def test_recv_ordered(self):
stream = QuicStream()
# add data at start
stream.add_frame(QuicStreamFrame(offset=0, data=b"01234567"))
self.assertEqual(bytes(stream._recv_buffer), b"01234567")
self.assertEqual(list(stream._recv_ranges), [range(0, 8)])
self.assertEqual(stream._recv_buffer_start, 0)
# pull data
self.assertEqual(stream.pull_data(), b"01234567")
self.assertEqual(bytes(stream._recv_buffer), b"")
self.assertEqual(list(stream._recv_ranges), [])
self.assertEqual(stream._recv_buffer_start, 8)
# add more data
stream.add_frame(QuicStreamFrame(offset=8, data=b"89012345"))
self.assertEqual(bytes(stream._recv_buffer), b"89012345")
self.assertEqual(list(stream._recv_ranges), [range(8, 16)])
self.assertEqual(stream._recv_buffer_start, 8)
# pull data
self.assertEqual(stream.pull_data(), b"89012345")
self.assertEqual(bytes(stream._recv_buffer), b"")
self.assertEqual(list(stream._recv_ranges), [])
self.assertEqual(stream._recv_buffer_start, 16)
def test_recv_fin_twice(self):
stream = QuicStream(stream_id=0)
stream.add_frame(QuicStreamFrame(offset=0, data=b"01234567"))
stream.add_frame(QuicStreamFrame(offset=8, data=b"89012345", fin=True))
stream.add_frame(QuicStreamFrame(offset=8, data=b"89012345", fin=True))
self.assertEqual(stream.pull_data(), b"0123456789012345")
def test_recv_already_partially_consumed(self):
stream = QuicStream()
stream.add_frame(QuicStreamFrame(offset=0, data=b"01234567"))
self.assertEqual(stream.pull_data(), b"01234567")
stream.add_frame(QuicStreamFrame(offset=0, data=b"0123456789012345"))
self.assertEqual(bytes(stream._recv_buffer), b"89012345")
self.assertEqual(list(stream._recv_ranges), [range(8, 16)])
self.assertEqual(stream._recv_buffer_start, 8)
self.assertEqual(stream.pull_data(), b"89012345")
self.assertEqual(stream._recv_buffer_start, 16)
def test_recv_offset_only(self):
stream = QuicStream()
# add data at offset 0
stream.add_frame(QuicStreamFrame(offset=0, data=b""))
self.assertEqual(bytes(stream._recv_buffer), b"")
self.assertEqual(list(stream._recv_ranges), [])
self.assertEqual(stream._recv_buffer_start, 0)
# add data at offset 8
stream.add_frame(QuicStreamFrame(offset=8, data=b""))
self.assertEqual(bytes(stream._recv_buffer),
b"\x00\x00\x00\x00\x00\x00\x00\x00")
self.assertEqual(list(stream._recv_ranges), [])
self.assertEqual(stream._recv_buffer_start, 0)
def test_recv_fin_without_data(self):
stream = QuicStream(stream_id=0)
stream.add_frame(QuicStreamFrame(offset=0, data=b"", fin=True))
self.assertEqual(stream.pull_data(), b"")
def test_recv_fin_then_data(self):
stream = QuicStream(stream_id=0)
stream.add_frame(QuicStreamFrame(offset=0, data=b"", fin=True))
with self.assertRaises(Exception) as cm:
stream.add_frame(QuicStreamFrame(offset=0, data=b"01234567"))
self.assertEqual(str(cm.exception), "Data received beyond FIN")
def test_recv_fin_out_of_order(self):
stream = QuicStream(stream_id=0)
stream.add_frame(QuicStreamFrame(offset=8, data=b"89012345", fin=True))
stream.add_frame(QuicStreamFrame(offset=0, data=b"01234567"))
self.assertEqual(run(stream.reader.read()), b"0123456789012345")
