require File.expand_path("../test_helper", __FILE__)
require 'rubygems'
require 'json'

class ObjectIdTest < Test::Unit::TestCase

  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_to_s2
    @o = ObjectId.new([76, 244, 52, 174, 44, 84, 121, 76, 88, 0, 0, 3])
    s = '4cf434ae2c54794c58000003'
    assert_equal @o.to_s, s
  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_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 id.to_a[4, 8].all? {|byte| byte == 0 }
    assert_equal time.to_i, id.generation_time.to_i
  end

  def test_from_time_unique
    time = Time.now.utc
    id   = ObjectId.from_time(time, :unique => true)

    assert_equal id.to_a[4, 3], ObjectId.machine_id.unpack("C3")
    assert_equal time.to_i, id.generation_time.to_i

    id2 = ObjectId.new(nil, time)
    assert_equal time.to_i, id2.generation_time.to_i
  end

  def test_json
    id = ObjectId.new
    assert_equal "{\"$oid\": \"#{id}\"}", id.to_json
  end

  def test_as_json
    id = ObjectId.new
    assert_equal({"$oid" => id.to_s}, id.as_json)
  end

  def test_object_id_array_flatten
    id = ObjectId.new
    assert_equal [ id ], [[ id ]].flatten
  end

  def test_object_id_array_flatten_bang
    id = ObjectId.new
    assert_equal [ id ], [[ id ]].flatten!
  end
end