test_memoryview.py 文件源码

def test_writable_readonly(self):
        # Issue #10451: memoryview incorrectly exposes a readonly
        # buffer as writable causing a segfault if using mmap
        tp = self.ro_type
        if tp is None:
            return
        b = tp(self._source)
        m = self._view(b)
        i = io.BytesIO(b'ZZZZ')
        self.assertRaises(TypeError, i.readinto, m)

# Variations on source objects for the buffer: bytes-like objects, then arrays
# with itemsize > 1.
# NOTE: support for multi-dimensional objects is unimplemented.