Method test_prepend_error

Lib/test/test_gzip.py:820–825

(self)

            self.assertEqual(f.read(), b'Test')

    def test_prepend_error(self):
        # See issue #20875
        with gzip.open(self.filename, "wb") as f:
            f.write(data1)
        with gzip.open(self.filename, "rb") as f:
            f._buffer.raw._fp.prepend()

    def test_issue44439(self):
        q = array.array('Q', [1, 2, 3, 4, 5])