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我想使用FactoryGirl创建一个自我关联的对象，用于测试类别的简单树。我已阅读FactoryGirl's Getting Started doc设置关联，但仍有问题。我想测试一个对象有父母和孩子（因为这是我的FactoryGirl定义中的设置，所以有一个孩子）。我给父测试通过，但对测试失败用于儿童FactoryGirl测试失败 - 试图建立一个自己的协会
ERROR消息
1) Category should have a child
Failure/Error: category.children.count.should eq(1)
expected: 1
got: 0
RSPEC测试
it "should have a child" do
category = FactoryGirl.build(:parent_category)
category.should_not be_nil
category.children.count.should eq(1)
end
it "should have a parent" do
category = FactoryGirl.build(:child_category)
category.should_not be_nil
category.parent.should_not be_nil
end
模型设置用于父/子关系（同一模型的） ：
class Category < ActiveRecord::Base
include ActiveModel::ForbiddenAttributesProtection
belongs_to :parent, :class_name => 'Category'
has_many :children, :class_name => 'Category', :foreign_key => 'parent_id', :dependent => :destroy
attr_accessible :name, :parent_id
validates :name, :presence => true
before_validation :uppercase_name
def uppercase_name
self.name.upcase! unless self.name.nil?
end
end
FACTORYGIRL设置：
FactoryGirl.define do
factory :category do
name "CATEGORY"
factory :parent_category do
name "PARENT"
parent_id 0
after(:create) do |pc, evaluator|
FactoryGirl.create_list(:category, 1, parent: pc)
end
end
factory :child_category do
name "CHILD"
association :parent, factory: :parent_category
end
end
end