[3.12] gh-105716: Fix "Refleak" Failures in test_interpreters

Lib/test/test_interpreters.py

@@ -68,6 +68,20 @@ def run():
 
 class TestBase(unittest.TestCase):
 
+ def os_pipe(self):
+ r, w = os.pipe()
+ def cleanup():
+ try:
+ os.close(w)
+ except Exception:
+ pass
+ try:
+ os.close(r)
+ except Exception:
+ pass
+ self.addCleanup(cleanup)
+ return r, w
+
  def tearDown(self):
  clean_up_interpreters()
 
@@ -262,7 +276,7 @@ def test_subinterpreter(self):
  self.assertFalse(interp.is_running())
 
  def test_finished(self):
- r, w = os.pipe()
+ r, w = self.os_pipe()
  interp = interpreters.create()
  interp.run(f"""if True:
  import os
@@ -299,8 +313,8 @@ def test_bad_id(self):
  interp.is_running()
 
  def test_with_only_background_threads(self):
- r_interp, w_interp = os.pipe()
- r_thread, w_thread = os.pipe()
+ r_interp, w_interp = self.os_pipe()
+ r_thread, w_thread = self.os_pipe()
 
  DONE = b'D'
  FINISHED = b'F'
@@ -425,8 +439,8 @@ def test_still_running(self):
  self.assertTrue(interp.is_running())
 
  def test_subthreads_still_running(self):
- r_interp, w_interp = os.pipe()
- r_thread, w_thread = os.pipe()
+ r_interp, w_interp = self.os_pipe()
+ r_thread, w_thread = self.os_pipe()
 
  FINISHED = b'F'
 
@@ -532,8 +546,8 @@ def test_bytes_for_script(self):
  interp.run(b'print("spam")')
 
  def test_with_background_threads_still_running(self):
- r_interp, w_interp = os.pipe()
- r_thread, w_thread = os.pipe()
+ r_interp, w_interp = self.os_pipe()
+ r_thread, w_thread = self.os_pipe()
 
  RAN = b'R'
  DONE = b'D'