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test_chargebyte_board.py
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test_chargebyte_board.py
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import socket
from unittest import mock
import pytest
from chargebyte_board import ChargebyteBoard
from chargebyte_board import *
@pytest.fixture()
def mock_socket():
mock_socket = mock.Mock()
mock_socket.recv = mock.Mock()
return mock_socket
@pytest.fixture()
def control(mocker, mock_socket):
host = socket.gethostname()
port = 4040 # The port used by the server
mocker.patch('socket.socket', return_value = mock_socket)
control = ChargebyteBoard(host,port)
return control
def xor_calculator(parameter:list[int])-> int:
answer = parameter[0]
for number in parameter[1:]:
answer = answer ^ number
return answer
def set_recv(data:list, mock):
data.append(xor_calculator(data))
mock.recv.side_effect = [[data[0]],[data[1]],data[2:]]
def proof_send_call(expected, mock):
expected.append(xor_calculator(expected))
mock.send.assert_called_once_with(expected)
class TestChargeboardByte:
def test_join_bytes(self, control):
assert control.join_bytes(0x5,0x1) == 0x105
assert control.join_bytes(0x11,0x55) == 0x5511
assert control.join_bytes(0x98,0x33) == 0x3398
def test_check_block_sum(self, control):
data = [0x10,0x00,0x01]
expected = 0x11
assert control.calculate_checksum(data) == expected
def test_should_check_length(self,control,mock_socket):
data = bytearray([0x02,0x06,0x00,0x95,0x15,0x07,0x02])
set_recv(data, mock_socket)
with pytest.raises(Exception) as info:
control.set_ucp(2)
assert info.value.args[0] == 'Something went wrong, the response has an unexpected length!'
def test_should_verify_service_id(self,control,mock_socket):
data = bytearray([0x02,0x06,0x00,0x81,0x81,0x81,0x02])
set_recv(data, mock_socket)
with pytest.raises(Exception) as info:
control.send_packet(0x51, bytearray())
control.get_response(0x51)
assert info.value.args[0] == 'we didnt get an answer'
def test_should_time_out(self, control, mock_socket):
pass # i dont know how to implement this one
def test_incorrect_checksum(self,control,mock_socket):
data = bytearray([0x02,0x06,0x00,0x81,0x81,0x81,0x02])
data.append(xor_calculator(data)+2)#check sum needs to be wrong
mock_socket.recv.side_effect = [bytearray([data[0]]), bytearray([data[1]]), bytearray(data[2:])]
with pytest.raises(Exception) as info:
control.send_packet(0x01, bytearray())
assert info.value.args[0] == 'Something went wrong: the check block is wrong!'
def test_should_start_with_answer_code(self,control,mock_socket):
data = bytearray([0x05,0x04,0x00,0x95,0x1])
set_recv(data, mock_socket)
with pytest.raises(Exception) as info:
control.set_ucp(2)
assert info.value.args[0] == 'beginning of message was not 0x02'
def test_test_device_one(self, control, mock_socket):
data = bytearray([0x02,0x06,0x00,0x81,0x81,0x81,0x03])
set_recv(data, mock_socket)
software_number, hardware_number, reset_value = control.test_device_one()
expected_request = bytearray([0x02,0x03,0x00,0x01])
proof_send_call(expected_request, mock_socket)
assert software_number == 0x81
assert hardware_number == 0x81
assert ResetType.POWER_ON_RESET in reset_value
assert ResetType.EXTERNAL_RESET in reset_value
assert ResetType.BROWN_OUT_RESET not in reset_value
def test_test_device_two(self, control, mock_socket):
data = bytearray([0x02,0x06,0x00,0x84,0x07,0x00,0x03])
set_recv(data, mock_socket)
build, reset_value = control.test_device_two()
expected_request = bytearray([0x02,0x03,0x00,0x04])
proof_send_call(expected_request, mock_socket)
assert build == 7
assert ResetReason.STOP_MODE_ERROR in reset_value
assert ResetReason.CORE_LOCKUP in reset_value
assert ResetReason.SOFTWARE_RESET not in reset_value
def test_set_pwm(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0x91,0x00])
set_recv(data, mock_socket)
control.set_pwm(2,3)
expected_request = bytearray([0x02,0x07,0x00,0x11,0x02,0x00,0x03,0x00])
proof_send_call(expected_request, mock_socket)
def test_get_pwm(self,control,mock_socket):
data = bytearray([0x02,0x07,0x00,0x90,0x02,0x00,0x03,0x00])
set_recv(data, mock_socket)
