async def test_standard_interfaces():
bus = await MessageBus().connect()
msg = Message(destination='org.freedesktop.DBus',
path='/org/freedesktop/DBus',
interface='org.freedesktop.DBus',
member='ListNames',
serial=bus.next_serial())
reply = await bus.call(msg)
assert reply.message_type == MessageType.METHOD_RETURN
assert reply.reply_serial == msg.serial
assert reply.signature == 'as'
assert bus.unique_name in reply.body[0]
msg.interface = 'org.freedesktop.DBus.Introspectable'
msg.member = 'Introspect'
msg.serial = bus.next_serial()
reply = await bus.call(msg)
assert reply.message_type == MessageType.METHOD_RETURN
assert reply.reply_serial == msg.serial
assert reply.signature == 's'
assert type(reply.body[0]) is str
msg.member = 'MemberDoesNotExist'
msg.serial = bus.next_serial()
reply = await bus.call(msg)
assert reply.message_type == MessageType.ERROR
assert reply.reply_serial == msg.serial
assert reply.error_name
assert reply.signature == 's'
assert type(reply.body[0]) is str
async def test_sending_messages_between_buses():
bus1 = await MessageBus().connect()
bus2 = await MessageBus().connect()
msg = Message(destination=bus1.unique_name,
path='/org/test/path',
interface='org.test.iface',
member='SomeMember',
serial=bus2.next_serial())
def message_handler(sent):
if sent.sender == bus2.unique_name and sent.serial == msg.serial:
assert sent.path == msg.path
assert sent.serial == msg.serial
assert sent.interface == msg.interface
assert sent.member == msg.member
bus1.send(Message.new_method_return(sent, 's', ['got it']))
bus1.remove_message_handler(message_handler)
return True
bus1.add_message_handler(message_handler)
reply = await bus2.call(msg)
assert reply.message_type == MessageType.METHOD_RETURN
assert reply.sender == bus1.unique_name
assert reply.signature == 's'
assert reply.body == ['got it']
assert reply.reply_serial == msg.serial
def message_handler_error(sent):
if sent.sender == bus2.unique_name and sent.serial == msg.serial:
assert sent.path == msg.path
assert sent.serial == msg.serial
assert sent.interface == msg.interface
assert sent.member == msg.member
bus1.send(
Message.new_error(sent, 'org.test.Error', 'throwing an error'))
bus1.remove_message_handler(message_handler_error)
return True
bus1.add_message_handler(message_handler_error)
msg.serial = bus2.next_serial()
reply = await bus2.call(msg)
assert reply.message_type == MessageType.ERROR
assert reply.sender == bus1.unique_name
assert reply.reply_serial == msg.serial
assert reply.error_name == 'org.test.Error'
assert reply.signature == 's'
assert reply.body == ['throwing an error']
msg.serial = bus2.next_serial()
msg.flags = MessageFlag.NO_REPLY_EXPECTED
reply = await bus2.call(msg)
assert reply is None