pypy / pypy / module / _cffi_backend / test /

from __future__ import with_statement
This file is OBSCURE.  Really.  The purpose is to avoid copying and changing
'' from cffi/c/.
import py, ctypes
from pypy.tool.udir import udir
from pypy.conftest import gettestobjspace
from pypy.interpreter import gateway
from pypy.module._cffi_backend.test import _backend_test_c
from pypy.module._cffi_backend import Module

class AppTestC(object):
    """Populated below, hack hack hack."""

    def setup_class(cls):
        space = gettestobjspace(usemodules=('_cffi_backend',)) = space
        testfuncs_w = []
        keepalive_funcs = []

        def find_and_load_library_for_test(space, w_name):
            import ctypes.util
            path = ctypes.util.find_library(space.str_w(w_name))
            return space.appexec([space.wrap(path)], """(path):
                import _cffi_backend
                return _cffi_backend.load_library(path)""")

        def testfunc0(a, b):
            return chr((ord(a) + ord(b)) & 0xFF)

        def prepfunc(func, argtypes, restype):
            c_func = ctypes.CFUNCTYPE(restype, *argtypes)(func)
            return ctypes.cast(c_func, ctypes.c_void_p).value

        def testfunc_for_test(space, w_num):
            if not testfuncs_w:
                testfuncs = [
                             (ctypes.c_char, ctypes.c_char), ctypes.c_char),
                testfuncs_w[:] = [space.wrap(addr) for addr in testfuncs]
            return testfuncs_w[space.int_w(w_num)]

        w_func = space.wrap(gateway.interp2app(find_and_load_library_for_test))
        w_testfunc = space.wrap(gateway.interp2app(testfunc_for_test))
        space.appexec([space.wrap(str(tmpdir)), w_func, w_testfunc],
        """(path, func, testfunc):
            import sys
            import _all_test_c
            _all_test_c.find_and_load_library = func
            _all_test_c._testfunc = testfunc

all_names = ', '.join(Module.interpleveldefs.keys())

lst = []
for name, value in _backend_test_c.__dict__.items():
    if name.startswith('test_'):
lst.sort(key=lambda func: func.func_code.co_firstlineno)

tmpdir = udir.join('test_c').ensure(dir=1)

tmpname = tmpdir.join('')
with'w') as f:
    for func in lst:
        print >> f, 'def %s(self):' % (func.__name__,)
        print >> f, '    import _all_test_c'
        print >> f, '    _all_test_c.%s()' % (func.__name__,)

tmpname2 = tmpdir.join('')
with'w') as f:
    print >> f, 'import sys'
    print >> f, 'from _cffi_backend import %s' % all_names
    print >> f, 'class py:'
    print >> f, '    class test:'
    print >> f, '        raises = staticmethod(raises)'
    print >> f, py.path.local(__file__).join('..', '').read()

mod = tmpname.pyimport()
for key, value in mod.__dict__.items():
    if key.startswith('test_'):
        setattr(AppTestC, key, value)
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