def test_WHEN_motor_temperature_is_too_high_THEN_over_temperature_is_true(
self):
self.ca.assert_that_pv_is("TEMP:RANGECHECK", 0)
with assert_log_messages(
self._ioc,
in_time=5,
must_contain=ErrorStrings.MOTOR_TEMP_TOO_HIGH):
self._lewis.backdoor_set_on_device("motor_temp", 46)
self.ca.assert_that_pv_is("TEMP:RANGECHECK", 1)
def test_GIVEN_in_error_WHEN_error_string_changed_THEN_less_than_four_log_message_per_pv_logged_in_five_secs(
self):
self._lewis.backdoor_set_on_device("out_error", "OLD_ERROR")
self._set_error_state(True)
new_error = "A_NEW_ERROR"
# Actually expect 3 messages but checking for 4 as a buffer see comment above
with assert_log_messages(self._ioc, self.NUM_OF_PVS * 4, 5) as log:
self._lewis.backdoor_set_on_device("out_error", new_error)
self.assertTrue(any([new_error in _ for _ in log.messages[-3:]]))
def test_GIVEN_setpoint_is_at_600Hz_and_device_already_running_WHEN_send_run_command_THEN_device_does_not_break(
self):
self._turn_on_bearings_and_run()
self.ca.set_pv_value("SPEED:SP", 600)
self.ca.assert_that_pv_is_number("SPEED", 600, tolerance=0.1)
with assert_log_messages(self._ioc,
in_time=2,
must_contain=ErrorStrings.TURN_ON_AT_600HZ):
self.ca.set_pv_value("COMMAND:SP", 3) # Switch drive on and run
def test_WHEN_electronics_temperature_is_too_high_THEN_switch_drive_off_is_sent(
self):
# Reset last command so that we can tell that it's changed later on
self._lewis.backdoor_set_on_device("last_command", "0000")
self.ca.assert_that_pv_is("LASTCOMMAND", "0000")
with assert_log_messages(
self._ioc,
in_time=5,
must_contain=ErrorStrings.ELECTRONICS_TEMP_TOO_HIGH):
# Temperature = 46, this is higher than the allowed value (45)
self._lewis.backdoor_set_on_device("electronics_temp", 46)
# Assert that "switch drive off" was sent
self.ca.assert_that_pv_is("LASTCOMMAND", "0002")
def test_WHEN_chopper_speed_is_too_high_THEN_switch_drive_off_is_sent(
self):
self._lewis.backdoor_set_on_device("magneticbearing", True)
self.ca.assert_that_pv_is("STATUS.B3", "1")
# Reset last command so that we can tell that it's changed later on
self._lewis.backdoor_set_on_device("last_command", "0000")
self.ca.assert_that_pv_is("LASTCOMMAND", "0000")
with assert_log_messages(self._ioc,
in_time=2,
must_contain=ErrorStrings.SOFTWARE_OVERSPEED):
# Speed = 610, this is higher than the maximum allowed speed (606)
self._lewis.backdoor_set_on_device("speed", 610)
# Assert that "switch drive off" was sent
self.ca.assert_that_pv_is("LASTCOMMAND", "0002")
def test_WHEN_chopper_speed_is_too_high_THEN_status_updates(self):
too_fast = 700
# Turn on magnetic bearings otherwise device will report it is broken
self._lewis.backdoor_set_on_device("magneticbearing", True)
self.ca.assert_that_pv_is("STATUS.B3", "1")
with assert_log_messages(
self._ioc,
in_time=2,
must_contain=ErrorStrings.CONTROLLER_OVERSPEED):
self._lewis.backdoor_set_on_device("speed", too_fast)
self.ca.assert_that_pv_is("STATUS.BA", "1")
self._lewis.backdoor_set_on_device("speed", 0)
self.ca.assert_that_pv_is("STATUS.BA", "0")
def test_WHEN_emulator_disconnected_THEN_data_in_alarm_and_valid_on_reconnect(
self):
self.ca.assert_that_pv_alarm_is_not("DATA",
ChannelAccess.Alarms.INVALID)
self.emulator.disconnect_device()
self.ca.assert_that_pv_alarm_is("DATA", ChannelAccess.Alarms.INVALID)
# Check we don't get excessive numbers of messages if we stay disconnected for 15s (up to 15 messages seems
# reasonable - 1 per second on average)
with assert_log_messages(self._ioc, number_of_messages=15):
