ruby-on-rails - 密码M. Hartl编写的Ruby on Rails教程

我刚刚开始使用rails，并决定遵循m.hartl的“rubyonrails教程”。好像是个不错的介绍。
我遇到了一个失败的考试，这让我发疯。
我运行的是rails 3.1.1，rspec 2.7.0
我已经尝试过修改条件，并且对“has_password”方法的测试也有效。
失败的测试：

1) User password encryption authenticate method should return the user on email/password match
Failure/Error: matching_user.should == @user
 expected: #
      got: nil (using ==)
# ./spec/models/user_spec.rb:149:in `block (4 levels) in '

The rspec test:

describe User do

before(:each) do
@attr = {:name => 'testing',
         :email =>'[email protected]',
         :password => "testtest",
         :password_confirmation => "testtest"}
end

...

describe "password encryption" do
  before(:each) do
    @user = User.create!(@attr)
  end

...

describe "authenticate method" do

  it "should exist" do
    User.should respond_to(:authenticate)
  end

  it "should return nil on email/password mismatch" do
    User.authenticate(@attr[:email], "wrongpass").should be_nil
  end

  it "should return nil for an email address with no user" do
    User.authenticate("[email protected]", @attr[:password]).should be_nil
  end

  it "should return the user on email/password match" do
    matching_user = User.authenticate(@attr[:email], @attr[:password])
    matching_user.should == @user
  end
end

在用户模型中：

...

def has_password?(submitted_password)
  encrypt_password == encrypt(submitted_password)
end

def self.authenticate(email, submitted_password)
  user = find_by_email(email) #self.where("email = ?", email)
  return nil if user.nil?
  return user if user.has_password?(submitted_password)
end

private

 def encrypt_password
   self.salt = make_salt if new_record?
   self.encrypted_password = encrypt(password)
 end

我搞不清我在这里做错了什么。

最佳答案

在你的失败规范中

matching_user.should == @user

但是@user在任何地方都没有定义，所以它被设置为nil。
编辑：
尝试将以下puts添加到失败的规范中，并在运行规范输出后查看结果。

it "should return the user on email/password match" do
  matching_user = User.authenticate(@attr[:email], @attr[:password])
  puts matching_user  # add this
  puts @user          # and also this
  matching_user.should == @user
end

关于ruby-on-rails - 密码M. Hartl编写的Ruby on Rails教程，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8089331/