Hash#to_param is doesn't use sort anymore, some tests added for Hash#to_param

activesupport/lib/active_support/core_ext/object/to_param.rb

@@ -44,6 +44,6 @@ class Hash
   def to_param(namespace = nil)
     collect do |key, value|
       value.to_query(namespace ? "#{namespace}[#{key}]" : key)
-    end.sort * '&'
+    end * '&'
   end
 end

activesupport/test/core_ext/hash_ext_test.rb

@@ -2,6 +2,8 @@
 require 'active_support/core_ext/hash'
 require 'bigdecimal'
 require 'active_support/core_ext/string/access'
+require 'active_support/ordered_hash'
+require 'active_support/core_ext/object/conversions'
 
 class HashExtTest < Test::Unit::TestCase
   def setup
@@ -449,6 +451,29 @@ def to_xml(options = {})
   end
 end
 
+class HashExtToParamTests < Test::Unit::TestCase
+  class ToParam < String
+    def to_param
+      "#{self}-1"
+    end
+  end
+
+  def test_string_hash
+    assert_equal '', {}.to_param
+    assert_equal 'hello=world', { :hello => "world" }.to_param
+    assert_equal 'hello=10', { "hello" => 10 }.to_param
+    assert_equal 'hello=world&say_bye=true', ActiveSupport::OrderedHash[:hello, "world", "say_bye", true].to_param
+  end
+
+  def test_number_hash
+    assert_equal '10=20&30=40&50=60', ActiveSupport::OrderedHash[10, 20, 30, 40, 50, 60].to_param
+  end
+
+  def test_to_param_hash
+    assert_equal 'custom=param-1&custom2=param2-1', ActiveSupport::OrderedHash[ToParam.new('custom'), ToParam.new('param'), ToParam.new('custom2'), ToParam.new('param2')].to_param
+  end
+end
+
 class HashToXmlTest < Test::Unit::TestCase
   def setup
     @xml_options = { :root => :person, :skip_instruct => true, :indent => 0 }