RUBY-158 deprecate BSON::ObjectID for BSON::ObjectId

ext/cbson/cbson.c

@@ -75,6 +75,7 @@
 static VALUE Binary;
 static VALUE Time;
 static VALUE ObjectID;
+static VALUE ObjectId;
 static VALUE DBRef;
 static VALUE Code;
 static VALUE MinKey;
@@ -379,7 +380,7 @@ static int write_element(VALUE key, VALUE value, VALUE extra, int allow_id) {
                 SAFE_WRITE(buffer, RSTRING_PTR(string_data), length);
                 break;
             }
-            if (strcmp(cls, "BSON::ObjectID") == 0) {
+            if ((strcmp(cls, "BSON::ObjectId") == 0) || (strcmp(cls, "BSON::ObjectID") == 0)) {
                 VALUE as_array = rb_funcall(value, rb_intern("to_a"), 0);
                 int i;
                 write_name_and_type(buffer, key, 0x07);
@@ -691,7 +692,7 @@ static VALUE get_value(const char* buffer, int* position, int type) {
         {
             VALUE str = rb_str_new(buffer + *position, 12);
             VALUE oid = rb_funcall(str, rb_intern("unpack"), 1, rb_str_new2("C*"));
-            value = rb_class_new_instance(1, &oid, ObjectID);
+            value = rb_class_new_instance(1, &oid, ObjectId);
             *position += 12;
             break;
         }
@@ -756,7 +757,7 @@ static VALUE get_value(const char* buffer, int* position, int type) {
 
             str = rb_str_new(buffer + *position, 12);
             oid = rb_funcall(str, rb_intern("unpack"), 1, rb_str_new2("C*"));
-            id = rb_class_new_instance(1, &oid, ObjectID);
+            id = rb_class_new_instance(1, &oid, ObjectId);
             *position += 12;
 
             argv[0] = collection;
@@ -916,6 +917,8 @@ void Init_cbson() {
     Binary = rb_const_get(bson, rb_intern("Binary"));
     rb_require("bson/types/objectid");
     ObjectID = rb_const_get(bson, rb_intern("ObjectID"));
+    rb_require("bson/types/object_id");
+    ObjectId = rb_const_get(bson, rb_intern("ObjectId"));
     rb_require("bson/types/dbref");
     DBRef = rb_const_get(bson, rb_intern("DBRef"));
     rb_require("bson/types/code");

lib/bson.rb

@@ -60,6 +60,7 @@ require 'bson/types/binary'
 require 'bson/types/code'
 require 'bson/types/dbref'
 require 'bson/types/objectid'
+require 'bson/types/object_id'
 require 'bson/types/min_max_keys'
 
 require 'base64'

lib/bson/bson_ruby.rb

@@ -360,7 +360,7 @@ module BSON
     end
 
     def deserialize_oid_data(buf)
-      ObjectID.new(buf.get(12))
+      ObjectId.new(buf.get(12))
     end
 
     def deserialize_dbref_data(buf)
@@ -562,6 +562,8 @@ module BSON
         REGEX
       when ObjectID
         OID
+      when ObjectId
+        OID
       when DBRef
         REF
       when true, false

lib/bson/exceptions.rb

@@ -32,6 +32,9 @@ module BSON
   # Raised when attempting to initialize an invalid ObjectID.
   class InvalidObjectID < BSONError; end
 
+  # Raised when attempting to initialize an invalid ObjectID.
+  class InvalidObjectId < BSONError; end
+
   # Raised when trying to insert a document that exceeds the 4MB limit or
   # when the document contains objects that can't be serialized as BSON.
   class InvalidDocument < BSONError; end

