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# SPDX-FileCopyrightText: All Contributors to the PyTango project
# SPDX-License-Identifier: LGPL-3.0-or-later
import pytest
from tango import (
AttrWriteType,
DevFailed,
DeviceData,
DeviceDataList,
DevState,
Group,
GroupAttrReply,
GroupCmdReply,
GroupReply,
StdStringVector,
)
from tango.server import Device, attribute, command
from tango.test_context import MultiDeviceTestContext
from tango.utils import TO_TANGO_TYPE
_is_allowed = [True]
class SimpleDevice(Device):
_attr = None
def init_device(self):
self._attr = int(self.get_name()[-1])
super().init_device()
self.set_state(DevState.ON)
@attribute(access=AttrWriteType.READ_WRITE)
def attr(self) -> int:
return self._attr
@attr.setter
def set_attr(self, new_value):
self._attr = new_value
@attr.is_allowed
def is_allowed(self, req) -> bool:
return _is_allowed[0]
@command()
def indent(self, v_in: int) -> int:
return v_in
def is_indent_allowed(self) -> bool:
return _is_allowed[0]
devices_info = (
{
"class": SimpleDevice,
"devices": [{"name": "test/device/1"}, {"name": "test/device/2"}],
},
)
@pytest.fixture(scope="module")
def context():
with MultiDeviceTestContext(devices_info) as ctx:
yield ctx
def test_wrong_device_name(context):
group = Group("test_group")
group.add("test/device/1")
with pytest.raises(KeyError, match="some/wrong/device"):
group.get_device("some/wrong/device")
with pytest.raises(KeyError, match="some/wrong/device"):
group["some/wrong/device"]
def test_nested_multi_group(context):
group_singles = Group("add-one-at-a-time")
group_singles.add("test/device/1")
group_singles.add("test/device/2")
group_multiples_list = Group("add-multiple-via-list")
group_multiples_list.add(["test/device/1", "test/device/2"])
group_multiples_vector = Group("add-multiple-via-std-vector")
vector = StdStringVector()
vector.append("test/device/1")
vector.append("test/device/2")
group_multiples_vector.add(vector)
group_in_group = Group("add-sub-group")
group_in_group.add(group_singles)
groups = [
group_singles,
group_multiples_list,
group_multiples_vector,
group_in_group,
]
device1_fqdn = context.get_device_access("test/device/1")
device2_fqdn = context.get_device_access("test/device/2")
for group in groups:
assert device1_fqdn in group
assert device2_fqdn in group
reply = group.read_attribute("attr")
assert reply[0].dev_name() == device1_fqdn
assert reply[1].dev_name() == device2_fqdn
assert not reply[0].has_failed()
assert not reply[1].has_failed()
assert reply[0].get_data().value == 1
assert reply[1].get_data().value == 2
# patterns are not supported via DeviceTestContext
with pytest.raises(DevFailed):
group_multiples_pattern = Group("add-multiple-via-pattern")
group_multiples_pattern.add("test/device/*")
def test_read_write_attribute(context):
_is_allowed[0] = True
group = Group("test_group")
group.add("test/device/1")
group.add("test/device/2")
seq = group.write_attribute("attr", 3)
for ret in seq:
assert not ret.has_failed()
assert isinstance(ret, GroupReply)
seq = group.read_attribute("attr")
for ret in seq:
assert not ret.has_failed()
assert ret.get_data().value == 3
# we check, that we can read value for the second time
assert ret.get_data().value == 3
assert isinstance(ret, GroupAttrReply)
# now we check that we can iterate over GroupReplyList for the second time
for ret in seq:
assert not ret.has_failed()
assert ret.get_data().value == 3
assert ret.get_data().value == 3
assert isinstance(ret, GroupAttrReply)
dev = group.get_device(1)
attr_info = dev.get_attribute_config("attr")
seq = group.write_attribute(attr_info, 4)
for ret in seq:
assert not ret.has_failed()
assert isinstance(ret, GroupReply)
seq = group.read_attribute("attr")
for ret in seq:
assert not ret.has_failed()
assert ret.get_data().value == 4
_is_allowed[0] = False
for ret in group.write_attribute("attr", 5):
assert ret.has_failed()
assert (
ret.get_err_stack()[0].desc
== "It is currently not allowed to write attribute attr. The device state is ON"
)
for ret in group.read_attribute("attr"):
assert ret.has_failed()
assert (
ret.get_err_stack()[0].desc
== "It is currently not allowed to read attribute attr"
)
def test_command(context):
_is_allowed[0] = True
group = Group("test_group")
group.add("test/device/1")
group.add("test/device/2")
seq = group.command_inout("indent", 1)
for ret in seq:
assert not ret.has_failed()
assert ret.get_data() == 1
# we check, that we can read value for the second time
assert ret.get_data() == 1
assert isinstance(ret, GroupCmdReply)
# now we check that we can iterate over GroupReplyList for the second time
for ret in seq:
assert not ret.has_failed()
assert ret.get_data() == 1
assert ret.get_data() == 1
assert isinstance(ret, GroupCmdReply)
param = DeviceData()
param.insert(TO_TANGO_TYPE[int], 1)
seq = group.command_inout("indent", param)
for ret in seq:
assert not ret.has_failed()
assert ret.get_data() == 1
param_list = DeviceDataList()
param_list.extend([param, param])
seq = group.command_inout("indent", param_list)
for ret in seq:
assert not ret.has_failed()
assert ret.get_data() == 1
_is_allowed[0] = False
for ret in group.command_inout("indent", 2):
assert ret.has_failed()
assert (
ret.get_err_stack()[0].desc
== "Command indent not allowed when the device is in ON state"
)
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