Got error : can't be blank, Rails test - ruby-on-rails-3

Question

I would like to do testing my rails application, especially on controller, here are the code
customer_controller_test.rb
require 'test_helper'
class CustomersControllerTest < ActionController::TestCase
include Devise::TestHelpers
setup do
#user = FactoryGirl.create(:user)
#role = FactoryGirl.create(:role)
#puts #role.name
#permission = FactoryGirl.create(:permission)
#puts #permission.name
#role_permission = FactoryGirl.create(:role_permission)
#puts #role_permission.role_id
#puts #role_permission.permission_id
sign_in #user
#customer = FactoryGirl.create(:customer)
end
test "should get index" do
get :index
assert_response :success
assert_template 'index'
assert_not_nil assigns(:customers)
end
test "should show article" do
get :show, :id => #customer.to_param
assert_response :success
assert_template 'show'
assert_not_nil assigns(:customer)
assert assigns(:customer).valid?
end
test "should get new" do
#login_as(#user)
get :new
assert_response :success
end
end
factories.rb <-- setup tha fixtures with factorygirl
FactoryGirl.define do
sequence :email do |n| "admin#admin.admin#{n}" end
sequence :role_name do |n| n end
sequence :role_id do |n| n end
sequence :permission_id do |n| n end
factory :user do |u|
u.name "Admin"
u.role_id {1}
u.email do FactoryGirl.generate(:email) end
u.password "123456"
u.after(:create) do |user|
user.creator_id {1}
user.save
end
end
factory :customer do
name "Test customer-name"
code "Test customer-code"
address "Test customer-address"
phone "Test customer phone"
end
factory :permission do
name "Customer"
end
factory :role do
name do FactoryGirl.generate(:role_name) end
end
end
And I got error
Any idea? Thx before

Answer 1

Try creating the role in FactoryGirl before assigning it to the user. It looks like you've got a validation error when saving your User record, because it's trying to validate that you've got an actual role assigned. You don't, because you're attempting to create your role after your user.
Just try switching the two lines in your FactoryGirl "setup" like this:
#role = FactoryGirl.create(:role)
#user = FactoryGirl.create(:user)
Or, check out this link for a more thorough examination of how to use FactoryGirl to test associations:
http://blog.joshsoftware.com/2011/05/13/testing-associations-with-factory-girl/