Check for a disabled link with Capybara + Rspec.

Assert disabled link

scenario 'I should see user soft delete button disabled' do
  within("#user_#{@user.id}") do
    page.should have_link I18n.t('soft_destroyed'), disabled: true
  end
end

# capybara (3.30.0)

     ArgumentError:
       Invalid option(s) :disabled, should be one of :above, :below, :left_of, :right_of, :near, :count, :minimum, :maximum, :between, :text, :id, :class, :style, :visible, :obscured, :exact, :exact_text, :normalize_ws, :match, :wait, :filter_set, :href, :href, :alt, :title, :download

disabled - is an invalid option for have_link