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tests/extmod/utime_time_ns.py: Relax bounds on time_ns measurement. 

Some devices have lower precision than 1ms for time_ns() (eg PYBv1.x has
3.9ms resolution of the RTC) so make the test more lenient for them.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2021-02-01 18:44:28 +11:00
parent b8f5f5cd85
commit 35a6f6231e
1 changed files with 3 additions and 3 deletions
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6
tests/extmod/utime_time_ns.py
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@ -11,14 +11,14 @@ except (ImportError, AttributeError):
t0 = utime.time_ns()
utime.sleep_us(1000)
utime.sleep_us(5000)
t1 = utime.time_ns()
# Check that time_ns increases.
print(t0 < t1)
# Check that time_ns counts correctly, but be very lenient with the upper bound (50ms).
if 950000 < t1 - t0 < 50000000:
# Check that time_ns counts correctly, but be very lenient with the bounds (2ms to 50ms).
if 2000000 < t1 - t0 < 50000000:
print(True)
else:
print(t0, t1, t1 - t0)