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from dbus_next.service import ServiceInterface, dbus_property, PropertyAccess
from dbus_next.signature import Variant
from dbus_next.aio import MessageBus
from dbus_next import Message, MessageType, introspection as intr
from dbus_next.constants import ErrorType
import pytest
standard_interfaces_count = len(intr.Node.default().interfaces)
class ExampleInterface(ServiceInterface):
def __init__(self, name):
super().__init__(name)
class ExampleComplexInterface(ServiceInterface):
def __init__(self, name):
self._foo = 42
self._bar = 'str'
self._async_prop = 'async'
super().__init__(name)
@dbus_property(access=PropertyAccess.READ)
def Foo(self) -> 'y':
return self._foo
@dbus_property(access=PropertyAccess.READ)
def Bar(self) -> 's':
return self._bar
@dbus_property(access=PropertyAccess.READ)
async def AsyncProp(self) -> 's':
return self._async_prop
@pytest.mark.asyncio
async def test_introspectable_interface():
bus1 = await MessageBus().connect()
bus2 = await MessageBus().connect()
interface = ExampleInterface('test.interface')
interface2 = ExampleInterface('test.interface2')
export_path = '/test/path'
bus1.export(export_path, interface)
bus1.export(export_path, interface2)
reply = await bus2.call(
Message(destination=bus1.unique_name,
path=export_path,
interface='org.freedesktop.DBus.Introspectable',
member='Introspect'))
assert reply.message_type == MessageType.METHOD_RETURN, reply.body[0]
assert reply.signature == 's'
node = intr.Node.parse(reply.body[0])
assert len(node.interfaces) == standard_interfaces_count + 2
assert node.interfaces[-1].name == 'test.interface2'
assert node.interfaces[-2].name == 'test.interface'
assert not node.nodes
# introspect works on every path
reply = await bus2.call(
Message(destination=bus1.unique_name,
path='/path/doesnt/exist',
interface='org.freedesktop.DBus.Introspectable',
member='Introspect'))
assert reply.message_type == MessageType.METHOD_RETURN, reply.body[0]
assert reply.signature == 's'
node = intr.Node.parse(reply.body[0])
assert not node.interfaces
assert not node.nodes
@pytest.mark.asyncio
async def test_peer_interface():
bus1 = await MessageBus().connect()
bus2 = await MessageBus().connect()
reply = await bus2.call(
Message(destination=bus1.unique_name,
path='/path/doesnt/exist',
interface='org.freedesktop.DBus.Peer',
member='Ping'))
assert reply.message_type == MessageType.METHOD_RETURN, reply.body[0]
assert reply.signature == ''
reply = await bus2.call(
Message(destination=bus1.unique_name,
path='/path/doesnt/exist',
interface='org.freedesktop.DBus.Peer',
member='GetMachineId',
signature=''))
assert reply.message_type == MessageType.METHOD_RETURN, reply.body[0]
assert reply.signature == 's'
@pytest.mark.asyncio
async def test_object_manager():
expected_reply = {
'/test/path/deeper': {
'test.interface2': {
'Bar': Variant('s', 'str'),
'Foo': Variant('y', 42),
'AsyncProp': Variant('s', 'async'),
}
}
}
reply_ext = {
'/test/path': {
'test.interface1': {},
'test.interface2': {
'Bar': Variant('s', 'str'),
'Foo': Variant('y', 42),
'AsyncProp': Variant('s', 'async'),
}
}
}
bus1 = await MessageBus().connect()
bus2 = await MessageBus().connect()
interface = ExampleInterface('test.interface1')
interface2 = ExampleComplexInterface('test.interface2')
export_path = '/test/path'
bus1.export(export_path, interface)
bus1.export(export_path, interface2)
bus1.export(export_path + '/deeper', interface2)
reply_root = await bus2.call(
Message(destination=bus1.unique_name,
path='/',
interface='org.freedesktop.DBus.ObjectManager',
member='GetManagedObjects'))
reply_level1 = await bus2.call(
Message(destination=bus1.unique_name,
path=export_path,
interface='org.freedesktop.DBus.ObjectManager',
member='GetManagedObjects'))
reply_level2 = await bus2.call(
Message(destination=bus1.unique_name,
path=export_path + '/deeper',
interface='org.freedesktop.DBus.ObjectManager',
member='GetManagedObjects'))
assert reply_root.signature == 'a{oa{sa{sv}}}'
assert reply_level1.signature == 'a{oa{sa{sv}}}'
assert reply_level2.signature == 'a{oa{sa{sv}}}'
assert reply_level2.body == [{}]
assert reply_level1.body == [expected_reply]
expected_reply.update(reply_ext)
assert reply_root.body == [expected_reply]
@pytest.mark.asyncio
async def test_standard_interface_properties():
# standard interfaces have no properties, but should still behave correctly
# when you try to call the methods anyway (#49)
bus1 = await MessageBus().connect()
bus2 = await MessageBus().connect()
interface = ExampleInterface('test.interface1')
export_path = '/test/path'
bus1.export(export_path, interface)
for iface in [
'org.freedesktop.DBus.Properties', 'org.freedesktop.DBus.Introspectable',
'org.freedesktop.DBus.Peer', 'org.freedesktop.DBus.ObjectManager'
]:
result = await bus2.call(
Message(destination=bus1.unique_name,
path=export_path,
interface='org.freedesktop.DBus.Properties',
member='Get',
signature='ss',
body=[iface, 'anything']))
assert result.message_type is MessageType.ERROR
assert result.error_name == ErrorType.UNKNOWN_PROPERTY.value
result = await bus2.call(
Message(destination=bus1.unique_name,
path=export_path,
interface='org.freedesktop.DBus.Properties',
member='Set',
signature='ssv',
body=[iface, 'anything', Variant('s', 'new thing')]))
assert result.message_type is MessageType.ERROR
assert result.error_name == ErrorType.UNKNOWN_PROPERTY.value
result = await bus2.call(
Message(destination=bus1.unique_name,
path=export_path,
interface='org.freedesktop.DBus.Properties',
member='GetAll',
signature='s',
body=[iface]))
assert result.message_type is MessageType.METHOD_RETURN
assert result.body == [{}]
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