lib/bson/types/object_id.rb

@@ -0,0 +1,186 @@
+# encoding: UTF-8
+
+# --
+# Copyright (C) 2008-2010 10gen Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ++
+
+require 'thread'
+require 'socket'
+require 'digest/md5'
+
+module BSON
+
+  def BSON::ObjectId(s)
+    ObjectId.from_string(s)
+  end
+
+  # Generates MongoDB object ids.
+  #
+  # @core objectids
+  class ObjectId
+    @@lock  = Mutex.new
+    @@index = 0
+
+    # Create a new object id. If no parameter is given, an id corresponding
+    # to the ObjectId BSON data type will be created. This is a 12-byte value
+    # consisting of a 4-byte timestamp, a 3-byte machine id, a 2-byte process id,
+    # and a 3-byte counter.
+    #
+    # @param [Array] data should be an array of bytes. If you want
+    #   to generate a standard MongoDB object id, leave this argument blank.
+    def initialize(data=nil)
+      @data = data || generate
+    end
+
+    # Determine if the supplied string is legal. Legal strings will
+    # consist of 24 hexadecimal characters.
+    #
+    # @param [String] str
+    #
+    # @return [Boolean]
+    def self.legal?(str)
+      len = 24
+      str =~ /([0-9a-f]+)/i
+      match = $1
+      str && str.length == len && match == str
+    end
+
+    # Create an object id from the given time. This is useful for doing range
+    # queries; it works because MongoDB's object ids begin
+    # with a timestamp.
+    #
+    # @param [Time] time a utc time to encode as an object id.
+    #
+    # @return [Mongo::ObjectId]
+    #
+    # @example Return all document created before Jan 1, 2010.
+    #   time = Time.utc(2010, 1, 1)
+    #   time_id = ObjectId.from_time(time)
+    #   collection.find({'_id' => {'$lt' => time_id}})
+    def self.from_time(time)
+      self.new([time.to_i,0,0].pack("NNN").unpack("C12"))
+    end
+
+    # Adds a primary key to the given document if needed.
+    #
+    # @param [Hash] doc a document requiring an _id.
+    #
+    # @return [Mongo::ObjectId, Object] returns a newly-created or 
+    #   current _id for the given document.
+    def self.create_pk(doc)
+      doc.has_key?(:_id) || doc.has_key?('_id') ? doc : doc.merge!(:_id => self.new)
+    end
+
+    # Check equality of this object id with another.
+    #
+    # @param [Mongo::ObjectId] object_id
+    def eql?(object_id)
+      @data == object_id.instance_variable_get("@data")
+    end
+    alias_method :==, :eql?
+
+    # Get a unique hashcode for this object.
+    # This is required since we've defined an #eql? method.
+    #
+    # @return [Integer]
+    def hash
+      @data.hash
+    end
+
+    # Get an array representation of the object id.
+    #
+    # @return [Array]
+    def to_a
+      @data.dup
+    end
+
+    # Given a string representation of an ObjectId, return a new ObjectId
+    # with that value.
+    #
+    # @param [String] str
+    #
+    # @return [Mongo::ObjectId]
+    def self.from_string(str)
+      raise InvalidObjectId, "illegal ObjectId format" unless legal?(str)
+      data = []
+      12.times do |i|
+        data[i] = str[i * 2, 2].to_i(16)
+      end
+      self.new(data)
+    end
+
+    # Get a string representation of this object id.
+    #
+    # @return [String]
+    def to_s
+      str = ' ' * 24
+      12.times do |i|
+        str[i * 2, 2] = '%02x' % @data[i]
+      end
+      str
+    end
+
+    def inspect
+      "BSON::ObjectId('#{to_s}')"
+    end
+
+    # Convert to MongoDB extended JSON format. Since JSON includes type information,
+    # but lacks an ObjectId type, this JSON format encodes the type using an $oid key.
+    #
+    # @return [String] the object id represented as MongoDB extended JSON.
+    def to_json(*a)
+      "{\"$oid\": \"#{to_s}\"}"
+    end
+
+    # Return the UTC time at which this ObjectId was generated. This may
+    # be used in lieu of a created_at timestamp since this information
+    # is always encoded in the object id.
+    #
+    # @return [Time] the time at which this object was created.
+    def generation_time
+      Time.at(@data.pack("C4").unpack("N")[0]).utc
+    end
+
+    private
+
+    # We need to define this method only if CBson isn't loaded.
+    unless defined? CBson
+      def generate
+        oid = ''
+
+        # 4 bytes current time
+        time = Time.new.to_i
+        oid += [time].pack("N")
+
+        # 3 bytes machine
+        oid += Digest::MD5.digest(Socket.gethostname)[0, 3]
+
+        # 2 bytes pid
+        oid += [Process.pid % 0xFFFF].pack("n")
+
+        # 3 bytes inc
+        oid += [get_inc].pack("N")[1, 3]
+
+        oid.unpack("C12")
+      end
+    end
+
+    def get_inc
+      @@lock.synchronize do
+        @@index = (@@index + 1) % 0xFFFFFF
+      end
+    end
+  end
+end

