Question

如果我的英语不完美但不是我的母语，我道歉我必须使用Rails 4.2，Rspec 3.3和FactoryGirl 4.5测试MySql数据库基础模型的测试是绿色的。当我必须测试包含无法复制的外键的模型时，就会出现问题起初我有两个模型（ dimension.rb 到 feature.rb 和 technical.rb ），每个模型都有一个来自同一个的外键model（ current.rb ）：

 #models/dimension.rb
 class Dimension < ActiveRecord::Base 
    belongs_to :current
    has_many :features
    ...
 end

#models/feature.rb
class Feature < ActiveRecord::Base 
   belongs_to :dimension
   has_many :bxes
   ...
end

#models/technical.rb
class Technical < ActiveRecord::Base
   belongs_to :current
   has_many :bxes
   ...
end

这两个模型放在最终模型中（ bxe.rb ）

#models/bxe.rb
class Bxe < ActiveRecord::Base 
 belongs_to :feature
 belongs_to :technical
 ...
 validates  :technical_id, presence: true
 validates  :feature_id, presence: true 
end

当前模型是：

#models/current.rb
 class Current < ActiveRecord::Base
   has_many :technicals
   has_many :dimensions
   validates :current, presence: true, uniqueness: true
   validates :value,   presence: true, uniqueness: true
 end

工厂如下：

#spec/factories/current.rb
 FactoryGirl.define do
  factory :current do   
   trait :lower do
    current '800A'
    value 800
   end
   trait :higher do
    current '2000A'
    value 2000
   end    
 end
end

#spec/factories/dimension.rb
FactoryGirl.define do 
 factory :dimension do
  ...
  trait :one do
    current {create(:current, :lower)}
  end     
  trait :two do
    current {create(:current, :higher)}
  end     
 end
end

#spec/factories/feature.rb
FactoryGirl.define do
 factory :feature do  
  descr 'MyString'
  dimension { create(:dimension, :one) } 
  ...
 end 
end

#spec/factories/technical.rb
FactoryGirl.define do  
 factory :technical do
  ...  
  trait :A do
    current { create(:current, :lower) }
  end
  trait :L do
    current { create(:current, :higher) }
  end         
 end
end

#spec/factories/bxes.rb
FactoryGirl.define do
  factory :bxe do
   ...
   technical {create(:technical, :A) }
   feature
  end
end

当我在模型上运行测试时，第一个命令（ technical ）运行，工厂创建一个id为1的当前记录，但第二个（ features ）失败，由于工厂再次尝试使用相同的数据创建Current记录，禁止从模型 current.rb

中执行操作

#rspec spec/models
2.1.2 :001 > FactoryGirl.create(:bxebusbar, :one)
 ...  Current Exists ... SELECT  1 AS one FROM `currents` WHERE `currents`.`current` = BINARY '800A' LIMIT 1
 ...  INSERT INTO `currents` (`current`, `value`, `created_at`, `updated_at`) VALUES ('800A', 800, ..., ...)
...  INSERT INTO `technicals` (..., `current_id`, ..., `created_at`, `updated_at`) VALUES (..., 1, ..., ...)
...  Current Exists ...  SELECT  1 AS one FROM `currents` WHERE `currents`.`current` = BINARY '800A' LIMIT 1
...  ActiveRecord::RecordInvalid: Validation failed: Current has already been taken, Value has already been taken

我认为问题可以通过仅创建一次当前记录然后在技术和功能工厂中使用它来解决，实际情况会发生什么，但我不知道该怎么做。有什么建议吗？感谢

Answer 1

您可以使用sequences生成不会重复的值。另一种选择是使用DatabaseCleaner并在每次测试后将其设置为清理数据库。

有第一个选项：

FactoryGirl.define do
  factory :current do   
   trait :lower do
    sequence :current do { |n| "#{n}A" }
    sequence :value do {|n| "#{n}" }
   end    
 end
end

或设置DataBase Cleaner：Database cleaner

Rspec整体工厂在测试中

1 个答案: