test/io/wait/test_io_wait.rb (test_wait_eof): test return value

I wrote some code which relies on this nowadays, but Ruby <=2.2
and earlier behaved differently...

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52231 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/test/io/wait/test_io_wait.rb b/test/io/wait/test_io_wait.rb
index 48f6cf5c20..bef4731ae5 100644
--- a/test/io/wait/test_io_wait.rb
+++ b/test/io/wait/test_io_wait.rb
@@ -70,9 +70,11 @@ class TestIOWait < Test::Unit::TestCase
 
   def test_wait_eof
     th = Thread.new { sleep 0.01; @w.close }
+    ret = nil
     assert_nothing_raised(Timeout::Error) do
-      Timeout.timeout(0.1) {@r.wait}
+      Timeout.timeout(0.1) { ret = @r.wait }
     end
+    assert_equal @r, ret
   ensure
     th.join
   end