Hello folks,
Tonight I tried out some of that good old extreme programming TDD stuff
with mixed results.
I was initially surprised how much it helped get things started but
I noticed after a while that it kind of petered out because I wasn’t
sure 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 suggestions
on 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 there
is 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”
end
end
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
end
end
me = Tracker.new(maze)
me.get_it!
Basically,