mock_socket.recv.side_effect = [bytearray([data[0]]), bytearray([data[1]]), bytearray(data[2:])]
frequency, dutycicle = control.get_pwm()
assert frequency == 2
assert dutycicle == 3
expected_request = bytearray([0x02,0x03,0x00,0x10])
proof_send_call(expected_request, mock_socket)
def test_control_pwm(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0x92,0x01])
set_recv(data, mock_socket)
control_code = control.control_pwm(1)
assert control_code.value == 1
expected_request = bytearray([0x02,0x04,0x00,0x12,0x01])
proof_send_call(expected_request, mock_socket)
def test_get_ucp(self,control,mock_socket):
data = bytearray([0x02,0x07,0x00,0x94,0x06,0x00,0x02,0x00])
set_recv(data, mock_socket)
positive_cp, negative_cp = control.get_ucp()
assert positive_cp == 6
assert negative_cp == 2
expected_request = bytearray([0x02,0x03,0x00,0x14])
proof_send_call(expected_request, mock_socket)
def test_set_ucp(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0x95,0x01])
set_recv(data, mock_socket)
resistance = control.set_ucp(1)
assert resistance == 1
expected_request = bytearray([0x02,0x04,0x00,0x15,0x01])
proof_send_call(expected_request, mock_socket)
def test_lock_and_unlock_cable_one(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0x97,0x01])
set_recv(data, mock_socket)
answer = control.lock_unlock_cable_one(2)
assert answer.value == 1
expected_request = bytearray([0x02,0x04,0x00,0x17,0x02])
proof_send_call(expected_request, mock_socket)
def test_lock_and_unlock_cable_two(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0x98,0x01])
set_recv(data, mock_socket)
answer = control.lock_unlock_cable_two(2)
assert answer.value == 1
expected_request = bytearray([0x02,0x04,0x00,0x18,0x02])
proof_send_call(expected_request, mock_socket)
def test_get_motor_fault_pin(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0x9A,0x81])
set_recv(data, mock_socket)
answer = control.get_motor_fault_pin()
assert answer.value == 1
expected_request = bytearray([0x02,0x03,0x00,0x1A])
proof_send_call(expected_request, mock_socket)
def test_set_cyclic_process_data(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0xA0,0x01])
set_recv(data, mock_socket)
answer = control.set_cyclic_process_data(4)
assert answer.value == 1
expected_request = bytearray([0x02,0x04,0x00,0x20,0x04])
proof_send_call(expected_request, mock_socket)
def test_cyclic_process_data(self,control,mock_socket):
pass
def test_push_button_simple_connect(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0xB1,0x00])
set_recv(data, mock_socket)
answer = control.push_button_simple_connect(1)
assert answer.value == 0
expected_request = bytearray([0x02,0x04,0x00,0x31,0x01])
proof_send_call(expected_request, mock_socket)
def test_reset(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0xB3,0x00])
set_recv(data, mock_socket)
control.reset()
expected_request = bytearray([0x02,0x03,0x00,0x33])
proof_send_call(expected_request, mock_socket)
def test_activate_proximity_pilot_resistor_(self,control,mock_socket):
data = bytearray([0x02,0x04,0x00,0xD0,0x00])
set_recv(data, mock_socket)
answer = control.activate_proximity_pilot_resistor(0x06)
assert answer.value == 0
expected_request = bytearray([0x02,0x04,0x00,0x50,0x06])
proof_send_call(expected_request, mock_socket)
def test_enable_pullup_resistor(self, control, mock_socket):
data = bytearray([0x02,0x04,0x00,0xD1,0x00])
set_recv(data, mock_socket)
answer = control.enable_pullup_resistor()
expected_request = bytearray([0x02,0x04,0x00,0x51,0x03])
proof_send_call(expected_request, mock_socket)
def test_disable_pullup_resistor(self, control, mock_socket):
data = bytearray([0x02,0x04,0x00,0xD1,0x00])
set_recv(data, mock_socket)
answer = control.disable_pullup_resistor()
expected_request = bytearray([0x02,0x04,0x00,0x51,0x00])
proof_send_call(expected_request, mock_socket)
def test_get_voltage_of_proximity_signal(self, control, mock_socket):
data = bytearray([0x02,0x05,0x00,0xD2,0x07,0x00])
set_recv(data, mock_socket)
answer = control.get_voltage_of_proximity_signal()
assert answer == 7
expected_request = bytearray([0x02,0x03,0x00,0x52])
proof_send_call(expected_request, mock_socket)