Question

我在Rails教程的第9章（这次是第9.2.2节）中遇到了（再次！）。我正在

bundle exec rspec spec/
................................FFF........................

Failures:

1) Authentication authorization as wrong user submitting a GET request to the Users#edit action 
 Failure/Error: before {sign_in user, no_capybara: true}
 NoMethodError:
   undefined method `new_remember_token' for #<User:0x007f8181815448>
 # ./spec/support/utilities.rb:13:in `sign_in'
 # ./spec/requests/authentication_pages_spec.rb:71:in `block (4 levels) in <top (required)>'

其他2个错误属于同一类型。

以下是导致错误的规范：

    describe "as wrong user" do
      let(:user) {FactoryGirl.create(:user)}
      let(:wrong_user) {FactoryGirl.create(:user, email: "wrong@example.com")}
      before {sign_in user, no_capybara: true}

      describe "submitting a GET request to the Users#edit action" do
        before {get edit_user_path(wrong_user)}
        specify { expect(response.body).not_to match(full_title('Edit user'))}
        specify { expect(response).to redirect_to(root_url)}
      end

      describe "submitting a PATCH request to the Users#update action" do
        before { patch user_path(wrong_user)}
        specify { expect(response).to redirect_to(root_url)}
      end
    end

以下是错误消息抱怨的方法（utilities.rb）：

def sign_in (user, options={})
  if options[:no_capybara]
    # Sign in when not using Capybara
    remember_token = User.new_remember_token
    cookies[:remember_token]
    user.update_attribute(:remember_token, User.digest(remember_token))
  else
    visit signin_path
    fill_in "Email", with: user.email
    fill_in "Password", with: user.password
    click_button "Sign in"
  end
end

模型的代码（User.rb）在这里：

class User < ActiveRecord::Base
before_save { self.email = email.downcase}
before_create :create_remember_token
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 }
validates :password, length: {minimum: 6}
has_secure_password

def User.new_remember_token
  SecureRandom.urlsafe_base64
end

def User.digest(token)
  Digest::SHA1.hexdigest(token.to_s)
end

private
  def create_remember_token
    self.remember_token = User.digest(User.new_remember_token)
  end
end

我之前遇到过sign_in方法问题，但它miraculously disappeared。我做错了什么？

Answer 1

我终于找到了我在这种情况下观察到的不稳定测试结果的罪魁祸首，很可能在之前的场合（Failure/Error: sign_in user undefined method `sign_in'，Rails named route not recognized）。问题似乎是rails默认情况下不会清除测试之间的缓存。实际上，这是彻头彻尾的可怕。看来你真的不能相信测试结果。我通过评论rails抱怨并重新运行测试的方法来实现这一点。错误持续存在意味着一件事 - rspec只是使用文件的一些缓存版本，因此忽略了我正在做的更改。因此，即使测试通过，您也无法确定它们是否确实如此。这真是奇怪。在通过谷歌搜索实现问题后，我发现如何强制使用rails来清理缓存 - 请查看jaustin的答案：is Rails.cache purged between tests?

Rails教程：未定义的方法

1 个答案: