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100 lines
3.6 KiB
100 lines
3.6 KiB
3 years ago
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import os
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import pytest
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import shutil
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import subprocess
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import sys
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import warnings
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import numpy as np
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from numpy.distutils.misc_util import exec_mod_from_location
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from numpy.testing import IS_WASM
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try:
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import cffi
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except ImportError:
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cffi = None
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if sys.flags.optimize > 1:
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# no docstrings present to inspect when PYTHONOPTIMIZE/Py_OptimizeFlag > 1
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# cffi cannot succeed
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cffi = None
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try:
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with warnings.catch_warnings(record=True) as w:
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# numba issue gh-4733
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warnings.filterwarnings('always', '', DeprecationWarning)
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import numba
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except (ImportError, SystemError):
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# Certain numpy/numba versions trigger a SystemError due to a numba bug
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numba = None
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try:
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import cython
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from Cython.Compiler.Version import version as cython_version
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except ImportError:
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cython = None
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else:
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from numpy.compat import _pep440
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# Cython 0.29.30 is required for Python 3.11 and there are
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# other fixes in the 0.29 series that are needed even for earlier
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# Python versions.
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# Note: keep in sync with the one in pyproject.toml
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required_version = '0.29.30'
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if _pep440.parse(cython_version) < _pep440.Version(required_version):
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# too old or wrong cython, skip the test
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cython = None
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@pytest.mark.skipif(IS_WASM, reason="Can't start subprocess")
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@pytest.mark.skipif(cython is None, reason="requires cython")
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@pytest.mark.slow
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def test_cython(tmp_path):
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srcdir = os.path.join(os.path.dirname(__file__), '..')
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shutil.copytree(srcdir, tmp_path / 'random')
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# build the examples and "install" them into a temporary directory
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build_dir = tmp_path / 'random' / '_examples' / 'cython'
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subprocess.check_call([sys.executable, 'setup.py', 'build', 'install',
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'--prefix', str(tmp_path / 'installdir'),
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'--single-version-externally-managed',
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'--record', str(tmp_path/ 'tmp_install_log.txt'),
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],
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cwd=str(build_dir),
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)
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# gh-16162: make sure numpy's __init__.pxd was used for cython
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# not really part of this test, but it is a convenient place to check
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with open(build_dir / 'extending.c') as fid:
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txt_to_find = 'NumPy API declarations from "numpy/__init__.pxd"'
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for i, line in enumerate(fid):
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if txt_to_find in line:
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break
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else:
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assert False, ("Could not find '{}' in C file, "
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"wrong pxd used".format(txt_to_find))
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# get the path to the so's
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so1 = so2 = None
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with open(tmp_path /'tmp_install_log.txt') as fid:
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for line in fid:
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if 'extending.' in line:
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so1 = line.strip()
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if 'extending_distributions' in line:
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so2 = line.strip()
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assert so1 is not None
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assert so2 is not None
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# import the so's without adding the directory to sys.path
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exec_mod_from_location('extending', so1)
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extending_distributions = exec_mod_from_location(
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'extending_distributions', so2)
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# actually test the cython c-extension
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from numpy.random import PCG64
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values = extending_distributions.uniforms_ex(PCG64(0), 10, 'd')
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assert values.shape == (10,)
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assert values.dtype == np.float64
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@pytest.mark.skipif(numba is None or cffi is None,
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reason="requires numba and cffi")
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def test_numba():
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from numpy.random._examples.numba import extending # noqa: F401
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@pytest.mark.skipif(cffi is None, reason="requires cffi")
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def test_cffi():
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from numpy.random._examples.cffi import extending # noqa: F401
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