Rspec 存在：真实检查失败，即使它按预期工作

Question

在我正在构建的 Rails API 中，我的用户模型有以下 Rspec 测试和以下输出：

RSpec.describe User, type: :model do
  let(:michael) { User.new(email: "michael@email.com", password: "Password1", password_confirmation: "Password1") }

    it 'is not valid without a password' do
      michael.password = ''
      expect(michael).not_to be_valid, "Expect User to have a Password"
    end

  end

  1) User basic checks is not valid without a password
     Failure/Error: expect(michael).not_to be_valid, "Expect User to have a Password"
       Expect User to have a Password
     # ./spec/models/user_spec.rb:19:in `block (3 levels) in <main>'

但是，由于某种原因，这个测试失败了，即使我的用户模型上有以下内容

class User < ApplicationRecord
  has_secure_password
  validates :email, presence: true, uniqueness: true
  validates :password, presence: true
  validates :password,
            format: { with: /\A(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9]).{8,}\Z/, message: "Password must be at least 8 characters long, contain at least 1 uppercase and 1 lowercase letter and 1 number" },
            confirmation: true,
            on: :create
end

上述验证工作正常，您可以在此处看到：

➜ rails c
Running via Spring preloader in process 2774
Loading development environment (Rails 6.0.3.1)
irb(main):001:0> new = User.new
irb(main):002:0> new.email = "testing@testing.com"
irb(main):003:0> new.save
   (0.2ms)  BEGIN
  User Exists? (0.6ms)  SELECT 1 AS one FROM "users" WHERE "users"."email" = $1 LIMIT $2  [["email", "testing@testing.com"], ["LIMIT", 1]]
   (0.2ms)  ROLLBACK
=> false
irb(main):004:0> new.errors
=> #<ActiveModel::Errors:0x00007f743848dfb0 @base=#<User id: nil, email: "testing@testing.com", password_digest: nil, created_at: nil, updated_at: nil, admin: false>, @messages={:password=>["can't be blank", "can't be blank", "Password must be at least 8 characters long, contain at least 1 uppercase and 1 lowercase letter and 1 number"]}, @details={:password=>[{:error=>:blank}, {:error=>:blank}, {:error=>:invalid, :value=>nil}]}>

我到底做错了什么导致这个测试失败？这是一个非常简单的问题，除了密码测试之外，所有其他的都按预期工作。

Answer 1

首先，在您的测试中，password = '' 是有效的，因为对于 Ruby，'' 是一个东西。您必须将此添加到您的验证中： validates :password, presence: true, allow_blank: false

另外，请看一下，您的密码验证是针对 on: :create 的，而在您的规范中，您并没有创建它。