Make assert_valid_keys slightly more lenient

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2166 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/lib/active_support/core_ext/hash/keys.rb

@@ -43,8 +43,8 @@ def symbolize_keys!
         alias_method :to_options,  :symbolize_keys
         alias_method :to_options!, :symbolize_keys!
 
-        def assert_valid_keys(valid_keys)
-          unknown_keys = keys - valid_keys
+        def assert_valid_keys(*valid_keys)
+          unknown_keys = keys - [valid_keys].flatten
           raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty?
         end
       end

activesupport/test/core_ext/hash_ext_test.rb

@@ -96,10 +96,12 @@ def test_indifferent_writing
   def test_assert_valid_keys
     assert_nothing_raised do
       { :failure => "stuff", :funny => "business" }.assert_valid_keys([ :failure, :funny ])
+      { :failure => "stuff", :funny => "business" }.assert_valid_keys(:failure, :funny)
     end
     
     assert_raises(ArgumentError, "Unknown key(s): failore") do
       { :failore => "stuff", :funny => "business" }.assert_valid_keys([ :failure, :funny ])
+      { :failore => "stuff", :funny => "business" }.assert_valid_keys(:failure, :funny)
     end
   end