From: Daniel Berger <djberg96@...>
Date: 2007-06-22T00:44:37+09:00
Subject: Performing $SAFE checks with test-unit

Hi all,

Is there a way to perform $SAFE checks with test-unit? I tried this
with Ruby 1.8.6:

require 'test/unit'

class TC_Hash_Replace < Test::Unit::TestCase
   def setup
      $SAFE = 0
   end

   def test_replace_in_safe_mode
      $SAFE = 4
      assert_raise(SecurityError){ {1,2,3,4}.replace({'a', 'b'}) }
   end

   def teardown
      $SAFE = 0
   end
end

Running that causes this error:

/usr/local/lib/ruby/1.8/test/unit/testcase.rb:136:in `add_error':
Insecure: can't modify instance variable (SecurityError)
        from /usr/local/lib/ruby/1.8/test/unit/testcase.rb:91:in `run'
        from /usr/local/lib/ruby/1.8/test/unit/testsuite.rb:34:in
`run'
        from /usr/local/lib/ruby/1.8/test/unit/testsuite.rb:33:in
`each'
        from /usr/local/lib/ruby/1.8/test/unit/testsuite.rb:33:in
`run'
        from /usr/local/lib/ruby/1.8/test/unit/testsuite.rb:34:in
`run'
        from /usr/local/lib/ruby/1.8/test/unit/testsuite.rb:33:in
`each'
        from /usr/local/lib/ruby/1.8/test/unit/testsuite.rb:33:in
`run'
        from /usr/local/lib/ruby/1.8/test/unit/ui/
testrunnermediator.rb:46:in `run_suite'
        from /usr/local/lib/ruby/1.8/test/unit/ui/console/
testrunner.rb:67:in `start_mediator'
        from /usr/local/lib/ruby/1.8/test/unit/ui/console/
testrunner.rb:41:in `start'
        from /usr/local/lib/ruby/1.8/test/unit/ui/
testrunnerutilities.rb:29:in `run'
        from /usr/local/lib/ruby/1.8/test/unit/autorunner.rb:216:in
`run'
        from /usr/local/lib/ruby/1.8/test/unit/autorunner.rb:12:in
`run'
        from /usr/local/lib/ruby/1.8/test/unit.rb:278

If it's not possible, consider it a feature request. I've no idea how
to implement it, however. Perhaps run it in a Sandbox? Dunno.

I haven't tried rspec yet to see what it does.

Thanks,

Dan