Base TypeOrm repository mock

repository.mock.ts

class MockUserRepo<T extends { id: number; [key: string]: any }> {
  private db: T[] = []

  async create(data: Partial<T>) {
    return { ...data, id: this.db.length + 1 } as T
  }

  async save(entity: T) {
    this.db = [...this.db, entity]
    return Promise.resolve(entity)
  }

  async findOne(criteria: Partial<T>) {
    return this.db.find((user) =>
      Object.keys(criteria).every((key) => user[key] === criteria[key])
    )
  }

  async update(id: number, data: Partial<CreateUserDto>) {
    const user = this.db.find((user) => user.id === id)
    const updatedUser = { ...user, ...data } as T
    this.db = this.db.map((user) => (user.id === id ? updatedUser : user))
  }

  async delete(id: number) {
    this.db = this.db.filter((user) => user.id !== id)
  }

  clear() {
    this.db = []
  }
}