ruby – 使用Rspec在单元测试中测试“accepts_nested_attributes

class Tester < Person
  has_one :company
  accepts_nested_attributes_for :skill   
end

有方便的shoulda gem matcher用于测试accepts_nested_attributes_for,但是你提到你不想使用其他宝石.因此,仅使用Rspec,我们的想法是设置包含所需Tester属性的属性哈希值和包含所需技能属性的名为skill_attributes的嵌套哈希值;然后将其传递给Tester的create方法,看看它是否改变了测试人员数量和技能数量.像这样的东西：

class Tester < Person
  has_one :company
  accepts_nested_attributes_for :skill
  # lets say tester only has name required;
  # don't forget to  add :skill to attr_accessible
  attr_accessible :name,:skill
  .......................
 end

你的测试：

# spec/models/tester_spec.rb
 ......
 describe "creating Tester with valid attributes and nested Skill attributes" do
   before(:each) do
     # let's say skill has languages and experience attributes required
     # you can also get attributes differently,e.g. factory
     @attrs = {name: "Tester Testov",skill_attributes: {languages: "Ruby,Python",experience: "3 years"}}
   end

   it "should change the number of Testers by 1" do
      lambda do
        Tester.create(@attrs)
      end.should change(Tester,:count).by(1)
   end

   it "should change the number of Skills by 1" do
      lambda do
        Tester.create(@attrs)
      end.should change(Skills,:count).by(1)
   end
 end

散列语法可能不同.此外,如果您有任何唯一性验证,请确保在每次测试之前动态生成@attrs哈希.队友的欢呼声.