ruby-on-rails - M. Hartl 的密码 Ruby on Rails 教程

Question

我刚刚开始使用 Rails，并决定遵循 M. Hartl 的“Ruby on Rails 教程”。似乎是一个很好的介绍。

我遇到了一个失败的测试，这让我抓狂。 我正在运行 rails 3.1.1，使用 rspec 2.7.0

我已经尝试修改条件，并测试“has_password”方法是否有效。

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 =>'testing@example.com',
         :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("bar@foo.com", @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

我不知道我在这里做错了什么。

Answer 1

在你失败的规范中你有

matching_user.should == @user

但是 @user 没有在任何地方定义，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，并查看运行后在规范输出中得到的结果。

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