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