backend_tests.py 文件源码

def test_ffi_buffer_ptr_size(self):
        ffi = FFI(backend=self.Backend())
        a = ffi.new("short *", 0x4243)
        try:
            b = ffi.buffer(a, 1)
        except NotImplementedError as e:
            py.test.skip(str(e))
        content = b[:]
        assert len(content) == 1
        if sys.byteorder == 'little':
            assert content == b'\x43'
            b[0] = b'\x62'
            assert a[0] == 0x4262
        else:
            assert content == b'\x42'
            b[0] = b'\x63'
            assert a[0] == 0x6343