def test_uart_rx_byte_by_byte_garbage():
api = mock.Mock()
transport = mock.Mock()
uart = znp_uart.ZnpMtProtocol(api)
uart.connection_made(transport)
test_command = c.SYS.ResetInd.Callback(
Reason=t.ResetReason.PowerUp,
TransportRev=0x00,
ProductId=0x45,
MajorRel=0x01,
MinorRel=0x02,
MaintRel=0x03,
)
test_frame = test_command.to_frame()
test_frame_bytes = TransportFrame(test_frame).serialize()
data = b""
data += bytes.fromhex("58 4a 72 35 51 da 60 ed 1f")
data += bytes.fromhex("03 6d b6")
data += bytes.fromhex("ee 90")
data += test_frame_bytes
data += bytes.fromhex("00 00")
data += bytes.fromhex("e4 4f 51 b2 39 4b 8d e3 ca 61")
data += bytes.fromhex("8c 56 8a 2c d8 22 64 9e 9d 7b")
# The frame should be parsed identically regardless of framing
for byte in data:
uart.data_received(bytes([byte]))
api.frame_received.assert_called_once_with(test_frame)
def test_uart_frame_received_error():
transport = mock.Mock()
api = mock.Mock()
api.frame_received = mock.Mock(side_effect=RuntimeError("An error"))
with pytest.raises(RuntimeError):
api.frame_received(None)
uart = znp_uart.ZnpMtProtocol(api)
uart.connection_made(transport)
test_command = c.SYS.ResetInd.Callback(
Reason=t.ResetReason.PowerUp,
TransportRev=0x00,
ProductId=0x45,
MajorRel=0x01,
MinorRel=0x02,
MaintRel=0x03,
)
test_frame = test_command.to_frame()
test_frame_bytes = TransportFrame(test_frame).serialize()
# Errors thrown by api.frame_received should not impact how many frames are handled
uart.data_received(test_frame_bytes * 3)
# We should have received all three frames
api.frame_received.call_count == 3
def test_uart_rx_sof_stress():
api = mock.Mock()
transport = mock.Mock()
uart = znp_uart.ZnpMtProtocol(api)
uart.connection_made(transport)
test_command = c.SYS.ResetInd.Callback(
Reason=t.ResetReason.PowerUp,
TransportRev=0x00,
ProductId=0x45,
MajorRel=0x01,
MinorRel=0x02,
MaintRel=0x03,
)
test_frame = test_command.to_frame()
test_frame_bytes = TransportFrame(test_frame).serialize()
# We include an almost-valid frame and many stray SoF markers
uart.data_received(b"\xFE" + b"\xFE" + b"\xFE" + test_frame_bytes[:-1] + b"\x00")
uart.data_received(b"\xFE\xFE\x00\xFE\x01")
uart.data_received(b"\xFE" + b"\xFE" + b"\xFE" + test_frame_bytes + b"\x00\x00")
# We should see the valid frame exactly once
api.frame_received.assert_called_once_with(test_frame)
def test_uart_rx_basic():
api = mock.Mock()
transport = mock.Mock()
uart = znp_uart.ZnpMtProtocol(api)
uart.connection_made(transport)
test_command = c.SYS.ResetInd.Callback(
Reason=t.ResetReason.PowerUp,
TransportRev=0x00,
ProductId=0x45,
MajorRel=0x01,
MinorRel=0x02,
MaintRel=0x03,
)
test_frame = test_command.to_frame()
test_frame_bytes = TransportFrame(test_frame).serialize()
uart.data_received(test_frame_bytes)
api.frame_received.assert_called_once_with(test_frame)
def test_uart_rx_corrupted_fcs():
api = mock.Mock()
transport = mock.Mock()
uart = znp_uart.ZnpMtProtocol(api)
uart.connection_made(transport)
test_command = c.SYS.ResetInd.Callback(
Reason=t.ResetReason.PowerUp,
TransportRev=0x00,
ProductId=0x45,
MajorRel=0x01,
MinorRel=0x02,
MaintRel=0x03,
)
test_frame = test_command.to_frame()
test_frame_bytes = TransportFrame(test_frame).serialize()
# Almost, but not quite
uart.data_received(test_frame_bytes[:-1])
uart.data_received(b"\x00")
assert not api.frame_received.called
def test_uart_str_repr():
uart = znp_uart.ZnpMtProtocol(mock.Mock())
str(uart)
repr(uart)
