迈克尔·哈特(Michael Hartl)第6章验证用户的Rails教程

Question

我一生都不能弄清楚为什么这三个测试没有通过。我对Rails非常新鲜，但至少根据教程，我觉得我已经尝试了所有事情。我敢肯定，这很明显，但是我寻找答案的尝试徒劳无功。我的测试失败如下（从迈克尔·哈特（Michael Hartl）的Rails教程中提取）。谢谢。

失败：

1）当密码不存在带有有效密码的身份验证方法的返回值时用户 失败/错误：IT {应该eq und_user.authenticate（@user.password）} nomethoderror： 未定义的方法authenticate' for nil:NilClass # ./spec/models/user_spec.rb:94:in块（5级）'

2）当密码不存在无效密码的身份验证方法的返回值时用户 故障/错误：LET（：USER_FOR_INVALID_PASSWORD）{ nomethoderror： 未定义的方法authenticate' for nil:NilClass # ./spec/models/user_spec.rb:98:in块（5级） ＃./spec/models/user_spec.rb:100:在'

中的block（5级）

3）当密码不存在无效密码的身份验证方法的返回值时用户 故障/错误：LET（：USER_FOR_INVALID_PASSWORD）{ nomethoderror： 未定义的方法authenticate' for nil:NilClass # ./spec/models/user_spec.rb:98:in块（5级） ＃./spec/models/user_spec.rb:101:在'

中的block（5级）

user_spec测试

需要'spec_helper'

describe User do
  before do 
    @user = User.new(name: "Example User", email: "[e-mail]",
                      password: "foobar", password_confirmation: "foobar")
  end

  subject { @user }
  it { should respond_to(:name) }
  it { should respond_to(:email) }
  it { should respond_to(:password_digest) }
  it { should respond_to(:password) }
  it { should respond_to(:password_confirmation) }
  it { should respond_to(:authenticate) }
  it { should be_valid }
  describe "when name is not present" do
    before { @user.name = " " }
    it { should_not be_valid }
  end
  it "should be valid" do
    expect(@user).to be_valid
  end
  describe "when email is not present" do
    before { @user.email = " " }
    it { should_not be_valid }
  end
  describe "when name is too long" do
    before { @user.name = 'a' * 51 }
    it { should_not be_valid }
  end
  describe "when email format is invalid" do
  it "should be invalid" do
    addresses = %w[user@foo,com user_at_foo.org example.user@foo.
                   foo@bar_baz.com foo@bar+baz.com]
    addresses.each do |invalid_address|
      @user.email = invalid_address
      expect(@user).not_to be_valid
    end
  end
end
describe "when email format is valid" do
  it "should be valid" do
    addresses = %w[[e-mail] [e-mail] [e-mail] [e-mail]]
    addresses.each do |valid_address|
      @user.email = valid_address
      expect(@user).to be_valid
    end
  end
end
describe "when email address is already taken" do
  before do
    user_with_same_email = @user.dup
    user_with_same_email.email = @user.email.upcase
    user_with_same_email.save
  end
  it { should_not be_valid }
  end
  describe "when password is not present" do
    before do
      @user = User.new(name:"Example User", email: "[e-mail]",
                        password: " ", password_confirmation: " ")
    end
    it { should_not be_valid }

  describe "when password does not match confirmation" do
    before { @user.password_confirmation = "mismatch" }
    it { should_not be_valid }
  end
  describe "with a password thats too short" do
    before { @user.password = @user.password_confirmation = "a" * 5 }
    it { should be_invalid }
  end
  describe "return value of authenticate method" do
  before { @user.save }
  let(:found_user) { User.find_by(email: @user.email) }
  describe "with valid password" do
    it { should eq found_user.authenticate(@user.password) }
  end
  describe "with invalid password" do
    let(:user_for_invalid_password) { found_user.authenticate("invalid") }
    it { should_not eq user_for_invalid_password }
    specify { expect(user_for_invalid_password).to be_false }
  end
end

结束结束

用户模型

class User < ActiveRecord::Base 
  before_save { self.email = email.downcase }
  validates :name, presence: true, length: { maximum: 50 }
  VALID_EMAIL_REGEX = /A[w+-.]+@[a-zd-.]+.[a-z]+z/i
  validates :email, presence: true, format: { with: VALID_EMAIL_REGEX },
                    uniqueness: { case_sensitive: false }
  has_secure_password
  validates :password, length: { minimum: 6 }
end

Answer 1

您正在遇到错误，因为 found_user是nil。

那是因为您未关闭when password is not present正确描述块。因此，发生的事情是，该无效的@user设置为空白密码，并将其携带到您的测试用例失败之前。

  describe "when password is not present" do
    before do
      @user = User.new(name:"Example User", email: "[e-mail]",
                       password: " ", password_confirmation: " ")
    end
    it { should_not be_valid }
  end  ### Add end here

另外，从文件底部删除最后的end。