Merge pull request #2637 from johnbellone/patch-1

core: Update Registry with #keys method.

lib/vagrant/registry.rb

@@ -35,6 +35,13 @@ module Vagrant
       @items.has_key?(key)
     end
     
+    # Returns an array populated with the keys of this object.
+    #
+    # @return [Array]
+    def keys
+      @items.keys
+    end
+
     # Iterate over the keyspace.
     def each(&block)
       @items.each do |key, _|

test/unit/vagrant/registry_test.rb

@@ -41,6 +41,13 @@ describe Vagrant::Registry do
     instance["foo"].should eql(object)
   end
   
+  it "should be able to get keys with #keys" do
+    instance.register("foo") { "bar" }
+    instance.register("baz") { "qux" }
+
+    instance.keys.sort.should == [ 'baz', 'foo' ]
+  end
+
   it "should cache the result of the item so they can be modified" do
     # Make the proc generate a NEW array each time
     instance.register("foo") { [] }