Do this.rb

    describe "Answer.for_parent_slug" do
      before(:each) do
        site = Factory(:site)
        @page = Factory(:page)
        @page2 = Factory(:page)
        
        @answer = Factory(:answer, :parent_slug => @page.slug, :question => "Question 1", :site_id => site.id)
        @answer2 = Factory(:answer, :parent_slug => @page2.slug, :question => "Question 2", :site_id => site.id)
      end
      
      it "should not include any answer without given parent_slug" do
        Answer.for_parent_slug(@page.slug).should_not include(@answer2) 
      end
      
      it "should include any answer that has the given parent_slug" do
        Answer.for_parent_slug(@page.slug).should include(@answer)
      end
      
    end

Instead of this.rb

    describe "answer for specified slug" do
      before(:each) do
        site = Factory(:site)
        @page = Factory(:page)
        @page2 = Factory(:page)
        
        answer = Factory(:answer, :parent_slug => @page.slug, :question => "Question 1", :site_id => site.id)
        answer2 = Factory(:answer, :parent_slug => @page2.slug, :question => "Question 2", :site_id => site.id)
      end
      
      it "should not show answer for other pages" do
        @answer = Answer.for_parent_slug(@page.slug)
        @answer.first.question.should_not include("Question 2")
      end
      
      it "should show answer for requested page" do
        @answer = Answer.for_parent_slug(@page.slug)
        @answer.first.question.should include( "Question 1" )
      end
      
    end