Ruby on Rails 2.3.8：Factory_girl：全局变量不能在整个工厂构建过程中保持价值吗？

Question

  setup do
     @user = Factory.build(:user)
  end

so, at the top of my unit test, I have the above.

And in my unit tests, I do Factory.build(:object)

but in the factory itsself, it is saying NoMethodError: undefined method my_attribute for nil:NilClass

my factory:

Factory.define :object |o| do
   o.my_attribute @user.my_attribute
end

but @user is nil =\\

Answer 1

@user is not a global variable. It is an instance variable. In this case, @user is an instance variable of the test suite. The do...end block passed to Factory.define is not run within the context of the test suite, therefor it will have a different self and different instance variables. Instead, you need to pass the attribute value to the factory:

setup do
  @user = Factory.build(:user)
  Factory.build(:object, :my_attribute => @user.my_attribute)
end