Hi there 
I wanted to know what's a good way to test whether dependent objects are really destroyed when destroying the parent object?
I have a Blog model which has_many Comment model children. These comments are set to :dependent => :destroy.
What's a good way to check this functionality in a unit test?
Thanks a lot Josh
Fernando Perez wrote:
NoMethodError: undefined method `+' for #<Class:0x22cb198>
Somewhere in your Blog or Comment code, there is a + hanging around that is trying to add an apple to a car engine.
No idea what you mean... Here's the code:
class Blog < ActiveRecord::Base validates_presence_of :user_id, :title, :content
belongs_to :user
has_many :comments, :as => :commentable, :dependent => :destroy end
class Comment < ActiveRecord::Base validates_presence_of :commentable, :subject, :body
belongs_to :user belongs_to :article belongs_to :commentable, :polymorphic => true # Kann sowohl einem Article als auch einem Blog zugehörig sein
def html_anchor "comment-#{id}" end end
have you tried:
assert_difference "Comment.count", blog.comments.count do   blog(:with_comments).destroy end
might need to put a minus before the blog.comments.count too.