merge revision(s) 5d1702e01a36e11b183fe29ce10780a9b1a41cf0: [Backport #20413]

	Enumerator should use a non-blocking fiber, change `rb_fiber_new` to be non-blocking by default. (#10481)

1 files changed, 8 insertions, 0 deletions

diff --git a/test/fiber/test_enumerator.rb b/test/fiber/test_enumerator.rb
index 40f7d01725..e9410f925c 100644
--- a/test/fiber/test_enumerator.rb
+++ b/test/fiber/test_enumerator.rb
@@ -42,4 +42,12 @@ class TestFiberEnumerator < Test::Unit::TestCase
     assert_predicate(i, :closed?)
     assert_predicate(o, :closed?)
   end
+
+  def enumerator_fiber_is_nonblocking
+    enumerator = Enumerator.new do |yielder|
+      yielder << Fiber.current.blocking?
+    end
+
+    assert_equal(false, enumerator.next)
+  end
 end