RUBY-139 add new sub-type 0. Will become default with the release of mongod 1.8

Author: banker

lib/bson/types/binary.rb

@@ -26,9 +26,10 @@ module BSON
   # Use this class when storing binary data in documents.
   class Binary < ByteBuffer
 
-    SUBTYPE_BYTES = 0x02
-    SUBTYPE_UUID = 0x03
-    SUBTYPE_MD5 = 0x05
+    SUBTYPE_SIMPLE = 0x00
+    SUBTYPE_BYTES  = 0x02
+    SUBTYPE_UUID   = 0x03
+    SUBTYPE_MD5    = 0x05
     SUBTYPE_USER_DEFINED = 0x80
 
     # One of the SUBTYPE_* constants. Default is SUBTYPE_BYTES.

test/mongo_bson/bson_test.rb

@@ -309,6 +309,18 @@ def test_binary_type
     assert_equal Binary::SUBTYPE_USER_DEFINED, bin2.subtype
   end
 
+  def test_binary_binary_subtype_0
+    bin = Binary.new([1, 2, 3, 4, 5], Binary::SUBTYPE_SIMPLE)
+
+    doc = {'bin' => bin}
+    bson = BSON::BSON_CODER.serialize(doc)
+    doc2 = BSON::BSON_CODER.deserialize(bson)
+    bin2 = doc2['bin']
+    assert_kind_of Binary, bin2
+    assert_equal [1, 2, 3, 4, 5], bin2.to_a
+    assert_equal Binary::SUBTYPE_SIMPLE, bin2.subtype
+  end
+
   def test_binary_byte_buffer
     bb = Binary.new
     5.times { |i| bb.put(i + 1) }