Re-do 61b5976 without indenting changes.

Author: thedarkone

lib/thread_safe/synchronized_delegator.rb

@@ -16,6 +16,14 @@
 # This class is currently being considered for inclusion into stdlib, via
 # https://bugs.ruby-lang.org/issues/8556
 class SynchronizedDelegator < SimpleDelegator
+  def setup
+    @old_abort = Thread.abort_on_exception
+    Thread.abort_on_exception = true
+  end
+
+  def teardown
+    Thread.abort_on_exception = @old_abort
+  end
 
   def initialize(obj)
     __setobj__(obj)

test/test_cache_loops.rb

@@ -5,7 +5,7 @@
 
 Thread.abort_on_exception = true
 
-class TestCacheTorture < Test::Unit::TestCase
+class TestCacheTorture < Test::Unit::TestCase # this is not run unless RUBY_VERSION =~ /1\.8/ || ENV['TRAVIS'] (see the end of the file)
   THREAD_COUNT  = 40
   KEY_COUNT     = (((2**13) - 2) * 0.75).to_i # get close to the doubling cliff
   LOW_KEY_COUNT = (((2**8 ) - 2) * 0.75).to_i # get close to the doubling cliff
@@ -449,4 +449,4 @@ def assert_count_up(result, cache, options, keys)
     assert_equal(sum(cache.values), sum(result))
     assert_equal(options[:key_count], cache.size)
   end
-end
+end unless RUBY_VERSION =~ /1\.8/ || ENV['TRAVIS']