backend_tests.py 文件源码

def test_integer_ranges(self):
        ffi = FFI(backend=self.Backend())
        for (c_type, size) in [('char', 1),
                               ('short', 2),
                               ('short int', 2),
                               ('', 4),
                               ('int', 4),
                               ('long', SIZE_OF_LONG),
                               ('long int', SIZE_OF_LONG),
                               ('long long', 8),
                               ('long long int', 8),
                               ]:
            for unsigned in [None, False, True]:
                c_decl = {None: '',
                          False: 'signed ',
                          True: 'unsigned '}[unsigned] + c_type
                if c_decl == 'char' or c_decl == '':
                    continue
                self._test_int_type(ffi, c_decl, size, unsigned)