Method test_detach

Lib/test/test_io.py:1262–1268

(self)

    # Tests common to BufferedReader, BufferedWriter and BufferedRandom

    def test_detach(self):
        raw = self.MockRawIO()
        buf = self.tp(raw)
        self.assertIs(buf.detach(), raw)
        self.assertRaises(ValueError, buf.detach)

        repr(buf)  # Should still work

    def test_fileno(self):
        rawio = self.MockRawIO()