add test for label_text method

test/form_builder/label_test.rb

@@ -68,4 +68,14 @@ class LabelTest < ActionView::TestCase
       assert_select 'label.integer[for=user_age]', "Age:"
     end
   end
+
+  test 'configuration allow set label text for wrappers' do
+    swap_wrapper :default, self.custom_wrapper_with_label_text do
+      with_concat_form_for(@user) do |f|
+        concat f.input :age
+      end
+      assert_select "label.integer[for=user_age]", "**Age**"
+    end
+  end
+
 end

test/support/misc_helpers.rb

@@ -84,6 +84,12 @@ module MiscHelpers
     end
   end
 
+  def custom_wrapper_with_label_text
+    SimpleForm.build :label_text => lambda { |label, required| "**#{label}**" } do |b|
+      b.use :label_input
+    end
+  end
+
   def custom_form_for(object, *args, &block)
     simple_form_for(object, *(args << { :builder => CustomFormBuilder }), &block)
   end