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import time
from functools import partial
import pytest
def slow_warmup():
x = 0
for _ in range(1000):
x *= 1
@pytest.mark.benchmark(warmup=True, warmup_iterations=10**8, max_time=10)
def test_calibrate(benchmark):
benchmark(slow_warmup)
@pytest.mark.benchmark(warmup=True, warmup_iterations=10**8, max_time=10)
def test_calibrate_fast(benchmark):
benchmark(lambda: [int] * 100)
@pytest.mark.benchmark(warmup=True, warmup_iterations=10**8, max_time=10)
def test_calibrate_xfast(benchmark):
benchmark(lambda: None)
@pytest.mark.benchmark(warmup=True, warmup_iterations=10**8, max_time=10)
def test_calibrate_slow(benchmark):
benchmark(partial(time.sleep, 0.00001))
def timer(ratio, step, additive):
t = 0
slowmode = False
while 1:
if additive:
slowmode |= bool((yield t))
else:
slowmode = bool((yield t))
if slowmode:
t += step * ratio
else:
t += step
@pytest.mark.parametrize('minimum', [1, 0.01, 0.000000001, 0.0000000001, 1.000000000000001])
@pytest.mark.parametrize('skew_ratio', [0, 1, -1])
@pytest.mark.parametrize('additive', [True, False])
@pytest.mark.benchmark(max_time=0, min_rounds=1, calibration_precision=100)
def test_calibrate_stuck(benchmark, minimum, additive, skew_ratio):
# if skew_ratio:
# ratio += skew_ratio * SKEW
if skew_ratio > 0:
ratio = 50 * 1.000000000000001
elif skew_ratio < 0:
ratio = 50 / 1.000000000000001
else:
ratio = 50
t = timer(ratio, minimum, additive)
benchmark._timer = partial(next, t)
benchmark._min_time = minimum
benchmark(t.send, True)
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