryKey: true,
    defaultValue: DataTypes.UUIDV4
  },
  firstName: {
    type: DataTypes.STRING,
    allowNull: false
  },
  lastName: {
    type: DataTypes.STRING
  }
}, {
  sequelize, 
  modelName: 'users'
});

然后，我想使用jest for创建一个测试，以UserService模拟UserModel。

const User = require('src/Users/UserModel')
const UsersService = require('src/Users/UserService')

jest.mock('src/Users/UserModel');

describe('UsersService', () => {
  it('Create User User', async () => {
    User.create.mockResolvedValue({ id: 'mock-user-uuid' })
    const mockUser = {
      firstName: 'mock first',
      lastName: 'mock last',
    }
    const result = await UsersService.createUser(mockUser)
    expect(result).toEqual({ ...mockUser, id: 'mock-user-uuid' })
  })
})

我得到以下错误

No Sequelize instance passed
  User.init(

有没有一种方法可以绕过对init的调用，或者哪种方法应该是创建模拟sequelize模型的单元测试的正确方法？