gistfile1.txt

require 'rubygems'
require 'active_support'

APPD = "#{File.dirname(__FILE__)}/.."
MODD = "#{File.dirname(__FILE__)}/../spec/models"
FACTD = "#{File.dirname(__FILE__)}/../spec/factories"

class SpecGenerator
  ASSOCIATION_CONVERSION_TABLE = [
    ["has_many", "have_many"],
    ["has_one", "have_one"],
    ["belongs_to", "belong_to"]
  ]
  
  def run
    model_sources.each { |file| generate_specs_for_model(file) }
  end

private
  
  def model_sources
    Dir["#{APPD}/app/models/*.rb"]
  end
  
  def generate_specs_for_model(file)
    spec_file_name = "#{MODD}/#{File.basename(file, '.rb')}_spec.rb"
    puts "#{spec_file_name} already exists (skipping)" and return if File.exists?(spec_file_name)    
    File.open(spec_file_name, "w+") do |f|
      klass = File.basename(file, '.rb').classify
      f.puts "require File.expand_path(File.dirname(__FILE__) + ‘/../spec_helper’)"
      f.puts "describe #{klass} do"
      
      validations_for_conversion(file).each { |v| f.puts "\t#{v}\n" }
      
      f.puts "end"
    end
    
  end
  
  def validations_for_conversion(file)
    validations = []
    File.open(file, "r") do |f|
      while (line = f.gets)
        validations << get_association_values(line) if line_has_association?(line)
      end  
    end
    
    validations
  end
  
  def line_has_association?(line)
    found = false
    ASSOCIATION_CONVERSION_TABLE.each { |key| found = true if line.match(key[0])   }
    found
  end
  
  def get_association_values(line)
    association_code = ""
    ASSOCIATION_CONVERSION_TABLE.each do |key|
      matches = line.scan(/(#{key[0]}) (\:\w+)/).flatten
      association_code = "it { should #{key[1]}( #{matches[1]} ) }" if matches.size > 0
    end
    association_code
  end
  
end

sg = SpecGenerator.new
sg.run