basic setup

README

@@ -0,0 +1,22 @@
+This will set you up with basic automated testing for code retreat
+practice using Conway's Game of Life. It will create a "code_retreat"
+gemset, install the needed gems, and set the gemset as your default
+whenever you enter the working directory.
+
+Set it up by rvm use-ing your chosen ruby version, then running this
+on the command line:
+
+    ruby setup.rb
+
+When you want to start over, reset like this:
+
+    ruby reset.rb
+
+This will remove all your code changes.
+
+If you have the screencapture application installed, this will
+take a screenshot every time you save your file, so you can look
+back fondly on your work :)  These will be saved in the "screencaptures"
+directory as png files you can later turn into a slideshow if you want.
+
+screenshots are timestamped, and not erased when you reset.

life.example

@@ -0,0 +1,17 @@
+#!/usr/bin/ruby
+
+require 'test/unit'
+require 'rubygems'
+require 'redgreen'
+require 'fsevent'
+require 'dust'
+
+# code goes here
+
+
+# tests go here
+class LifeTest < Test::Unit::TestCase
+  test "should do something" do
+    assert true
+  end
+end

life.watchr

@@ -0,0 +1,13 @@
+# get screencapture command, if available
+screencapture = File.exists?('.screencapture') ?
+  File.open('.screencapture', 'r'){|f| f.read} :
+  nil
+
+watch('life.rb') do |md|
+  system './life.rb'
+
+  if screencapture
+    timestamp = Time.now.to_s.split(/\s+/)[1].gsub(/:/, '')
+    system "#{screencapture} -x screencaptures/#{timestamp}.png"
+  end
+end

reset.rb

@@ -0,0 +1,10 @@
+#!/usr/bin/ruby
+
+def run command
+  puts command
+  puts `#{command}`
+end
+
+# reset life.rb
+run "cp life.example life.rb"
+

setup.rb

@@ -0,0 +1,61 @@
+#!/usr/bin/ruby
+
+def run command
+  puts command
+  puts `#{command}`
+end
+
+# require ruby version as a parameter. otherwise, print usage
+ruby_version = `rvm-prompt`.chomp
+
+if ruby_version == ''
+  puts <<USAGE
+  You need to be in rvm first, then re-run this command.
+USAGE
+
+  exit 0
+else
+  ruby_version = ruby_version.split(/@/).first
+end
+
+# gemset command string
+gemset_command = "rvm use #{ruby_version}@code_retreat"
+
+# setup gemset
+run "rvm use #{ruby_version} && rvm gemset create code_retreat && #{gemset_command}"
+
+# automatically use this gemset when we enter this directory
+File.open('.rvmrc', 'w'){|f| f.write gemset_command}
+
+# download the required gems
+['dust', 'redgreen', 'ruby-fsevent', 'watchr'].each do |gem_name|
+  run "gem install #{gem_name} --no-rdoc --no-ri"
+end
+
+# reset life.rb
+run "cp life.example life.rb"
+
+# try to get screencapture app
+screencapture = `whereis screencapture`.chomp
+screencapture_message = ""
+unless screencapture == ""
+  File.open('.screencapture', 'w'){|f| f.write screencapture}
+  system "mkdir screencaptures"
+
+  screencapture_message = "Every save will take a snapshot of your progress,\n  which you can find in the screencaptures directory!\n"
+end
+
+# print instructions
+puts <<INSTRUCTIONS
+--------------------
+  Great!  Now run watcher like so:
+
+      watchr life.watchr
+    
+  And start adding your code to life.rb in your favorite editor.
+  Your tests will run automatically every time you save the file.
+
+  #{screencapture_message}
+  Enjoy :)
+--------------------
+INSTRUCTIONS