Pick ruby/ruby changes for test/fiddle/test_function.rb (#141)

ruby/ruby#11048 (comment)

---------

Co-authored-by: Yusuke Endoh <mame@ruby-lang.org>

Author: hsbt

Gemfile

@@ -5,3 +5,4 @@ gemspec
 gem "rake"
 gem "rake-compiler"
 gem "test-unit", ">= 3.4.5"
+gem "test-unit-ruby-core"

test/fiddle/test_function.rb

@@ -167,6 +167,8 @@ def test_function_as_method
     end
 
     def test_nogvl_poll
+      require "envutil" unless defined?(EnvUtil)
+
       # XXX hack to quiet down CI errors on EINTR from r64353
       # [ruby-core:88360] [Misc #14937]
       # Making pipes (and sockets) non-blocking by default would allow
@@ -180,13 +182,13 @@ def test_nogvl_poll
       end
       f = Function.new(poll, [TYPE_VOIDP, TYPE_INT, TYPE_INT], TYPE_INT)
 
-      msec = 200
+      msec = EnvUtil.apply_timeout_scale(1000)
       t0 = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
       th = Thread.new { f.call(nil, 0, msec) }
       n1 = f.call(nil, 0, msec)
       n2 = th.value
       t1 = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
-      assert_in_delta(msec, t1 - t0, 180, 'slept amount of time')
+      assert_in_delta(msec, t1 - t0, EnvUtil.apply_timeout_scale(500), 'slept amount of time')
       assert_equal(0, n1, perror("poll(2) in main-thread"))
       assert_equal(0, n2, perror("poll(2) in sub-thread"))
     end