rtest.rb

#!/usr/bin/env ruby
 
# Runs Rails tests via command line.
#
#  * rtest unit - runs all unit tests
#  * rtest unit post - runs the unit test for the 'post' model
#  * rtest unit post comment foo - runs those tests, yep
#  * rtest functional - you guessed it!
#  * rtest integration - blows up your computer

case ARGV.size
when 0
  # run all of them
  exec("rake test")
when 1
  case ARGV[0]
  when 'unit', 'functional'
   exec("rake test:#{ARGV[0]}s")
  when 'integration'
   # The integration task is not plural.
   exec("rake test:integration")
  end
else
  # run a given set of tests
  here = Dir.pwd
  $: << File.join(here, 'lib')
  $: << File.join(here, 'test')

  test_type = ARGV.shift  
  test_files = case test_type
  when 'unit', 'integration'
    ARGV.map {|test_name| "test/#{test_type}/#{test_name}_test.rb" }
  when 'functional'
    ARGV.map {|test_name| "test/#{test_type}/#{test_name}_controller_test.rb" }
  end

  puts "Running tests: #{test_files.join(' ')}"
  test_files.each {|f| load f }
end