gistfile1.rb

=begin
  This is my control script.
  
  DataMapper by itself doesn't seem to explode when using BigDecimal. 

umbra:dm-specs ted$ ruby scratch_pad/big_dec.rb 
Create
Find
Access Value
umbra:dm-specs ted$ 

=end

require 'rubygems'
require 'dm-core'

class BigDec
  include DataMapper::Resource
  property :id, Serial
  property :value, BigDecimal
end

DataMapper.setup(:default, :adapter=>:in_memory) 
puts "Create"
b = BigDec.create(:value => "9E69999999")
puts "Find"
b = BigDec.first
puts "Access Value"
b.value

gistfile2.rb

=begin

umbra:dm-specs ted$ spec specs/spec_big_decimal_bug.rb -f s -c

BigDecimal bug
Create
Illegal instruction
umbra:dm-specs ted$

=end

here = File.dirname(__FILE__)
require File.join(here, 'spec_helper')

class BigDec
  include DataMapper::Resource
  property :id, Serial
  property :value, BigDecimal
end

describe "BigDecimal bug" do
  it "should throw an error, rather than exploding in memory" do
    DataMapper.setup(:default, :adapter=>:in_memory) 
    puts "Create"
    b = BigDec.create(:value => "9E69999999")
    puts "Find"
    b = BigDec.first
    puts "Access Value"
    b.value.should raise_error
  end
end

spec_helper.rb

require 'rubygems'
require 'spec'
require 'extlib'
require 'dm-core'
require 'dm-validations'

here = File.dirname(__FILE__)

#DataMapper::Logger.new(STDOUT, :debug)
DataMapper.setup(:default, "mysql://localhost/dm_specs")
#DataMapper.setup(:default, "sqlite3:./dm_specs.db")
#DataMapper.setup(:default, "postgres://localhost/dm_specs")