118 lines
4.1 KiB
Python
118 lines
4.1 KiB
Python
"""See https://github.com/numpy/numpy/pull/11937.
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"""
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import sys
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import os
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import uuid
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from importlib import import_module
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import pytest
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import numpy.f2py
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from . import util
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def setup_module():
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if not util.has_c_compiler():
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pytest.skip("Needs C compiler")
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if not util.has_f77_compiler():
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pytest.skip("Needs FORTRAN 77 compiler")
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# extra_args can be a list (since gh-11937) or string.
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# also test absence of extra_args
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@pytest.mark.parametrize("extra_args",
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[["--noopt", "--debug"], "--noopt --debug", ""])
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@pytest.mark.leaks_references(reason="Imported module seems never deleted.")
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def test_f2py_init_compile(extra_args):
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# flush through the f2py __init__ compile() function code path as a
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# crude test for input handling following migration from
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# exec_command() to subprocess.check_output() in gh-11937
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# the Fortran 77 syntax requires 6 spaces before any commands, but
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# more space may be added/
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fsource = """
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integer function foo()
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foo = 10 + 5
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return
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end
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"""
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# use various helper functions in util.py to enable robust build /
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# compile and reimport cycle in test suite
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moddir = util.get_module_dir()
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modname = util.get_temp_module_name()
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cwd = os.getcwd()
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target = os.path.join(moddir, str(uuid.uuid4()) + ".f")
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# try running compile() with and without a source_fn provided so
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# that the code path where a temporary file for writing Fortran
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# source is created is also explored
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for source_fn in [target, None]:
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# mimic the path changing behavior used by build_module() in
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# util.py, but don't actually use build_module() because it has
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# its own invocation of subprocess that circumvents the
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# f2py.compile code block under test
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with util.switchdir(moddir):
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ret_val = numpy.f2py.compile(fsource,
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modulename=modname,
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extra_args=extra_args,
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source_fn=source_fn)
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# check for compile success return value
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assert ret_val == 0
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# we are not currently able to import the Python-Fortran
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# interface module on Windows / Appveyor, even though we do get
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# successful compilation on that platform with Python 3.x
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if sys.platform != "win32":
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# check for sensible result of Fortran function; that means
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# we can import the module name in Python and retrieve the
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# result of the sum operation
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return_check = import_module(modname)
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calc_result = return_check.foo()
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assert calc_result == 15
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# Removal from sys.modules, is not as such necessary. Even with
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# removal, the module (dict) stays alive.
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del sys.modules[modname]
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def test_f2py_init_compile_failure():
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# verify an appropriate integer status value returned by
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# f2py.compile() when invalid Fortran is provided
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ret_val = numpy.f2py.compile(b"invalid")
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assert ret_val == 1
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def test_f2py_init_compile_bad_cmd():
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# verify that usage of invalid command in f2py.compile() returns
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# status value of 127 for historic consistency with exec_command()
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# error handling
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# patch the sys Python exe path temporarily to induce an OSError
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# downstream NOTE: how bad of an idea is this patching?
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try:
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temp = sys.executable
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sys.executable = "does not exist"
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# the OSError should take precedence over invalid Fortran
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ret_val = numpy.f2py.compile(b"invalid")
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assert ret_val == 127
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finally:
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sys.executable = temp
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@pytest.mark.parametrize(
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"fsource",
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[
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"program test_f2py\nend program test_f2py",
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b"program test_f2py\nend program test_f2py",
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],
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)
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def test_compile_from_strings(tmpdir, fsource):
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# Make sure we can compile str and bytes gh-12796
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with util.switchdir(tmpdir):
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ret_val = numpy.f2py.compile(fsource,
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modulename="test_compile_from_strings",
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extension=".f90")
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assert ret_val == 0
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