Fix dates to return as UTC.

Signed-off-by: Mike Dirolf <mike@dirolf.com>

lib/mongo/util/bson.rb

@@ -245,7 +245,7 @@ class BSON
 
   def deserialize_date_data(buf)
     millisecs = buf.get_long()
-    Time.at(millisecs.to_f / 1000.0) # at() takes fractional seconds
+    Time.at(millisecs.to_f / 1000.0).utc
   end
 
   def deserialize_boolean_data(buf)

lib/mongo/util/xml_to_ruby.rb

@@ -58,7 +58,7 @@ class XMLToRuby
     when 'array'
       array_to_ruby(e.elements)
     when 'date'
-      Time.at(e.text.to_f / 1000.0)
+      Time.at(e.text.to_f / 1000.0).utc
     when 'regex'
       regex_to_ruby(e.elements)
     when 'null'

tests/test_bson.rb

@@ -117,6 +117,13 @@ class BSONTest < Test::Unit::TestCase
     assert_in_delta doc['date'], doc2['date'], 0.001
   end
 
+  def test_date_returns_as_utc
+    doc = {'date' => Time.now}
+    @b.serialize(doc)
+    doc2 = @b.deserialize
+    assert_equal "UTC", doc2['date'].zone
+  end
+
   def test_dbref
     oid = ObjectID.new
     doc = {}