Allow multiple allows

lib/draper/base.rb

@@ -105,7 +105,8 @@ module Draper
     def self.allows(*input_allows)
       raise ArgumentError, "Specify at least one method (as a symbol) to allow when using allows" if input_allows.empty?
       raise ArgumentError, "Use either 'allows' or 'denies', but not both." unless (self.denied == DEFAULT_DENIED)
-      self.allowed = input_allows
+      self.allowed ||= []
+      self.allowed += input_allows
     end
 
     # Initialize a new decorator instance by passing in

spec/draper/base_spec.rb

@@ -515,6 +515,8 @@ describe Draper::Base do
   describe "a sample usage with allows" do
     let(:subject_with_allows){ DecoratorWithAllows.new(source) }
 
+    let(:subject_with_multiple_allows){ DecoratorWithMultipleAllows.new(source) }
+
     it "should echo the allowed method" do
       subject_with_allows.should respond_to(:goodnight_moon)
     end
@@ -522,6 +524,15 @@ describe Draper::Base do
     it "should echo _only_ the allowed method" do
       subject_with_allows.should_not respond_to(:hello_world)
     end
+
+    it "should echo the combined allowed methods" do
+      subject_with_multiple_allows.should respond_to(:goodnight_moon)
+      subject_with_multiple_allows.should respond_to(:hello_world)
+    end
+
+    it "should echo _only_ the combined allowed methods" do
+      subject_with_multiple_allows.should_not respond_to(:title)
+    end
   end
 
   describe "invalid usages of allows and denies" do

spec/spec_helper.rb

@@ -7,6 +7,7 @@ require './spec/support/samples/application_controller.rb'
 require './spec/support/samples/application_helper.rb'
 require './spec/support/samples/decorator.rb'
 require './spec/support/samples/decorator_with_allows.rb'
+require './spec/support/samples/decorator_with_multiple_allows.rb'
 require './spec/support/samples/decorator_with_application_helper.rb'
 require './spec/support/samples/decorator_with_denies.rb'
 require './spec/support/samples/namespaced_product.rb'