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5 changed files with 0 additions and 115 deletions

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from dataclasses import dataclass
from typing import Optional, Collection, Any
from abc import abstractmethod
class DeviceLifecycleState:
pass # TODO(Homework #3)
class DevaceError(Exception):
pass
class NonReadableTrait(Exception):
pass
class NonWritableTrait(Exception):
pass
@dataclass
class TraitDescriptor:
name: str
info: Optional[str] = None
readable: bool = True
writable: bool = False
@dataclass
class ActionDescriptor:
name: str
arguments: dict[str, type]
info: Optional[str] = None
class Device:
# TODO(Homework #3)
_state = DeviceLifecycleState.INIT
@property
def state(self) -> DeviceLifecycleState:
return self._state
def close(self):
self._state = DeviceLifecycleState.CLOSE
def trait_descriptors(self) -> Collection[TraitDescriptor]:
pass
def action_descriptors(self) -> Collection[ActionDescriptor]:
pass
@abstractmethod
def __getitem__(self, trait_name: str) -> Optional[Any]:
"""Return logical state of trait `trait_name`."""
pass
class SynchronyDevice(Device):
def open(self):
self._state = DeviceLifecycleState.OPEN
@abstractmethod
def execute(self, action_name: str, *args, **kwargs):
"""Execute action `action_name`, using `args` and `kwargs` as action argument."""
pass
@abstractmethod
def read(self, trait_name: str) -> Any:
"""Read physical state of trait `trait_name` from device."""
raise NonReadableTrait
@abstractmethod
def write(self, trait_name: str, value: Any) -> bool:
"""Pass `value` to trait `trait_name` of device."""
raise NonWritableTrait
@abstractmethod
def invalidate(self, trait_name: str):
"""Invalidate logical state of trait `trait_name`"""
pass

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from turtle import Turtle
from controls.device import SynchronyDevice
class TurtleDevice(SynchronyDevice):
pass # TODO(Homework #3)

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from unittest import TestCase
from controls.device import DeviceLifecycleState
class DeviceLifecycleStateTest(TestCase):
def setUp(self) -> None:
pass
def test_enum(self):
self.assertEqual(DeviceLifecycleStateTest["INIT"], DeviceLifecycleStateTest.INIT)

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from unittest import TestCase
from equipment.turtle_device import TurtleDevice
class TurtleDeviceTest(TestCase):
def setUp(self) -> None:
self.device = TurtleDevice()
def test_open(self):
self.device.open()
self.device.close()