test_weakmap.rb: fix test

* test/ruby/test_weakmap.rb (test_include?): isolate weak
  referenced object.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44174 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 5 deletions

diff --git a/test/ruby/test_weakmap.rb b/test/ruby/test_weakmap.rb
index 053ad88cfa..bc88ab0dd0 100644
--- a/test/ruby/test_weakmap.rb
+++ b/test/ruby/test_weakmap.rb
@@ -30,12 +30,13 @@ class TestWeakMap < Test::Unit::TestCase
 
   def test_include?
     m = __callee__[/test_(.*)/, 1]
-    x = Object.new
     k = "foo"
-    @wm[k] = x
-    assert_send([@wm, m, k])
-    assert_not_send([@wm, m, "FOO".downcase])
-    x = nil
+    Object.new do |x|
+      @wm[k] = x
+      assert_send([@wm, m, k])
+      assert_not_send([@wm, m, "FOO".downcase])
+      x = nil
+    end
     GC.start
     assert_not_send([@wm, m, k])
   end