Question

我在测试属于作者的书籍列表时收到以下错误。

Failure/Error: visit books_path
     ActionView::Template::Error:
       undefined method `name' for nil:NilClass
     # ./app/views/books/_book.html.erb:5:in `_app_views_books__book_html_erb___3197212671375452820_30961180'
     # ./app/views/books/index.html.erb:8:in `_app_views_books_index_html_erb__3030997400964951224_38341240'
     # ./spec/requests/book_pages_spec.rb:13:in `block (3 levels) in <top (required)>'

我一直试图调试它2天没有成功，我现在转向SO寻求帮助。

我必须指出Book #index正确显示所有书籍，这个bug可能就在我的测试中。我认为工厂女孩没有正确创建关联，因为book.author返回nil。

谢谢！

book.rb

class Book < ActiveRecord::Base
  attr_accessible :title
  belongs_to :author    
  validates :author_id, presence: true
end

author.rb

class Author < ActiveRecord::Base
  attr_accessible :name
  has_many :books, dependent: :destroy
end

factories.rb

FactoryGirl.define do
  factory :author do
    sequence(:name) { |n| "Author #{n}" }
  end

  factory :book do
    sequence(:title) { |n| "Lorem ipsum #{n}" }
    author
  end
end

_book.html.erb

<li>
  <span class="title"><%= link_to book.title, book_path(book) %></span>
    <span class="author"><%= link_to book.author.name, author_path(book.author) %></span>
</li>

book_pages_spec.rb

require 'spec_helper'
describe "Book pages" do
  subject { page }
  describe "index" do
    let(:author) { FactoryGirl.create(:author) }
    before(:each) do
      visit books_path
    end
    before(:all) { 32.times {FactoryGirl.create(:book, author: author)} }
    after(:all) { Author.delete_all }
    it { should have_title_and_heading("All books") }
  end
end

Answer 1

在after(:all)步骤中，您要清除作者，而不是before(:all)步骤中创建的图书。由于之前/之后：所有挂钩都在测试中的任何事务之外运行，您可能会在测试数据库中留下过时的数据。

rspec工厂女孩协会

1 个答案: