gistfile1.rb

require 'mongo_mapper'
require 'spec'

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

class Test
  include MongoMapper::Document
  key :first, Integer
  key :second, Integer
end
 
describe 'Wishful Thinking' do
  before :all do
    # need to add the following server-side function:
    javascript = "db.system.js.insert( { _id : 'combine', value : function( a ) " + 
                 "{ return a.first + a.second; } } )"
    MongoMapper.database.eval(Mongo::Code.new(javascript))
  end
 
  before :each do
    Test.collection.clear
    Test.create(:first => 10, :second => 15)
    Test.create(:first => 17, :second => 23)
  end
 
  it "should run server-side command" do
    Test.all(:conditions => {"$where" => "combine(this) < 20"}).size.should == 1
  end
end

__END__

royw-macbook:tmp royw$ spec where_functions.rb 
F

1)
RuntimeError in 'Wishful Thinking should run server-side command'
error on invocation of $where function:
JS Error: ReferenceError: combine is not defined nofile_a:0
./where_functions.rb:28:

Finished in 0.058246 seconds

1 example, 1 failure