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conftest_example.py
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conftest_example.py
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import numpy as np
import pytest
# add a commandline option to pytest
def pytest_addoption(parser):
"""Add random seed option to py.test.
"""
parser.addoption('--seed', dest='seed', type=int, action='store',
help='set random seed')
# configure pytest to automatically set the rnd seed if not passed on CLI
def pytest_configure(config):
seed = config.getvalue("seed")
# if seed was not set by the user, we set one now
if seed is None or seed == ('NO', 'DEFAULT'):
config.option.seed = int(np.random.randint(2 ** 31 - 1))
def pytest_report_header(config):
return f'Using random seed: {config.option.seed}'
@pytest.fixture
def random_state(request):
random_state = np.random.RandomState(request.config.option.seed)
return random_state