require 'mongo_mapper'
require 'spec'
require 'extlib'

MongoMapper.connection = Mongo::Connection.new('localhost')
MongoMapper.database = 'tmp'

class Bar
  include MongoMapper::EmbeddedDocument
  key :title, String
end

class Foo
  include MongoMapper::Document
  key :name, String
  key :alpha, Hash
  key :group, Array
  many :bars
  key :name_updated, Time
  key :alpha_updated, Time
  key :group_updated, Time
  key :bars_updated, Time

  def before_save
    self.name_updated  = Time.now if self.name_changed?
    self.alpha_updated = Time.now if self.alpha_changed?
    self.group_updated = Time.now if self.group_changed?
    # bars_changed? is undefined
    # self.bars_updated  = Time.now if self.bars_changed?
  end
end

describe "test changed? behaviour" do

  before :each do
    Foo.collection.clear
  end

  it "should indicate string changed" do
    foo = Foo.create
    foo.name_updated.should be_nil
    foo.name = 'one'
    foo.changed.include?('name').should be_true
    foo.save
    foo.name_updated.should_not be_nil
  end

  it "should indicate a hash was reassigned" do
    foo = Foo.create
    foo.alpha_updated.should be_nil
    foo.alpha = {:a => 1}
    foo.changed.include?('alpha').should be_true
    foo.save
    foo.alpha_updated.should_not be_nil
  end

  it "should indicate hash changed" do
    foo = Foo.create
    foo.alpha_updated.should be_nil
    foo.alpha['a'] = 1
    foo.changed.include?('alpha').should be_true  #fails as only the hash contents changed, not the hash object
    foo.save
    foo.alpha_updated.should_not be_nil  #fails
  end

  it "should indicate an array was reassigned" do
    foo = Foo.create
    foo.group_updated.should be_nil
    foo.group = %w(one two three)
    foo.changed.include?('group').should be_true
    foo.save
    foo.group_updated.should_not be_nil
  end

  it "should indicate array changed" do
    foo = Foo.create
    foo.group_updated.should be_nil
    foo.group << 'one'
    foo.group << 'two'
    foo.group << 'three'
    foo.changed.include?('group').should be_true  #fails as only the array contents changed, not the array object
    foo.save
    foo.group_updated.should_not be_nil  #fails
  end

  it "should indicate embedded document changed" do
    foo = Foo.create
    foo.bars_updated.should be_nil
    foo.bars << Bar.new(:title => 'boss')
    foo.save
    foo.bars_updated.should_not be_nil  #fails
  end

end

__END__


royw-macbook:tmp royw$ spec changed.rb
..F.FF

1)
'test changed? behaviour should indicate hash changed' FAILED
expected true, got false
./changed.rb:62:

2)
'test changed? behaviour should indicate array changed' FAILED
expected true, got false
./changed.rb:82:

3)
'test changed? behaviour should indicate embedded document changed' FAILED
expected not nil, got nil
./changed.rb:92:

Finished in 0.027555 seconds

6 examples, 3 failures