rename to display_catarse_tax and more test

app/models/backer.rb

@@ -53,13 +53,13 @@ def should_not_back_if_maximum_backers_been_reached
     errors.add(:reward, I18n.t('backer.should_not_back_if_maximum_backers_been_reached')) unless reward.backers.confirmed.count < reward.maximum_backers
   end
   def display_value
-    number_to_currency value, :unit => "R$ ", :precision => 0, :delimiter => '.'
+    number_to_currency value, :unit => "R$", :precision => 0, :delimiter => '.'
   end
   def display_confirmed_at
     I18n.l(confirmed_at.to_date) if confirmed_at
   end
-  def display_moip_tax(tax=7.5)
-    number_to_currency ((value*tax)/100), :unit => "R$ ", :precision => 2, :delimiter => '.'
+  def display_catarse_tax(tax=7.5)
+    number_to_currency ((value*tax)/100), :unit => "R$", :precision => 2, :delimiter => '.'
   end
   def moip_value
     "%0.0f" % (value * 100)

spec/models/backer_spec.rb

@@ -95,6 +95,20 @@
     backer = Factory(:backer)
     backer.payment_method.should == 'MoIP'
   end
+
+  describe "#display_catarse_tax" do
+    before(:each) do
+      @backer = create(:backer, :value => 100)
+    end
+
+    it 'with default tax 7.5%'do
+      @backer.display_catarse_tax.should == 'R$ 7,50'
+    end
+
+    it 'with another tax'do
+      @backer.display_catarse_tax(5).should == 'R$ 5,00'
+    end
+  end
 end
 
 # == Schema Information