A generic rails .autotest mappings file

.autotest

egin
  require 'autotest/fsevent' 
rescue LoadError
end

Autotest.add_hook :initialize do |at|

  at.add_mapping(/^spec\/**\/*_spec\.rb$/, true){ |filename, _|  
    filename
  }

  at.add_mapping(/^spec\/support\/.*\.rb$/, true) { |_, _|
    Dir['spec/**/*_spec.rb']
  }

  at.add_mapping(/^app\/(.*)\.rb$/, true) { |_, m|
    Dir["spec/#{m[1]}_spec.rb"]
  }

  nil
end