def test_fix_and_release(self, session, log):
"""Check fix() and release() commands."""
motor = session.getDevice('motor')
move(motor, 0)
fix(motor)
move(motor, 10)
stop(motor)
release(motor)
assert motor.curvalue == 0
assert raises(UsageError, release)
assert raises(UsageError, release, ())
assert raises(UsageError, unfix, ())
def set_flipper_off():
"""Shut down flippers.
After shutting down the neutrons are guided through instrument for
image mode (MIEZE)
"""
ps = ['sf_0a', 'sf_0b', 'cbox_0a_fg_amp', 'cbox_0b_fg_amp']
reg = ['cbox_0a_reg_amp', 'cbox_0b_reg_amp']
for powersupply in ps:
powersupply = session.getDevice(powersupply)
move(powersupply, 0.01)
for regulator in reg:
regulator = session.getDevice(regulator)
stop(regulator)
def zero():
"""Shut down all (static) power supplies."""
ps = [
'hrf_0a', 'hrf_0b', 'hrf_1a', 'hrf_1b', 'hsf_0a', 'hsf_0b', 'hsf_1',
'sf_0a', 'sf_0b', 'sf_1', 'gf1', 'gf2', 'gf4', 'gf5', 'gf6', 'gf7',
'gf8', 'gf9', 'gf10', 'nse0', 'nse1'
]
for powersupply in ps:
powersupply = session.getDevice(powersupply)
move(powersupply, 0.001)
wait()
# Stop regulation and turn fg_amp off
stop('cbox_0a_reg_amp', 'cbox_0b_reg_amp', 'cbox_1_reg_amp')
maw('cbox_0a_fg_amp', 0.001, 'cbox_0b_fg_amp', 0.001, 'cbox_1_fg_amp',
0.001)
def test_stop_privileged(self, session, log):
# Change the user level to lower access rights to check that the stop
# on higher level requesting devices will be ignored
AddSetup('device')
motor = session.getDevice('motor')
pdev = session.getDevice('privdev')
speed = pdev.speed
pdev.speed = motor.speed = 0.1
move(pdev, 10, motor, 10)
with session.withUserLevel(GUEST):
assert pdev.status(0)[0] == devstatus.BUSY
assert motor.status(0)[0] == devstatus.BUSY
assert raises(AccessError, pdev.stop)
stop(pdev, motor)
wait(motor)
assert motor.status(0)[0] == devstatus.OK
assert pdev.status(0)[0] == devstatus.BUSY
stop(pdev)
wait(pdev)
assert pdev.status(0)[0] == devstatus.OK
pdev.speed = motor.speed = speed
def test_read(self, session, log):
"""Check read() command."""
motor = session.getDevice('motor')
coder = session.getDevice('coder')
exp = session.getDevice('Exp')
tdev = session.getDevice('tdev')
tdev._status_exception = NicosError('expected failed status')
tdev._read_exception = NicosError('expected failed read')
read()
read(motor, coder)
with log.assert_errors(r'expected failed read'):
read(tdev)
assert raises(UsageError, read, exp)
# ensure that target != position to generate a read message containing
# a 'target' entry
s = motor.speed
motor.speed = 0.1
move(motor, 1)
stop(motor)
with log.assert_msg_matches(r'target'):
read(motor)
motor.speed = s
def test_stop(self, session, log):
"""Check stop() command."""
motor = session.getDevice('motor')
tdev = session.getDevice('tdev')
tdev._stop_exception = NicosError('expected failed stop')
stop()
with log.assert_warns('expected failed stop'):
stop(motor, tdev)
# check stop moving motor
move(motor, 10)
stop(motor)
def immediateStop(self):
self.log.warning('stopping all devices for immediate stop')
from nicos.commands.device import stop
stop()