sleep(15)
# Double-check we are still in alarm
self.ca.assert_that_pv_alarm_is("DATA",
ChannelAccess.Alarms.INVALID)
self.emulator.reconnect_device()
self.ca.assert_that_pv_alarm_is_not("DATA",
ChannelAccess.Alarms.INVALID,
timeout=5)
self.ca.assert_that_pv_value_is_changing("DATA", 1)
def test_GIVEN_magnetic_bearing_is_off_WHEN_chopper_speed_is_moving_THEN_switch_drive_on_and_stop_is_sent(
self):
# Magnetic bearings should have been turned off in setUp
self.ca.assert_that_pv_is("STATUS.B3", "0")
# Reset last command so that we can tell that it's changed later on
self._lewis.backdoor_set_on_device("last_command", "0000")
self.ca.assert_that_pv_is("LASTCOMMAND", "0000")
with assert_log_messages(
self._ioc,
in_time=2,
must_contain=ErrorStrings.CHOPPER_AT_SPEED_WITH_BEARINGS_OFF):
# Speed = 7 because that's higher than the threshold in the IOC (5)
# but lower than the threshold in the emulator (10)
self._lewis.backdoor_set_on_device("speed", 7)
# Assert that "switch drive on and stop" was sent
self.ca.assert_that_pv_is("LASTCOMMAND", "0001")
def test_GIVEN_autozero_voltages_are_out_of_range_WHEN_chopper_is_moving_THEN_range_check_fails(
self):
for number, position in itertools.product([1, 2], ["upper", "lower"]):
self.ca.assert_that_pv_is("AUTOZERO:RANGECHECK", 0)
with assert_log_messages(self._ioc,
in_time=2,
must_contain=ErrorStrings.
CONTROLLER_AUTOZERO_OUT_OF_RANGE):
# Set autozero voltage too high
self._lewis.backdoor_set_on_device(
"autozero_{n}_{p}".format(n=number, p=position), 3.2)
# Assert
self.ca.assert_that_pv_is("AUTOZERO:RANGECHECK", 1)
# Reset relevant autozero voltage back to zero
self._lewis.backdoor_set_on_device(
"autozero_{n}_{p}".format(n=number, p=position), 0)
self.ca.assert_that_pv_is_number("AUTOZERO:{n}:{p}".format(
n=number, p=position.upper()),
0,
tolerance=0.1)
def test_GIVEN_autozero_voltages_are_out_of_range_WHEN_chopper_is_moving_THEN_switch_drive_on_and_stop_is_sent(
self):
for number, position in itertools.product([1, 2], ["upper", "lower"]):
err = None
for i in range(10): # Try up to 10 times.
try:
self._lewis.backdoor_run_function_on_device("reset")
# Assert that the last command is zero as expected
self.ca.assert_that_pv_is("LASTCOMMAND", "0000")
# Check that the last command is not being set to something else by the IOC
self.ca.assert_that_pv_value_is_unchanged("LASTCOMMAND",
wait=10)
break
except AssertionError as e:
err = e
else: # no-break
raise err
with assert_log_messages(
self._ioc,
in_time=2,
must_contain=ErrorStrings.SOFTWARE_AUTOZERO_OUT_OF_RANGE):
# Set autozero voltage too high and set device moving
self._lewis.backdoor_set_on_device(
"autozero_{n}_{p}".format(n=number, p=position), 3.2)
self._lewis.backdoor_set_on_device("speed", 7)
# Assert that "switch drive on and stop" was sent
self.ca.assert_that_pv_is("LASTCOMMAND", "0001")
# Reset relevant autozero voltage back to zero
self._lewis.backdoor_set_on_device(
"autozero_{n}_{p}".format(n=number, p=position), 0)
self.ca.assert_that_pv_is_number("AUTOZERO:{n}:{p}".format(
n=number, p=position.upper()),
0,
tolerance=0.1)
def test_GIVEN_in_error_WHEN_error_cleared_THEN_less_than_two_log_message_per_pv_logged(
self):
self._set_error_state(True)
# Actually expect 1 message but checking for 2 as a buffer see comment above
with assert_log_messages(self._ioc, self.NUM_OF_PVS * 2):
self._set_error_state(False)