package/python-dbus-fast: new package

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: James Hilliard <james.hilliard1@gmail.com>
[yann.morin.1998@free.fr:
  - select host-cython in Config.in
  - introduce obj_path in test sample
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

support/testing/tests/package/sample_python_dbus_fast.py

@@ -0,0 +1,45 @@
+import asyncio
+from dbus_fast.aio import MessageBus
+from dbus_fast.service import ServiceInterface, method
+import dbus_fast.introspection as intr
+from dbus_fast import BusType
+
+
+class SampleInterface(ServiceInterface):
+    def __init__(self):
+        super().__init__('test.interface')
+
+    @method()
+    def Ping(self):
+        pass
+
+    @method()
+    def ConcatStrings(self, what1: 's', what2: 's') -> 's':  # noqa: F821
+        return what1 + what2
+
+
+async def main():
+    bus_name = 'dbus.fast.sample'
+    obj_path = '/test/path'
+
+    bus = await MessageBus(bus_type=BusType.SYSTEM).connect()
+    bus2 = await MessageBus(bus_type=BusType.SYSTEM).connect()
+
+    await bus.request_name(bus_name)
+
+    service_interface = SampleInterface()
+    bus.export(obj_path, service_interface)
+
+    introspection = await bus2.introspect(bus_name, obj_path)
+    assert type(introspection) is intr.Node
+    obj = bus2.get_proxy_object(bus_name, obj_path, introspection)
+    interface = obj.get_interface(service_interface.name)
+
+    result = await interface.call_ping()
+    assert result is None
+
+    result = await interface.call_concat_strings('hello ', 'world')
+    assert result == 'hello world'
+
+
+asyncio.run(main())