Cancancan gem while using Rspec - ruby-on-rails

Question

I have problem with my feature test for users creating new content. It passes only when I comment or delete this line in my controller. It looks like factory :user doesn't have ability to create new content. I checked factory using seperate test to check if it has ability to create new word and it has. What can be problem here?
authorize! :create, #word, :message => "Musisz się zalogować, aby dodać nowe słówko."
words_controller.rb
def create
authorize! :create, #word, :message => "Musisz się zalogować, aby dodać nowe słówko."
#user = current_user
#word = #user.words.build(word_params)
respond_to do |format|
if #word.save
format.html {
redirect_to new_word_path
flash[:notice] = 'Słówko zostało prawidłowo zapisane. Dodaj następne!'
}
format.json { render :show, status: :created, location: #word }
else
format.html { render :new }
format.json { render json: #word.errors, status: :unprocessable_entity }
end
end
end
user_creates_word_spec.rb
require 'spec_helper'
feature 'User creates word' do
before(:all) do
category = FactoryGirl.create(:category)
10.times { word = FactoryGirl.create(:word) }
sign_in
expect(page).to have_content 'Wyloguj się'
visit game_words_path
click_link('Dodaj słówko')
end
scenario 'with valid input' do
fill_in 'Angielski', with: 'house'
fill_in 'Polski', with: 'dom'
find(:css, ".check_boxes[value='1']").set(true)
click_button 'Zapisz'
expect(page).to have_content 'Słówko zostało prawidłowo zapisane.'
end
end
test to check if user factory has ability to create new word
it "can create new word" do
user = FactoryGirl.create(:user)
ability = Ability.new(user)
word = Word.new(user: user)
expect { ability.should be_able_to(:create, word)}
end

Answer 1

I changed this lines:
authorize! :create, #word, :message => "Musisz się zalogować, aby dodać nowe słówko."
#user = current_user
#word = #user.words.build(word_params)
to:
#user = current_user
#word = #user.words.build(word_params)
authorize! :create, #word, :message => "Musisz się zalogować, aby dodać nowe słówko."
And it works fine. In the previous version variable #word was definied after authorize! method, so it doesn't work properly.