Fixed byte buffer double encoding problem. Made byte buffer work under Ruby 1.9.

lib/mongo/util/byte_buffer.rb

@@ -49,8 +49,14 @@ class ByteBuffer
     @cursor += array.length
   end
 
-  def put_int(i, offset=nil)
-    put_array([i].pack(@int_pack_order).split(//).collect{|c| c[0]}, offset)
+  if RUBY_VERSION >= '1.9'
+    def put_int(i, offset=nil)
+      put_array([i].pack(@int_pack_order).split(//).collect{|c| c.bytes.first}, offset)
+    end
+  else
+    def put_int(i, offset=nil)
+      put_array([i].pack(@int_pack_order).split(//).collect{|c| c[0]}, offset)
+    end
   end
 
   def put_long(i, offset=nil)
@@ -64,8 +70,14 @@ class ByteBuffer
     end
   end
 
-  def put_double(d, offset=nil)
-    put_array([d].pack(@double_pack_order).split(//), offset)
+  if RUBY_VERSION >= '1.9'
+    def put_double(d, offset=nil)
+      put_array([d].pack(@double_pack_order).split(//).collect{|c| c.bytes.first}, offset)
+    end
+  else
+    def put_double(d, offset=nil)
+      put_array([d].pack(@double_pack_order).split(//).collect{|c| c[0]}, offset)
+    end
   end
 
   # If +size+ == 1, returns one byte. Else returns array of bytes of length

tests/test_bson.rb

@@ -0,0 +1,17 @@
+$LOAD_PATH[0,0] = File.join(File.dirname(__FILE__), '..', 'lib')
+require 'mongo'
+require 'test/unit'
+
+# NOTE: assumes Mongo is running
+class BSONTest < Test::Unit::TestCase
+
+  def setup
+    @b = BSON.new
+  end
+
+  def test_object_encoding
+    doc = {'doc' => {'age' => 41.2, 'name' => 'Spongebob'}}
+    @b.serialize(doc)
+    assert_equal doc, @b.deserialize
+  end
+end

tests/test_byte_buffer.rb

@@ -32,6 +32,12 @@ class ByteBufferTest < Test::Unit::TestCase
     assert_equal 1027, @buf.get_long
   end
 
+  def test_get_double
+    @buf.put_double 41.2
+    @buf.rewind
+    assert_equal 41.2, @buf.get_double
+  end
+
   def test_rewrite
     @buf.put_int(0)
     @buf.rewind