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# This is free software: you can redistribute it and/or modify it

# under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

# General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program. If not, see

# <http://www.gnu.org/licenses/>.

from distutils import sysconfig as sc

import os

import shutil

from subprocess import Popen, PIPE

import sys

import sysconfig

import tempfile

import unittest

import six

from cpybuilder import *

def get_module_filename(name):

# Python 3.2 onwards embeds the SOABI variable in module filenames

# (see PEP 3149):

SOABI = sysconfig.get_config_var('SOABI')

if SOABI:

return '%s.%s.so' % (name, SOABI)

if hasattr(sys, "getobjects"):

# debug build of Python:

# FIXME: this is a Fedora-ism:

return '%s_d.so' % name

else:

# regular (optimized) build of Python:

return '%s.so' % name

class CompilationError(CommandError):

def __init__(self, bm):

CommandError.__init__(self, bm.out, bm.err, bm.p)

self.bm = bm

def _describe_activity(self):

return 'compiling: %s' % ' '.join(self.bm.args)

class BuiltModule:

"""A test build of a SimpleModule using sys.executable, done in a tempdir"""

def __init__(self, sm):

self.sm = sm

def write_src(self, modname, extra_cflags = None):

self.tmpdir = tempfile.mkdtemp()

self.srcfile = os.path.join(self.tmpdir, '%s.c' % modname)

self.modfile = os.path.join(self.tmpdir, get_module_filename(modname))

f = open(self.srcfile, 'w')

f.write(self.sm.cu.as_str())

f.close()

def compile_src(self, extra_cflags = None):

self.args = [os.environ.get('CC', 'gcc')]

self.args += ['-o', self.modfile]

self.args += ['-I' + sc.get_python_inc(),

'-I' + sc.get_python_inc(plat_specific=True)]

self.args += sc.get_config_var('CFLAGS').split()

self.args += ['-Wall', '-Werror'] # during testing

# on some builds of Python, CFLAGS does not contain -fPIC, but it

# appears to still be necessary:

self.args += ['-fPIC']

self.args += ['-shared'] # not sure why this is necessary

if extra_cflags:

self.args += extra_cflags

self.args += [self.srcfile]

# print(self.args)

env = dict(os.environ)

env['LC_ALL'] = 'C'

# Invoke the compiler:

self.p = Popen(self.args, env=env, stdout=PIPE, stderr=PIPE)

self.out, self.err = self.p.communicate()

if six.PY3:

self.out = self.out.decode()

self.err = self.err.decode()

c = self.p.wait()

if c != 0:

raise CompilationError(self)

assert os.path.exists(self.modfile)

# print(self.modfile)

def build(self, modname, extra_cflags = None):

self.write_src(modname)

self.compile_src(extra_cflags)

def cleanup(self):

shutil.rmtree(self.tmpdir)

class SimpleTest(unittest.TestCase):

# We'll be manipulating sys.path during the test

# Save a copy, and restore it after each test:

def setUp(self):

self.saved_sys_path = sys.path

sys.path = sys.path[:]

def tearDown(self):

sys.path = self.saved_sys_path

def test_simple_compilation(self):

# Verify building and running a trivial module (against multiple Python runtimes)

MODNAME = 'simple_compilation'

sm = SimpleModule()

sm.cu.add_decl("""

static PyObject *

example_hello(PyObject *self, PyObject *args);

""")

sm.cu.add_defn("""

static PyObject *

example_hello(PyObject *self, PyObject *args)

{

return Py_BuildValue("s", "Hello world!");

}

""")

methods = PyMethodTable('example_methods',

[PyMethodDef('hello', 'example_hello',

METH_VARARGS, 'Return a greeting.')])

sm.cu.add_defn(methods.c_defn())

sm.add_module_init(MODNAME, modmethods=methods, moddoc='This is a doc string')

# print(sm.cu.as_str())

# Build the module:

bm = BuiltModule(sm)

bm.build(MODNAME)

# Verify that it built:

sys.path.append(bm.tmpdir)

import simple_compilation

self.assertEqual(simple_compilation.hello(), 'Hello world!')

# Cleanup successful test runs:

bm.cleanup()

def test_module_with_type(self):

# Verify an extension with a type

MODNAME = 'module_with_type'

sm = SimpleModule()

sm.cu.add_decl("""

struct PyExampleType {

PyObject_HEAD

int i;

};

""")

sm.cu.add_defn("PyObject *\n"

"example_Example_repr(PyObject * self)\n"

"{\n"

"#if PY_MAJOR_VERSION < 3\n"

" return PyString_FromString(\"example.ExampleType('')\");\n"

"#else\n"

" return PyUnicode_FromString(\"example.ExampleType('')\");\n"

"#endif\n"

"}\n")

sm.add_type_object(name = 'example_ExampleType',

localname = 'ExampleType',

tp_name = 'example.ExampleType',

struct_name = 'struct PyExampleType',

tp_repr = 'example_Example_repr')

sm.add_module_init(MODNAME, modmethods=None, moddoc='This is a doc string')

# print sm.cu.as_str()

# Build the module:

bm = BuiltModule(sm)

bm.build(MODNAME)

# Verify that it built:

sys.path.append(bm.tmpdir)

import module_with_type

self.assertEqual(repr(module_with_type.ExampleType()),

"example.ExampleType('')")

# Cleanup successful test runs:

bm.cleanup()

def test_version_parsing(self):

vi = PyVersionInfo.from_text("sys.version_info(major=2, minor=7, micro=1, releaselevel='final', serial=0)")

self.assertEqual(vi,

PyVersionInfo(major=2, minor=7, micro=1, releaselevel='final', serial=0))

# "sys.version_info(major=2, minor=7, micro=1, releaselevel='final', serial=0)"

# "sys.version_info(major=3, minor=2, micro=0, releaselevel='candidate', serial=1)"

if __name__ == '__main__':

unittest.main()

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