Method test_fileno

Lib/test/test_zstd.py:1754–1783

(self)

        self.assertTrue(f.closed)

    def test_fileno(self):
        # 1
        f = ZstdFile(io.BytesIO(COMPRESSED_100_PLUS_32KB))
        try:
            self.assertRaises(io.UnsupportedOperation, f.fileno)
        finally:
            f.close()
        self.assertRaises(ValueError, f.fileno)

        # 2
        with tempfile.NamedTemporaryFile(delete=False) as tmp_f:
            filename = pathlib.Path(tmp_f.name)

        f = ZstdFile(filename)
        try:
            self.assertEqual(f.fileno(), f._fp.fileno())
            self.assertIsInstance(f.fileno(), int)
        finally:
            f.close()
        self.assertRaises(ValueError, f.fileno)

        os.remove(filename)

        # 3, no .fileno() method
        class C:
            def read(self, size=-1):
                return b'123'
        with ZstdFile(C(), 'rb') as f:
            with self.assertRaisesRegex(AttributeError, r'fileno'):
                f.fileno()

    def test_name(self):
        # 1