Fix test-all tests to avoid creating report_on_exception warnings

* The warnings are shown by Thread.report_on_exception defaulting to
  true. [Feature #14143] [ruby-core:83979]
* Improves tests by narrowing down the scope where an exception
  is expected.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61188 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 5 deletions

diff --git a/test/fiddle/test_func.rb b/test/fiddle/test_func.rb
index 8517965223..8c35833a32 100644
--- a/test/fiddle/test_func.rb
+++ b/test/fiddle/test_func.rb
@@ -13,12 +13,12 @@ module Fiddle
 
     def test_syscall_with_tainted_string
       f = Function.new(@libc['system'], [TYPE_VOIDP], TYPE_INT)
-      assert_raise(SecurityError) do
-        Thread.new {
-          $SAFE = 1
+      Thread.new {
+        $SAFE = 1
+        assert_raise(SecurityError) do
           f.call("uname -rs".dup.taint)
-        }.join
-      end
+        end
+      }.join
     end
 
     def test_sinf