Testing javascript regular expressions using a ruby test suite

test_js_regex.rb

require 'therubyracer'
js = V8::Context.new

matches = (<<-___).split("\n---\n")
123
---
abc
___

pattern = DATA.reduce("") { |str, line|
  str << line.partition('#')[0].strip
}

puts "Testing: /#{pattern}/", "---"

matches.each do |match|
  puts match, js.eval(<<-___)
  /#{pattern}/.test(#{match.inspect});
  ___
end

__END__
\d+  # example expression