Add a helper for fixed-width icons

app/helpers/icon_helper.rb

@@ -0,0 +1,15 @@
+module IconHelper
+  include FontAwesome::Sass::Rails::ViewHelpers
+
+  def icon_fw(icon, text = nil, html_options = {})
+    text, html_options = nil, text if text.is_a?(Hash)
+
+    if html_options.key?(:class)
+      html_options[:class] = "fa-fw #{html_options[:class]}"
+    else
+      html_options[:class] = "fa-fw"
+    end
+
+    icon(icon, text, html_options)
+  end
+end

test/helpers/icon_helper_test.rb

@@ -0,0 +1,13 @@
+require 'test_helper'
+
+class IconHelperTest < ActionView::TestCase
+  include IconHelper
+
+  test 'icon_fw generates fixed-width class' do
+    assert_equal '<i class="fa fa-gear fa-fw"></i>', icon_fw('gear')
+  end
+
+  test 'icon_fw accepts an additional class' do
+    assert_equal '<i class="fa fa-gear fa-fw myclass"></i>', icon_fw('gear', class: 'myclass')
+  end
+end