lib/bson/types/objectid.rb

@@ -33,6 +33,8 @@ module BSON
     @@lock  = Mutex.new
     @@index = 0
 
+    # @deprecated
+    #
     # Create a new object id. If no parameter is given, an id corresponding
     # to the ObjectID BSON data type will be created. This is a 12-byte value
     # consisting of a 4-byte timestamp, a 3-byte machine id, a 2-byte process id,
@@ -41,6 +43,7 @@ module BSON
     # @param [Array] data should be an array of bytes. If you want
     #   to generate a standard MongoDB object id, leave this argument blank.
     def initialize(data=nil)
+      warn "BSON::ObjectID is deprecated. Please use BSON::ObjectId instead."
       @data = data || generate
     end
 

lib/mongo/collection.rb

@@ -58,7 +58,7 @@ module Mongo
 
       @db, @name  = db, name
       @connection = @db.connection
-      @pk_factory = pk_factory || BSON::ObjectID
+      @pk_factory = pk_factory || BSON::ObjectId
       @hint = nil
     end
 
@@ -145,15 +145,19 @@ module Mongo
       hint   = opts.delete(:hint)
       snapshot = opts.delete(:snapshot)
       batch_size = opts.delete(:batch_size)
+
       if opts[:timeout] == false && !block_given?
         raise ArgumentError, "Timeout can be set to false only when #find is invoked with a block."
+      else
+        timeout = opts.delete(:timeout) || false
       end
-      timeout = block_given? ? opts.fetch(:timeout, true) : true
+
       if hint
         hint = normalize_hint_fields(hint)
       else
         hint = @hint        # assumed to be normalized already
       end
+
       raise RuntimeError, "Unknown options [#{opts.inspect}]" unless opts.empty?
 
       cursor = Cursor.new(self, :selector => selector, :fields => fields, :skip => skip, :limit => limit,
@@ -173,9 +177,9 @@ module Mongo
     # @return [OrderedHash, Nil]
     #   a single document or nil if no result is found.
     #
-    # @param [Hash, ObjectID, Nil] spec_or_object_id a hash specifying elements 
+    # @param [Hash, ObjectId, Nil] spec_or_object_id a hash specifying elements 
     #   which must be present for a document to be included in the result set or an 
-    #   instance of ObjectID to be used as the value for an _id query.
+    #   instance of ObjectId to be used as the value for an _id query.
     #   If nil, an empty selector, {}, will be used.
     #
     # @option opts [Hash]
@@ -187,12 +191,12 @@ module Mongo
       spec = case spec_or_object_id
              when nil
                {}
-             when BSON::ObjectID
+             when BSON::ObjectId
                {:_id => spec_or_object_id}
              when Hash
                spec_or_object_id
              else
-               raise TypeError, "spec_or_object_id must be an instance of ObjectID or Hash, or nil"
+               raise TypeError, "spec_or_object_id must be an instance of ObjectId or Hash, or nil"
              end
       find(spec, opts.merge(:limit => -1)).next_document
     end
@@ -204,7 +208,7 @@ module Mongo
     #   then an update (upsert) operation will be performed, and any existing
     #   document with that _id is overwritten. Otherwise an insert operation is performed.
     #
-    # @return [ObjectID] the _id of the saved document.
+    # @return [ObjectId] the _id of the saved document.
     #
     # @option opts [Boolean, Hash] :safe (+false+)
     #   run the operation in safe mode, which run a getlasterror command on the
@@ -230,7 +234,7 @@ module Mongo
     # @param [Hash, Array] doc_or_docs
     #   a document (as a hash) or array of documents to be inserted.
     #
-    # @return [ObjectID, Array]
+    # @return [ObjectId, Array]
     #   the _id of the inserted document or a list of _ids of all inserted documents.
     #   Note: the object may have been modified by the database's PK factory, if it has one.
     #

lib/mongo/db.rb

@@ -60,7 +60,7 @@ module Mongo
     # @option options [Boolean] :strict (False) If true, collections must exist to be accessed and must
     #   not exist to be created. See DB#collection and DB#create_collection.
     #
-    # @option options [Object, #create_pk(doc)] :pk (Mongo::ObjectID) A primary key factory object,
+    # @option options [Object, #create_pk(doc)] :pk (Mongo::ObjectId) A primary key factory object,
     #   which should take a hash and return a hash which merges the original hash with any primary key
     #   fields the factory wishes to inject. (NOTE: if the object already has a primary key,
     #   the factory should not inject a new key).

