Question

在Mike Hartl通过示例教程学习Rails时，我收到了一个奇怪的rspec错误。

在页419，代码清单10.30：代码如下：

it "should have an element for each user" do
get :index
@users[0..2].each do |user|
response.should have_selector("li", :content => user.name)
end
end

当我运行rspec时，我收到此错误消息。：

故障：

1) UsersController GET 'index' for signed-in-users should have an element for each user
    Failure/Error: @users[0..2].each do |user|
    NoMethodError:
      You have a nil object when you didn't expect it!
      You might have expected an instance of Array.
      The error occurred while evaluating nil.[]
    # ./spec/controllers/users_controller_spec.rb:40

Finished in 2.58 seconds 75 examples, 1 failure

Failed examples:

rspec ./spec/controllers/users_controller_spec.rb:38 # UsersController GET 'index' for >signed-in-users should have an element for each user

我做了一些研究并在这个帖子中发现了类似的问题，但我仍然无法通过测试。

有什么想法吗？

参考链接：

Why are my RSpec tests failing, but my app is working?

Cookies do not persist in Rspec on rails 3.1

Rails Tutorial chapter 10.3.3 - 4 RSpec Errors (app working)

Answer 1

似乎没有在测试数据库中创建用户。通过插入

检查@users中有多个用户

puts @users.length

获取后：＆＃39;

如果这是零，你应该仔细检查你的前一块。

Answer 2

我只是想通了。

@users[0..2].each do |user|

需要成为：

User.paginate(:page => 1).each do |user|

该应用程序仍适用于任何一行，但要通过rspec测试，您需要使用User.paginate。

rspec错误：通过示例学习Rails：当你没有想到它时，你有一个nil对象

2 个答案: