commit 3fa5eb357e0df9bb1a627bcb749c70c4e7b7b7c4
author Bernhard M. Wiedemann <githubbmw@lsmod.de> Thu Jan 09 23:00:40 2020
committer Alex Grönholm <alex.gronholm@nextday.fi> Thu Jan 09 23:00:40 2020
tree f2aa7f7cdc9b56775047f9154c32ba0f5a18ef4b
parent e8cd2a441804ffd3529b6ae342ad41983717668f

Made test_idle_thread_reuse more reliable (#92)

Depending on machine load or other unknown influences
on the Linux scheduler, this would often fail with

   File "test_futures.py", line 558, in test_idle_thread_reuse
     self.assertEqual(len(executor._threads), 1)
 AssertionError: 2 != 1

test_futures.py

diff --git a/test_futures.py b/test_futures.py
index c2ae2d0..5ee4e71 100644
--- a/test_futures.py
+++ b/test_futures.py
@@ -577,7 +577,9 @@
     def test_idle_thread_reuse(self):
         executor = self.executor_type()
         executor.submit(mul, 21, 2).result()
+        time.sleep(0.001)
         executor.submit(mul, 6, 7).result()
+        time.sleep(0.001)
         executor.submit(mul, 3, 14).result()
         self.assertEqual(len(executor._threads), 1)
         executor.shutdown(wait=True)