96 lines
3.4 KiB
Python
96 lines
3.4 KiB
Python
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# Pytest customization
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import os
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import pytest
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import warnings
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import numpy as np
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import numpy.testing as npt
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from scipy._lib._fpumode import get_fpu_mode
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from scipy._lib._testutils import FPUModeChangeWarning
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from scipy._lib import _pep440
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def pytest_configure(config):
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config.addinivalue_line("markers",
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"slow: Tests that are very slow.")
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config.addinivalue_line("markers",
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"xslow: mark test as extremely slow (not run unless explicitly requested)")
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config.addinivalue_line("markers",
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"xfail_on_32bit: mark test as failing on 32-bit platforms")
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try:
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import pytest_timeout # noqa:F401
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except Exception:
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config.addinivalue_line(
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"markers", 'timeout: mark a test for a non-default timeout')
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def _get_mark(item, name):
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if _pep440.parse(pytest.__version__) >= _pep440.Version("3.6.0"):
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mark = item.get_closest_marker(name)
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else:
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mark = item.get_marker(name)
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return mark
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def pytest_runtest_setup(item):
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mark = _get_mark(item, "xslow")
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if mark is not None:
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try:
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v = int(os.environ.get('SCIPY_XSLOW', '0'))
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except ValueError:
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v = False
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if not v:
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pytest.skip("very slow test; set environment variable SCIPY_XSLOW=1 to run it")
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mark = _get_mark(item, 'xfail_on_32bit')
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if mark is not None and np.intp(0).itemsize < 8:
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pytest.xfail('Fails on our 32-bit test platform(s): %s' % (mark.args[0],))
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# Older versions of threadpoolctl have an issue that may lead to this
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# warning being emitted, see gh-14441
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with npt.suppress_warnings() as sup:
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sup.filter(pytest.PytestUnraisableExceptionWarning)
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try:
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from threadpoolctl import threadpool_limits
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HAS_THREADPOOLCTL = True
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except Exception: # observed in gh-14441: (ImportError, AttributeError)
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# Optional dependency only. All exceptions are caught, for robustness
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HAS_THREADPOOLCTL = False
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if HAS_THREADPOOLCTL:
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# Set the number of openmp threads based on the number of workers
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# xdist is using to prevent oversubscription. Simplified version of what
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# sklearn does (it can rely on threadpoolctl and its builtin OpenMP helper
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# functions)
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try:
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xdist_worker_count = int(os.environ['PYTEST_XDIST_WORKER_COUNT'])
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except KeyError:
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# raises when pytest-xdist is not installed
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return
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if not os.getenv('OMP_NUM_THREADS'):
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max_openmp_threads = os.cpu_count() // 2 # use nr of physical cores
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threads_per_worker = max(max_openmp_threads // xdist_worker_count, 1)
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try:
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threadpool_limits(threads_per_worker, user_api='blas')
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except Exception:
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# May raise AttributeError for older versions of OpenBLAS.
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# Catch any error for robustness.
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return
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@pytest.fixture(scope="function", autouse=True)
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def check_fpu_mode(request):
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"""
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Check FPU mode was not changed during the test.
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"""
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old_mode = get_fpu_mode()
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yield
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new_mode = get_fpu_mode()
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if old_mode != new_mode:
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warnings.warn("FPU mode changed from {0:#x} to {1:#x} during "
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"the test".format(old_mode, new_mode),
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category=FPUModeChangeWarning, stacklevel=0)
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