lib/mongo/gridfs/grid.rb

@@ -51,7 +51,7 @@ module Mongo
     #
     # @option opts [String] :filename (nil) a name for the file.
     # @option opts [Hash] :metadata ({}) any additional data to store with the file.
-    # @option opts [ObjectID] :_id (ObjectID) a unique id for
+    # @option opts [ObjectId] :_id (ObjectId) a unique id for
     #   the file to be use in lieu of an automatically generated one.
     # @option opts [String] :content_type ('binary/octet-stream') If no content type is specified,
     #   the content type will may be inferred from the filename extension if the mime-types gem can be
@@ -60,7 +60,7 @@ module Mongo
     # @option opts [Boolean] :safe (false) When safe mode is enabled, the chunks sent to the server
     #   will be validated using an md5 hash. If validation fails, an exception will be raised.
     #
-    # @return [Mongo::ObjectID] the file's id.
+    # @return [Mongo::ObjectId] the file's id.
     def put(data, opts={})
       filename = opts[:filename]
       opts.merge!(default_grid_io_opts)

lib/mongo/gridfs/grid_ext.rb

@@ -42,7 +42,7 @@ module Mongo
       #
       #   # Check for existence by _id
       #   @grid = Grid.new(@db)
-      #   @grid.exist?(:_id => BSON::ObjectID.from_string('4bddcd24beffd95a7db9b8c8'))
+      #   @grid.exist?(:_id => BSON::ObjectId.from_string('4bddcd24beffd95a7db9b8c8'))
       #
       #   # Check for existence by an arbitrary attribute.
       #   @grid = Grid.new(@db)

lib/mongo/gridfs/grid_file_system.rb

@@ -55,7 +55,7 @@ module Mongo
     # @param [Hash] opts see GridIO#new
     #
     # @option opts [Hash] :metadata ({}) any additional data to store with the file.
-    # @option opts [ObjectID] :_id (ObjectID) a unique id for
+    # @option opts [ObjectId] :_id (ObjectId) a unique id for
     #   the file to be use in lieu of an automatically generated one.
     # @option opts [String] :content_type ('binary/octet-stream') If no content type is specified,
     #   the content type will may be inferred from the filename extension if the mime-types gem can be

lib/mongo/gridfs/grid_io.rb

@@ -47,7 +47,7 @@ module Mongo
     # @option opts [String] :fs_name the file system prefix.
     # @option opts [Integer] (262144) :chunk_size size of file chunks in bytes.
     # @option opts [Hash] :metadata ({}) any additional data to store with the file.
-    # @option opts [ObjectID] :_id (ObjectID) a unique id for
+    # @option opts [ObjectId] :_id (ObjectId) a unique id for
     #   the file to be use in lieu of an automatically generated one.
     # @option opts [String] :content_type ('binary/octet-stream') If no content type is specified,
     #   the content type will may be inferred from the filename extension if the mime-types gem can be
@@ -180,7 +180,7 @@ module Mongo
     # This method will be invoked automatically when
     # on GridIO#open is passed a block. Otherwise, it must be called manually.
     #
-    # @return [BSON::ObjectID]
+    # @return [BSON::ObjectId]
     def close
       if @mode[0] == ?w
         if @current_chunk['n'].zero? && @chunk_position.zero?
@@ -200,7 +200,7 @@ module Mongo
 
     def create_chunk(n)
       chunk = BSON::OrderedHash.new
-      chunk['_id']      = BSON::ObjectID.new
+      chunk['_id']      = BSON::ObjectId.new
       chunk['n']        = n
       chunk['files_id'] = @files_id
       chunk['data']     = ''
@@ -308,7 +308,7 @@ module Mongo
 
