Fix <=> so that two cookies of different values are not equal.

lib/http/cookie.rb

@@ -379,7 +379,8 @@ class HTTP::Cookie
     # Precedence: 1. longer path  2. older creation
     (@name <=> other.name).nonzero? ||
       (other.path.length <=> @path.length).nonzero? ||
-      @created_at <=> other.created_at
+      (@created_at <=> other.created_at).nonzero? ||
+      @value <=> other.value
   end
   include Comparable
 

test/test_http_cookie.rb

@@ -433,6 +433,11 @@ class TestHTTPCookie < Test::Unit::TestCase
       })
   end
 
+  def test_equal
+    assert_not_equal(HTTP::Cookie.new(cookie_values),
+      HTTP::Cookie.new(cookie_values(:value => 'bar')))
+  end
+
   def test_new_rejects_cookies_that_do_not_contain_an_embedded_dot
     url = URI 'http://rubyforge.org/'