From: Alex Combas <alex.combas@...>
Date: 2006-03-25T19:57:54+09:00
Subject: Newby Maze solution

Hello folks,Tonight I tried out some of that good old extreme programming TDD stuffwith mixed results.
I was initially surprised how much it helped get things started butI noticed after a while that it kind of petered out because I wasn'tsure just how to test the code that I was writing.
Naturally, you will say, I should have kept to writing tests first.Well the damage is done. So now I would like to ask for suggestionson how to write a test for this code so I can learn for next time.Also, if I have done anything really stupid in the code and thereis a more rubyish way to do this please feel free to set me strait.
Thank you very much!
Here is my test:
require 'test/unit'require 'Lab'class TestLab < Test::Unit::TestCase  def setup@maze = <<MAZE_STRING##########################s--###----#####-#####-#####-#---##-##--#-##-----####-#-#-#--##-##-##-###-##---#-#-#-###-##-##-##--##-#---#-#---#-##----##-###-#-#-#-#-#-#-##-#########-#-#-#-#-#---##--------######-###---###########-######-#####-###########-######------------------e##########################MAZE_STRING
    @t = Tracker.new(@maze)  end  def test_grid    assert_equal @maze[25].chr,"\n","uhoh"  end  def test_tracker    assert_equal @t.track(@maze,27),28,"doesnt track"    assert_equal @t.track(@maze,28),29,"doesnt track"  endend
And Now the Code:
class Tracker  def initialize(map)    @forest = map  end  def track(path,mark)    prey = '*-es'    if prey.index(path[mark+1])      mark+1    elsif prey.index(path[mark+26])      mark+26    elsif prey.index(path[mark-1])      mark-1    elsif prey.index(path[mark-26])      mark-26    end  end  def get_it!    for_teh_win = nil    @s = @forest.index('s')    until for_teh_win      @s = track(@forest,@s)      if @forest[@s].chr == 'e'        for_teh_win = "WOOT!"      else        @forest[@s] = '*'      end    end    puts @forest  endendme = Tracker.new(maze)me.get_it!
--Alex Combashttp://noodlejunkie.com/