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, 4 insertions, 2 deletions

diff --git a/test/-ext-/thread_fd_close/test_thread_fd_close.rb b/test/-ext-/thread_fd_close/test_thread_fd_close.rb
index c83b06d672..e6c3895da7 100644
--- a/test/-ext-/thread_fd_close/test_thread_fd_close.rb
+++ b/test/-ext-/thread_fd_close/test_thread_fd_close.rb
@@ -9,7 +9,9 @@ class TestThreadFdClose < Test::Unit::TestCase
     IO.pipe do |r, w|
       th = Thread.new do
         begin
-          r.read(4)
+          assert_raise(IOError) {
+            r.read(4)
+          }
         ensure
           w.syswrite('done')
         end
@@ -17,7 +19,7 @@ class TestThreadFdClose < Test::Unit::TestCase
       Thread.pass until th.stop?
       IO.thread_fd_close(r.fileno)
       assert_equal 'done', r.read(4)
-      assert_raise(IOError) { th.join }
+      th.join
     end
   end
 end