     # Initialize the class for writing a file.
     def init_write(opts)
-      @files_id      = opts.delete(:_id) || BSON::ObjectID.new
+      @files_id      = opts.delete(:_id) || BSON::ObjectId.new
       @content_type  = opts.delete(:content_type) || (defined? MIME) && get_content_type || DEFAULT_CONTENT_TYPE
       @chunk_size    = opts.delete(:chunk_size) || DEFAULT_CHUNK_SIZE
       @metadata      = opts.delete(:metadata) if opts[:metadata]

test/collection_test.rb

@@ -12,9 +12,9 @@ class TestCollection < Test::Unit::TestCase
 
   def test_optional_pk_factory
     @coll_default_pk = @@db.collection('stuff')
-    assert_equal BSON::ObjectID, @coll_default_pk.pk_factory
+    assert_equal BSON::ObjectId, @coll_default_pk.pk_factory
     @coll_default_pk = @@db.create_collection('more-stuff')
-    assert_equal BSON::ObjectID, @coll_default_pk.pk_factory
+    assert_equal BSON::ObjectId, @coll_default_pk.pk_factory
 
     # Create a db with a pk_factory.
     @db = Connection.new(ENV['MONGO_RUBY_DRIVER_HOST'] || 'localhost',
@@ -334,7 +334,7 @@ class TestCollection < Test::Unit::TestCase
 
     assert_equal nil, @@test.find_one("hello" => "foo")
     assert_equal nil, @@test.find_one(BSON::OrderedHash["hello", "foo"])
-    assert_equal nil, @@test.find_one(ObjectID.new)
+    assert_equal nil, @@test.find_one(ObjectId.new)
 
     assert_raise TypeError do
       @@test.find_one(6)

test/db_api_test.rb

@@ -29,8 +29,8 @@ class DBAPITest < Test::Unit::TestCase
   end
 
   def test_insert
-    assert_kind_of BSON::ObjectID, @@coll.insert('a' => 2)
+    assert_kind_of BSON::ObjectId, @@coll.insert('a' => 2)
-    assert_kind_of BSON::ObjectID, @@coll.insert('b' => 3)
+    assert_kind_of BSON::ObjectId, @@coll.insert('b' => 3)
 
     assert_equal 3, @@coll.count
     docs = @@coll.find().to_a
@@ -62,7 +62,7 @@ class DBAPITest < Test::Unit::TestCase
     ids = @@coll.insert([{'a' => 2}, {'b' => 3}])
 
     ids.each do |i|
-      assert_kind_of BSON::ObjectID, i
+      assert_kind_of BSON::ObjectId, i
     end
 
     assert_equal 3, @@coll.count
@@ -575,7 +575,7 @@ class DBAPITest < Test::Unit::TestCase
   def test_deref
     @@coll.remove
 
-    assert_equal nil, @@db.dereference(DBRef.new("test", ObjectID.new))
+    assert_equal nil, @@db.dereference(DBRef.new("test", ObjectId.new))
     @@coll.insert({"x" => "hello"})
     key = @@coll.find_one()["_id"]
     assert_equal "hello", @@db.dereference(DBRef.new("test", key))["x"]
@@ -596,7 +596,7 @@ class DBAPITest < Test::Unit::TestCase
     a = {"hello" => "world"}
 
     id = @@coll.save(a)
-    assert_kind_of ObjectID, id
+    assert_kind_of ObjectId, id
     assert_equal 1, @@coll.count
 
     assert_equal id, @@coll.save(a)
@@ -625,14 +625,14 @@ class DBAPITest < Test::Unit::TestCase
 
     @@coll.save("hello" => "mike")
     id = @@coll.save("hello" => "world")
-    assert_kind_of ObjectID, id
+    assert_kind_of ObjectId, id
 
     assert_equal "world", @@coll.find_one(:_id => id)["hello"]
     @@coll.find(:_id => id).to_a.each do |doc|
       assert_equal "world", doc["hello"]
     end
 
-    id = ObjectID.from_string(id.to_s)
+    id = ObjectId.from_string(id.to_s)
     assert_equal "world", @@coll.find_one(:_id => id)["hello"]
   end
 

test/db_test.rb

@@ -6,7 +6,7 @@ require 'logger'
 
 class TestPKFactory
   def create_pk(row)
-    row['_id'] ||= BSON::ObjectID.new
+    row['_id'] ||= BSON::ObjectId.new
     row
   end
 end
@@ -102,7 +102,7 @@ class DBTest < Test::Unit::TestCase
     assert_not_nil oid
     assert_equal insert_id, oid
 
