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rails--rails/actionpack/test/testing_sandbox.rb

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module TestingSandbox
# This whole thing *could* be much simpler, but I don't think Tempfile,
# popen and others exist on all platforms (like Windows).
def execute_in_sandbox(code)
test_name = "#{File.dirname(__FILE__)}/test.#{$$}.rb"
res_name = "#{File.dirname(__FILE__)}/test.#{$$}.out"
File.open(test_name, "w+") do |file|
file.write(<<-CODE)
$:.unshift "../lib"
block = Proc.new do
#{code}
end
print block.call
CODE
end
system("ruby #{test_name} > #{res_name}") or raise "could not run test in sandbox"
File.read(res_name)
ensure
File.delete(test_name) rescue nil
File.delete(res_name) rescue nil
end
end