# Test walidatora adresu e-mail z uyciem poprawnego adresu
  def test_email_with_valid_examples
    user = @valid_user
    valid_endings = %w{com org net edu es jp info}
    valid_emails = valid_endings.collect do |ending|
      "foo.bar_1-9@baz-quux0.example.#{ending}"
    end
    
    valid_emails.each do |email|
      user.email = email
      assert user.valid?, "#{email} musi by prawidowym adresem e-mail."
    end
  end  

