Mercurial > repos > rliterman > csp2

comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/site-packages/scipy/conftest.py @ 69:33d812a61356

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
parents
children
comparison
equal deleted inserted replaced
67:0e9998148a16 69:33d812a61356
1 # Pytest customization
2 import os
3 import pytest
4 import warnings
5
6 import numpy as np
7 import numpy.testing as npt
8 from scipy._lib._fpumode import get_fpu_mode
9 from scipy._lib._testutils import FPUModeChangeWarning
10 from scipy._lib import _pep440
11
12
13 def pytest_configure(config):
14 config.addinivalue_line("markers",
15 "slow: Tests that are very slow.")
16 config.addinivalue_line("markers",
17 "xslow: mark test as extremely slow (not run unless explicitly requested)")
18 config.addinivalue_line("markers",
19 "xfail_on_32bit: mark test as failing on 32-bit platforms")
20 try:
21 import pytest_timeout # noqa:F401
22 except Exception:
23 config.addinivalue_line(
24 "markers", 'timeout: mark a test for a non-default timeout')
25
26
27 def _get_mark(item, name):
28 if _pep440.parse(pytest.__version__) >= _pep440.Version("3.6.0"):
29 mark = item.get_closest_marker(name)
30 else:
31 mark = item.get_marker(name)
32 return mark
33
34
35 def pytest_runtest_setup(item):
36 mark = _get_mark(item, "xslow")
37 if mark is not None:
38 try:
39 v = int(os.environ.get('SCIPY_XSLOW', '0'))
40 except ValueError:
41 v = False
42 if not v:
43 pytest.skip("very slow test; set environment variable SCIPY_XSLOW=1 to run it")
44 mark = _get_mark(item, 'xfail_on_32bit')
45 if mark is not None and np.intp(0).itemsize < 8:
46 pytest.xfail('Fails on our 32-bit test platform(s): %s' % (mark.args[0],))
47
48 # Older versions of threadpoolctl have an issue that may lead to this
49 # warning being emitted, see gh-14441
50 with npt.suppress_warnings() as sup:
51 sup.filter(pytest.PytestUnraisableExceptionWarning)
52
53 try:
54 from threadpoolctl import threadpool_limits
55
56 HAS_THREADPOOLCTL = True
57 except Exception: # observed in gh-14441: (ImportError, AttributeError)
58 # Optional dependency only. All exceptions are caught, for robustness
59 HAS_THREADPOOLCTL = False
60
61 if HAS_THREADPOOLCTL:
62 # Set the number of openmp threads based on the number of workers
63 # xdist is using to prevent oversubscription. Simplified version of what
64 # sklearn does (it can rely on threadpoolctl and its builtin OpenMP helper
65 # functions)
66 try:
67 xdist_worker_count = int(os.environ['PYTEST_XDIST_WORKER_COUNT'])
68 except KeyError:
69 # raises when pytest-xdist is not installed
70 return
71
72 if not os.getenv('OMP_NUM_THREADS'):
73 max_openmp_threads = os.cpu_count() // 2 # use nr of physical cores
74 threads_per_worker = max(max_openmp_threads // xdist_worker_count, 1)
75 try:
76 threadpool_limits(threads_per_worker, user_api='blas')
77 except Exception:
78 # May raise AttributeError for older versions of OpenBLAS.
79 # Catch any error for robustness.
80 return
81
82
83 @pytest.fixture(scope="function", autouse=True)
84 def check_fpu_mode(request):
85 """
86 Check FPU mode was not changed during the test.
87 """
88 old_mode = get_fpu_mode()
89 yield
90 new_mode = get_fpu_mode()
91
92 if old_mode != new_mode:
93 warnings.warn("FPU mode changed from {0:#x} to {1:#x} during "
94 "the test".format(old_mode, new_mode),
95 category=FPUModeChangeWarning, stacklevel=0)