Easy Active Record 教程中的失败测试

Question

我在完成教程时遇到了失败的测试：Jason Gilmore 为 Rails 开发人员编写的 Easy Active Record。

对于某些上下文，本教程指示我生成位置模型。结果如下：

rails generate model Location name:string
  invoke  active_record
  create    db/migrate/20140724130112_create_locations.rb
  create    app/models/location.rb
  invoke    rspec
  create      spec/models/location_spec.rb
  invoke      factory_girl
  create       spec/factories/locations.rb

在“使用 FactoryGirl 定义固定装置”部分，Gilmore 想展示 FactoryGirl 如何提供生成模型工厂的工具。为此，我被指示打开 spec/factories/locations.rb 并期望看到：

FactoryGirl.define do 
  factory :location do
    name "MyString"
  end
end

然后将上面的文件修改为如下所示：

FactoryGirl.define do

  factory :location do 
    name 'Pizza Works'
  end 
end

然后我被告知要保存文件，即 locations.rb 并将 return 保存到位置规范 (spec/models/location.rb) 并添加以下测试：

it "can be created using a factory" do 
  location = FactoryGirl.build(:location) 
  expect(location).to eq('Pizza Works')
end

第一个问题是没有这样的文件，即 (spec/models/location.rb) 不存在。 spec 文件夹中最接近该文件的文件是 (spec/models/location_spec.rb)。

所以猜测这是一个错字，我将上面的测试添加到 (spec/models/location_spec.rb) 而不是。

我的第一个问题是我是否错过了一个 location.rb 文件？或者这是 Gilmore 的错字？

其次，运行测试后使用

rspec -fd spec/models/location_spec.rb

教程说我应该得到以下结果

Location
  can be instantiated
  has a valid factory
  can be assigned the name of an arcade

Finished in 0.04053 seconds (files took 2.05 seconds to load)
3 examples, 0 failures

但我得到的却是

Location
  can be instantiated
  can be assigned the name of an arcade
  can be created using a factory (FAILED - 1)

Failures:

  1) Location can be created using a factory
     Failure/Error: expect(location).to eq('Pizza Works')

       expected: "Pizza Works"
            got: #<Location id: nil, created_at: nil, updated_at: nil, name: "Pizza Works", description: nil>

       (compared using ==)

       Diff:
       @@ -1,2 +1,7 @@
       -"Pizza Works"
       +#<Location:0x007fcf66060850
       + id: nil,
       + created_at: nil,
       + updated_at: nil,
       + name: "Pizza Works",
       + description: nil>

     # ./spec/models/location_spec.rb:18:in `block (2 levels) in <top (required)>'

Finished in 0.05663 seconds (files took 3.26 seconds to load)
3 examples, 1 failure

所以我的第二个问题是，为什么我的测试失败了，我应该怎么做才能解决它？

非常感谢任何帮助

Answer 1

这是规范中的一个错误。测试应该是

expect(location.name).to eq('Pizza Works')

Answer 2

您希望位置名称是 'Pizza Works'。不是对象 'location' 它自己。

更新此代码：

it "can be created using a factory" do 
  location = FactoryGirl.build(:location) 
  expect(location.name).to eq('Pizza Works')
end

Easy Active Record 教程中的失败测试

Failing test from Easy Active Record Tutorial

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