RUBY-74 raise InvalidDocument for any unrecognized types

ext/cbson/cbson.c

@@ -369,6 +369,9 @@ static int write_element_allow_id(VALUE key, VALUE value, VALUE extra, int allow
                 SAFE_WRITE_AT_POS(buffer, length_location, (const char*)&obj_length, 4);
                 break;
             }
+            buffer_free(buffer);
+            rb_raise(InvalidDocument, "Unsupported type for BSON (%d)", TYPE(value));
+            break;
         }
     case T_DATA:
         {
@@ -421,7 +424,7 @@ static int write_element_allow_id(VALUE key, VALUE value, VALUE extra, int allow
     default:
         {
             buffer_free(buffer);
-            rb_raise(rb_eTypeError, "no c encoder for this type yet (%d)", TYPE(value));
+            rb_raise(InvalidDocument, "Unsupported type for BSON (%d)", TYPE(value));
             break;
         }
     }

lib/mongo/util/bson_ruby.rb

@@ -554,7 +554,7 @@ class BSON_RUBY
     when Symbol
       SYMBOL
     else
-      raise "Unknown type of object: #{o.class.name}"
+      raise InvalidDocument, "Unknown type of object: #{o.class.name}"
     end
   end
 

test/test_bson.rb

@@ -335,4 +335,15 @@ class BSONTest < Test::Unit::TestCase
     end
   end
 
+  def test_invalid_object
+    o = Object.new
+    assert_raise InvalidDocument do
+      BSON.serialize({:foo => o})
+    end
+
+    assert_raise InvalidDocument do
+      BSON.serialize({:foo => Date.today})
+    end
+  end
+
 end