Unused config objects are finalized properly [GH-1877]

CHANGELOG.md

@@ -65,6 +65,7 @@ BUG FIXES:
     works properly despite misconfigured sudoers. [GH-1307]
   - Synced folder paths on Windows containing '\' are replaced with
     '/' internally so that they work properly.
+  - Unused config objects are finalized properly. [GH-1877]
 
 ## 1.2.4 (July 16, 2013)
 

lib/vagrant/config/v2/root.rb

@@ -40,6 +40,12 @@ module Vagrant
         # the Vagrant system. The "!" signifies that this is expected to
         # mutate itself.
         def finalize!
+          @config_map.each do |key, klass|
+            if !@keys.has_key?(key)
+              @keys[key] = klass.new
+            end
+          end
+
           @keys.each do |_key, instance|
             instance.finalize!
           end

test/unit/vagrant/config/v2/root_test.rb

@@ -41,6 +41,24 @@ describe Vagrant::Config::V2::Root do
     }
   end
 
+  describe "finalization" do
+    it "should finalize un-used keys" do
+      foo_class = Class.new do
+        attr_accessor :foo
+
+        def finalize!
+          @foo = "SET"
+        end
+      end
+
+      map = { :foo => foo_class }
+      instance = described_class.new(map)
+      instance.finalize!
+
+      instance.foo.foo.should == "SET"
+    end
+  end
+
   describe "validation" do
     let(:instance) do
       map = { :foo => Object, :bar => Object }