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import os
from collections.abc import Generator
from unittest.mock import patch
import pytest
from dbus_fast.constants import ErrorType, MessageType
from dbus_fast.errors import DBusError
from dbus_fast.message import Message
from dbus_fast.message_bus import BaseMessageBus
from dbus_fast.send_reply import SendReply
@pytest.fixture(autouse=True)
def mock_address() -> Generator[None, None, None]:
original_address = os.environ.get("DBUS_SESSION_BUS_ADDRESS")
os.environ["DBUS_SESSION_BUS_ADDRESS"] = "unix:path=/dev/null"
yield
if original_address is None:
del os.environ["DBUS_SESSION_BUS_ADDRESS"]
else:
os.environ["DBUS_SESSION_BUS_ADDRESS"] = original_address
def test_send_reply_exception() -> None:
"""Test that SendReply sends an error message when DBusError is raised."""
messages: list[Message] = []
class MockClosable:
def close(self) -> None:
pass
class MockBus(BaseMessageBus):
def send(self, msg: Message) -> None:
messages.append(msg)
def send_message(self, msg: Message) -> None:
messages.append(msg)
def _setup_socket(self) -> None:
self._sock = MockClosable() # type: ignore
self._stream = MockClosable() # type: ignore
with patch("socket.socket.connect"):
mock_message_bus = MockBus()
mock_message = Message(
path="/test/path", interface="test.interface", member="test_member", serial=1
)
send_reply = SendReply(mock_message_bus, mock_message)
with send_reply:
raise DBusError(ErrorType.DISCONNECTED, "Disconnected", None)
assert len(messages) == 1
assert messages[0].message_type == MessageType.ERROR
assert messages[0].error_name == "org.freedesktop.DBus.Error.Disconnected"
assert messages[0].reply_serial == 1
mock_message_bus.disconnect()
mock_message_bus._finalize(None)
def test_send_reply_happy_path() -> None:
"""Test that SendReply sends a message."""
messages: list[Message] = []
class MockClosable:
def close(self) -> None:
pass
class MockBus(BaseMessageBus):
def send(self, msg: Message) -> None:
messages.append(msg)
def send_message(self, msg: Message) -> None:
messages.append(msg)
def _setup_socket(self) -> None:
self._sock = MockClosable() # type: ignore
self._stream = MockClosable() # type: ignore
with patch("socket.socket.connect"):
mock_message_bus = MockBus()
mock_message = Message(
path="/test/path", interface="test.interface", member="test_member", serial=1
)
send_reply = SendReply(mock_message_bus, mock_message)
with send_reply as reply:
reply(mock_message)
assert len(messages) == 1
assert messages[0].message_type == MessageType.METHOD_CALL
assert messages[0].error_name is None
mock_message_bus.disconnect()
mock_message_bus._finalize(None)
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