如何与Factory Girl一起使用`assigns\'

  test \"should annoy Chuck Norris\" do
    son = Factory.build(:son)
    assert_difference(\'Son.count\') do
      post :create, son: { asset: son.asset, chuck_id: son.chuck }
    end

    assert_redirected_to chuck_path(assigns(son.chuck))
    assert_equal \'The world has been destroyed...\', flash[:notice]
  end

assigns(son.chuck)

son.chuck

Chucks

Factory.build(:son)

12

Chuck

assert_redirected_to

1

Expected response to be a redirect to <http://test.host/chucks/12> but was a redirect to <http://test.host/chucks/1>
          /Users/edison/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.0.rc4/lib/action_dispatch/testing/assertions/response.rb:67:in `assert_redirected_to\'