bpo-36454: Fix test_time.test_monotonic() (GH-12929)
Change test_time.test_monotonic() to test only the lower bound of elapsed time
after a sleep command rather than the upper bound. This prevents unnecessary
test failures on slow buildbots. Patch by Victor Stinner.
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
index 3039189..42799b2 100644
--- a/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@ -470,8 +470,9 @@
t2 = time.monotonic()
dt = t2 - t1
self.assertGreater(t2, t1)
- # Issue #20101: On some Windows machines, dt may be slightly low
- self.assertTrue(0.45 <= dt <= 1.0, dt)
+ # bpo-20101: tolerate a difference of 50 ms because of bad timer
+ # resolution on Windows
+ self.assertTrue(0.450 <= dt)
# monotonic() is a monotonic but non adjustable clock
info = time.get_clock_info('monotonic')