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230 lines
6.0 KiB
230 lines
6.0 KiB
import math
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import textwrap
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import sys
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import pytest
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import threading
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import traceback
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import time
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import numpy as np
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from numpy.testing import IS_PYPY
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from . import util
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class TestF77Callback(util.F2PyTest):
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sources = [util.getpath("tests", "src", "callback", "foo.f")]
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@pytest.mark.parametrize("name", "t,t2".split(","))
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def test_all(self, name):
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self.check_function(name)
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@pytest.mark.xfail(IS_PYPY,
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reason="PyPy cannot modify tp_doc after PyType_Ready")
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def test_docstring(self):
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expected = textwrap.dedent("""\
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a = t(fun,[fun_extra_args])
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Wrapper for ``t``.
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Parameters
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----------
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fun : call-back function
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Other Parameters
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----------------
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fun_extra_args : input tuple, optional
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Default: ()
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Returns
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-------
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a : int
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Notes
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-----
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Call-back functions::
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def fun(): return a
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Return objects:
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a : int
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""")
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assert self.module.t.__doc__ == expected
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def check_function(self, name):
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t = getattr(self.module, name)
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r = t(lambda: 4)
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assert r == 4
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r = t(lambda a: 5, fun_extra_args=(6, ))
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assert r == 5
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r = t(lambda a: a, fun_extra_args=(6, ))
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assert r == 6
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r = t(lambda a: 5 + a, fun_extra_args=(7, ))
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assert r == 12
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r = t(lambda a: math.degrees(a), fun_extra_args=(math.pi, ))
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assert r == 180
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r = t(math.degrees, fun_extra_args=(math.pi, ))
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assert r == 180
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r = t(self.module.func, fun_extra_args=(6, ))
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assert r == 17
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r = t(self.module.func0)
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assert r == 11
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r = t(self.module.func0._cpointer)
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assert r == 11
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class A:
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def __call__(self):
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return 7
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def mth(self):
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return 9
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a = A()
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r = t(a)
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assert r == 7
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r = t(a.mth)
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assert r == 9
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@pytest.mark.skipif(sys.platform == 'win32',
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reason='Fails with MinGW64 Gfortran (Issue #9673)')
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def test_string_callback(self):
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def callback(code):
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if code == "r":
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return 0
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else:
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return 1
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f = getattr(self.module, "string_callback")
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r = f(callback)
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assert r == 0
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@pytest.mark.skipif(sys.platform == 'win32',
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reason='Fails with MinGW64 Gfortran (Issue #9673)')
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def test_string_callback_array(self):
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# See gh-10027
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cu1 = np.zeros((1, ), "S8")
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cu2 = np.zeros((1, 8), "c")
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cu3 = np.array([""], "S8")
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def callback(cu, lencu):
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if cu.shape != (lencu,):
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return 1
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if cu.dtype != "S8":
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return 2
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if not np.all(cu == b""):
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return 3
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return 0
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f = getattr(self.module, "string_callback_array")
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for cu in [cu1, cu2, cu3]:
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res = f(callback, cu, cu.size)
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assert res == 0
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def test_threadsafety(self):
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# Segfaults if the callback handling is not threadsafe
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errors = []
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def cb():
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# Sleep here to make it more likely for another thread
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# to call their callback at the same time.
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time.sleep(1e-3)
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# Check reentrancy
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r = self.module.t(lambda: 123)
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assert r == 123
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return 42
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def runner(name):
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try:
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for j in range(50):
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r = self.module.t(cb)
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assert r == 42
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self.check_function(name)
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except Exception:
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errors.append(traceback.format_exc())
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threads = [
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threading.Thread(target=runner, args=(arg, ))
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for arg in ("t", "t2") for n in range(20)
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]
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for t in threads:
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t.start()
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for t in threads:
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t.join()
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errors = "\n\n".join(errors)
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if errors:
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raise AssertionError(errors)
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def test_hidden_callback(self):
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try:
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self.module.hidden_callback(2)
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except Exception as msg:
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assert str(msg).startswith("Callback global_f not defined")
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try:
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self.module.hidden_callback2(2)
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except Exception as msg:
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assert str(msg).startswith("cb: Callback global_f not defined")
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self.module.global_f = lambda x: x + 1
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r = self.module.hidden_callback(2)
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assert r == 3
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self.module.global_f = lambda x: x + 2
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r = self.module.hidden_callback(2)
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assert r == 4
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del self.module.global_f
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try:
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self.module.hidden_callback(2)
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except Exception as msg:
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assert str(msg).startswith("Callback global_f not defined")
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self.module.global_f = lambda x=0: x + 3
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r = self.module.hidden_callback(2)
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assert r == 5
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# reproducer of gh18341
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r = self.module.hidden_callback2(2)
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assert r == 3
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class TestF77CallbackPythonTLS(TestF77Callback):
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"""
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Callback tests using Python thread-local storage instead of
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compiler-provided
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"""
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options = ["-DF2PY_USE_PYTHON_TLS"]
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class TestF90Callback(util.F2PyTest):
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sources = [util.getpath("tests", "src", "callback", "gh17797.f90")]
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def test_gh17797(self):
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def incr(x):
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return x + 123
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y = np.array([1, 2, 3], dtype=np.int64)
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r = self.module.gh17797(incr, y)
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assert r == 123 + 1 + 2 + 3
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class TestGH18335(util.F2PyTest):
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"""The reproduction of the reported issue requires specific input that
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extensions may break the issue conditions, so the reproducer is
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implemented as a separate test class. Do not extend this test with
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other tests!
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"""
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sources = [util.getpath("tests", "src", "callback", "gh18335.f90")]
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def test_gh18335(self):
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def foo(x):
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x[0] += 1
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r = self.module.gh18335(foo)
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assert r == 123 + 1
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