Method assertFrameData

tests/test_frames.py:28–43

Serializing frame yields data. Parsing data yields frame.

(self, frame, data, mask, extensions=None)

        return self.assertGeneratorReturns(parser)

    def assertFrameData(self, frame, data, mask, extensions=None):
        """
        Serializing frame yields data. Parsing data yields frame.

        """
        # Compare frames first, because test failures are easier to read,
        # especially when mask = True.
        parsed = self.parse(data, mask=mask, extensions=extensions)
        self.assertEqual(parsed, frame)

        # Make masking deterministic by reusing the same "random" mask.
        # This has an effect only when mask is True.
        mask_bytes = data[2:6] if mask else b""
        with patch("secrets.token_bytes", return_value=mask_bytes):
            serialized = frame.serialize(mask=mask, extensions=extensions)
        self.assertEqual(serialized, data)


class FrameTests(FramesTestCase):