fix parallel test issues with rake test [Bug ruby#9211]

tmm1 · tmm1 · commit 095dcd625875 · 2014-01-06T20:33:14.000-08:00
diff --git a/test/rake/test_rake_functional.rb b/test/rake/test_rake_functional.rb
@@ -414,7 +414,7 @@ def test_file_list_is_requirable_separately
   end
 
   def can_detect_signals?
-    system "ruby -e 'Process.kill \"TERM\", $$'"
+    system RUBY, '-e', 'Process.kill "TERM", $$'
     status = $?
     if @verbose
       puts "    SIG status = #{$?.inspect}"