-    oid = BSON::ObjectID.new
+    oid = BSON::ObjectId.new
     data = {'_id' => oid, 'name' => 'Barney', 'age' => 41}
     coll.insert(data)
     row = coll.find_one({'name' => data['name']})

test/mongo_bson/object_id_test.rb

@@ -0,0 +1,132 @@
+require 'test/test_helper'
+require 'rubygems'
+require 'json'
+
+class ObjectIdTest < Test::Unit::TestCase
+
+  include Mongo
+  include BSON
+
+  def setup
+    @o = ObjectId.new
+  end
+
+  def test_hashcode
+    assert_equal @o.instance_variable_get(:@data).hash, @o.hash
+  end
+
+  def test_array_uniq_for_equilavent_ids
+    a = ObjectId.new('123')
+    b = ObjectId.new('123')
+    assert_equal a, b
+    assert_equal 1, [a, b].uniq.size
+  end
+
+  def test_create_pk_method
+    doc = {:name => 'Mongo'}
+    doc = ObjectId.create_pk(doc)
+    assert doc[:_id]
+
+    doc = {:name => 'Mongo', :_id => '12345'}
+    doc = ObjectId.create_pk(doc)
+    assert_equal '12345', doc[:_id]
+  end
+
+  def test_different
+    a = ObjectId.new
+    b = ObjectId.new
+    assert_not_equal a.to_a, b.to_a
+    assert_not_equal a, b
+  end
+
+  def test_eql?
+    o2 = ObjectId.new(@o.to_a)
+    assert_equal @o, o2
+  end
+
+  def test_to_s
+    s = @o.to_s
+    assert_equal 24, s.length
+    s =~ /^([0-9a-f]+)$/
+    assert_equal 24, $1.length
+  end
+
+  def test_method
+    assert_equal ObjectId.from_string(@o.to_s), BSON::ObjectId(@o.to_s)
+  end
+
+  def test_inspect
+    assert_equal "BSON::ObjectId('#{@o.to_s}')", @o.inspect
+  end
+
+  def test_save_and_restore
+    host = ENV['MONGO_RUBY_DRIVER_HOST'] || 'localhost'
+    port = ENV['MONGO_RUBY_DRIVER_PORT'] || Connection::DEFAULT_PORT
+    db = Connection.new(host, port).db(MONGO_TEST_DB)
+    coll = db.collection('test')
+
+    coll.remove
+    coll << {'a' => 1, '_id' => @o}
+
+    row = coll.find().collect.first
+    assert_equal 1, row['a']
+    assert_equal @o, row['_id']
+  end
+
+  def test_from_string
+    hex_str = @o.to_s
+    o2 = ObjectId.from_string(hex_str)
+    assert_equal hex_str, o2.to_s
+    assert_equal @o, o2
+    assert_equal @o.to_s, o2.to_s
+  end
+
+  def test_illegal_from_string
+    assert_raise InvalidObjectId do 
+      ObjectId.from_string("")
+    end
+  end
+
+  def test_legal
+    assert !ObjectId.legal?(nil)
+    assert !ObjectId.legal?("fred")
+    assert !ObjectId.legal?("0000")
+    assert !ObjectId.legal?('000102030405060708090A0')
+    assert ObjectId.legal?('000102030405060708090A0B')
+    assert ObjectId.legal?('abcdefABCDEF123456789012')
+    assert !ObjectId.legal?('abcdefABCDEF12345678901x')
+  end
+
+  def test_from_string_leading_zeroes
+    hex_str = '000000000000000000000000'
+    o = ObjectId.from_string(hex_str)
+    assert_equal hex_str, o.to_s
+  end
+
+  def test_byte_order
+    hex_str = '000102030405060708090A0B'
+    o = ObjectId.from_string(hex_str)
+    assert_equal [0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b], o.to_a
+  end
+
+  def test_generation_time
+    time = Time.now
+    id   = ObjectId.new
+    generated_time = id.generation_time
+
+    assert_in_delta time.to_i, generated_time.to_i, 2
+    assert_equal "UTC", generated_time.zone
+  end
+
+  def test_from_time
+    time = Time.now.utc
+    id   = ObjectId.from_time(time)
+
+    assert_equal time.to_i, id.generation_time.to_i
+  end
+
+  def test_json
+    id = ObjectId.new
+    assert_equal "{\"$oid\": \"#{id}\"}", id.to_json
+  end
+end