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| author | Victor Stinner <victor.stinner@gmail.com> | 2013-11-22 23:15:27 (GMT) |
|---|---|---|
| committer | Victor Stinner <victor.stinner@gmail.com> | 2013-11-22 23:15:27 (GMT) |
| commit | 6c86181cd1581f89d49fa0e1ccda20a0005d8283 (patch) | |
| tree | cf2e5a079359cdad27cb828700147816b1b5c8f1 /Lib/test/test_time.py | |
| parent | 0f57564cac8235961c9e64774dfb4069963c35de (diff) | |
| download | cpython-6c86181cd1581f89d49fa0e1ccda20a0005d8283.zip cpython-6c86181cd1581f89d49fa0e1ccda20a0005d8283.tar.gz cpython-6c86181cd1581f89d49fa0e1ccda20a0005d8283.tar.bz2 | |
Issue #19715: Ensure that consecutive calls to monotonic() are monotonic
Diffstat (limited to 'Lib/test/test_time.py')
| -rw-r--r-- | Lib/test/test_time.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py index faf9779..f3643b6 100644 --- a/Lib/test/test_time.py +++ b/Lib/test/test_time.py @@ -367,6 +367,14 @@ class TimeTestCase(unittest.TestCase): @unittest.skipUnless(hasattr(time, 'monotonic'), 'need time.monotonic') def test_monotonic(self): + # monotonic() should not go backward + times = [time.monotonic() for n in range(100)] + t1 = times[0] + for t2 in times[1:]: + self.assertGreaterEqual(t2, t1, "times=%s" % times) + t1 = t2 + + # monotonic() includes time elapsed during a sleep t1 = time.monotonic() time.sleep(0.5) t2 = time.monotonic() @@ -374,6 +382,7 @@ class TimeTestCase(unittest.TestCase): self.assertGreater(t2, t1) self.assertAlmostEqual(dt, 0.5, delta=0.2) + # monotonic() is a monotonic but non adjustable clock info = time.get_clock_info('monotonic') self.assertTrue(info.monotonic) self.assertFalse(info.adjustable) |