watchr script to automate tests

specs.watchr

#-*- ruby -*-

#
# MAKE SURE YOU CHANGE THE YOUR TESTS DIR
# AND YOUR LIB DIR
#

# Run me with:
#   $ watchr specs.watchr

# --------------------------------------------------
# Rules
# --------------------------------------------------
watch('^CHANGE_TO_YOUR_TESTS_DIR/.*_spec\.rb')          { |m| ruby  m[0] }
watch('^CHANGE_TO_YOUR_LIB_DIR/(.*)\.rb')               { |m| ruby "CHANGE_TO_YOUR_TESTS_DIR/#{m[1]}_spec.rb" }
watch('^CHANGE_TO_YOUR_TESTS_DIR/minitest_helper\.rb')  { ruby tests }

# --------------------------------------------------
# Signal Handling
# --------------------------------------------------
Signal.trap('QUIT') { ruby tests  } # Ctrl-\
Signal.trap('INT' ) { abort("\n") } # Ctrl-C

# --------------------------------------------------
# Helpers
# --------------------------------------------------
def ruby(*paths)
  run "ruby #{gem_opt} -I.:CHANGE_TO_YOUR_LIB_DIR:.:CHANGE_TO_YOUR_TESTS_DIR -e'%w( #{paths.flatten.join(' ')} ).each {|p| require p }'"
end

def tests
  Dir['CHANGE_TO_YOUR_TESTS_DIR/**/*_spec.rb'] - ['CHANGE_TO_YOUR_TESTS_DIR/ANY_HELPER_NAME.rb']
end

def run( cmd )
  puts   cmd
  system cmd
end

def gem_opt
  defined?(Gem) ? "-rubygems" : ""
end