Enable `Fiber.current` and `Fiber#alive?` call inside ractor

1 files changed, 22 insertions, 0 deletions

diff --git a/test/fiber/test_ractor.rb b/test/fiber/test_ractor.rb
new file mode 100644
index 0000000000..6d53b617d9
--- /dev/null
+++ b/test/fiber/test_ractor.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+require "test/unit"
+require "fiber"
+
+class TestFiberCurrentRactor < Test::Unit::TestCase
+  def setup
+    skip unless defined? Ractor
+  end
+
+  def test_ractor_shareable
+    assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      require "fiber"
+      r = Ractor.new do
+        Fiber.new do
+          Fiber.current.class
+        end.resume
+      end
+      assert_equal(Fiber, r.take)
+    end;
+  end
+end