Question

我不能为我的生活似乎弄清楚为什么这三个测试都没有通过。我对rails很新，但我觉得好像我已经尝试了所有东西，至少根据教程。我确信它显而易见但我试图找到答案却是徒劳的。我失败的测试如下（摘自Michael Hartl的Rails教程）。感谢。

故障：

1）密码不存在时的用户返回有效密码的认证方法的值失败/错误：它{应该eq found_user.authenticate（@ user.password）} NoMethodError： '

中未定义的方法

authenticate' for nil:NilClass
     # ./spec/models/user_spec.rb:94:in

阻止（5个级别）

2）密码不存在时的用户返回密码无效的认证方法的值失败/错误：let（：user_for_invalid_password）{found_user.authenticate（“invalid”）} NoMethodError：未定义的方法authenticate' for nil:NilClass # ./spec/models/user_spec.rb:98:in阻止（5级） './spec/models/user_spec.rb:100:in'块（5级）in'

3）密码不存在时的用户返回无效密码的认证方法的值失败/错误：let（：user_for_invalid_password）{found_user.authenticate（“invalid”）} NoMethodError：未定义的方法authenticate' for nil:NilClass # ./spec/models/user_spec.rb:98:in阻止（5级）＃./spec/models/user_spec.rb:101:in'块（5级）in'

User_spec测试

要求'spec_helper'

describe User do

  before do 
    @user = User.new(name: "Example User", email: "user@example.com",
                      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[user@foo.COM A_US-ER@f.b.org frst.lst@foo.jp a+b@baz.cn]
    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: "user@example.com",
                        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

端端

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-z\d\-.]+\.[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

您收到的错误为found_user为零。

那是因为您没有正确关闭when password is not present描述块。所以会发生这种情况，这个无效的@user设置了一个空密码，并且一直向前推进，直到你的测试用例失败。

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

此外，请从文件底部删除最后一个end。

Michael Hartl的Rails教程第6章验证用户

1 个答案: