pubsub: remove subscribe args, more broadcast args

Remove the subscribe time args, as they weren't used.
With that flexibility we can add many args at broadcast time.

subiquitycore/pubsub.py

@@ -26,17 +26,15 @@ class MessageHub:
     def __init__(self):
         self.subscriptions = {}
 
-    def subscribe(self, channel, method, *args):
-        self.subscriptions.setdefault(channel, []).append((method, args))
+    def subscribe(self, channel, method):
+        self.subscriptions.setdefault(channel, []).append(method)
 
-    async def abroadcast(self, channel, data=None):
-        for m, args in self.subscriptions.get(channel, []):
-            if data:
-                args = [data] + list(args)
-            v = m(*args)
+    async def abroadcast(self, channel, *args, **kwargs):
+        for m in self.subscriptions.get(channel, []):
+            v = m(*args, **kwargs)
             if inspect.iscoroutine(v):
                 await v
 
-    def broadcast(self, channel, data=None):
+    def broadcast(self, channel, *args, **kwargs):
         loop = asyncio.get_event_loop()
-        return loop.create_task(self.abroadcast(channel, data))
+        return loop.create_task(self.abroadcast(channel, *args, **kwargs))

subiquitycore/tests/test_pubsub.py

@@ -13,42 +13,38 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+from unittest.mock import MagicMock
+
 from subiquitycore.tests import SubiTestCase
 from subiquitycore.pubsub import MessageHub
 from subiquitycore.tests.util import run_coro
 
 
 class TestMessageHub(SubiTestCase):
-    def test_basic(self):
-        def cb(actual_private):
-            self.assertEqual(private_data, actual_private)
-            nonlocal actual_calls
-            actual_calls += 1
+    def setUp(self):
+        self.hub = MessageHub()
 
-        actual_calls = 0
+    def test_multicall(self):
+        cb = MagicMock()
         expected_calls = 3
         channel_id = 1234
-        private_data = 42
-        hub = MessageHub()
         for _ in range(expected_calls):
-            hub.subscribe(channel_id, cb, private_data)
-        run_coro(hub.abroadcast(channel_id))
-        self.assertEqual(expected_calls, actual_calls)
+            self.hub.subscribe(channel_id, cb)
+        run_coro(self.hub.abroadcast(channel_id))
+        self.assertEqual(expected_calls, cb.call_count)
+
+    def test_multisubscriber(self):
+        cbs = [MagicMock() for _ in range(4)]
+        channel_id = 2345
+        for cb in cbs:
+            self.hub.subscribe(channel_id, cb)
+        run_coro(self.hub.abroadcast(channel_id))
+        for cb in cbs:
+            cb.assert_called_once_with()
 
     def test_message_arg(self):
-        def cb(zero, one, two, three, *args):
-            self.assertEqual(broadcast_data, zero)
-            self.assertEqual(1, one)
-            self.assertEqual('two', two)
-            self.assertEqual([3], three)
-            self.assertEqual(0, len(args))
-            nonlocal called
-            called = True
-
-        called = False
+        cb = MagicMock()
         channel_id = 'test-message-arg'
-        broadcast_data = 'broadcast-data'
-        hub = MessageHub()
-        hub.subscribe(channel_id, cb, 1, 'two', [3])
-        run_coro(hub.abroadcast(channel_id, broadcast_data))
-        self.assertTrue(called)
+        self.hub.subscribe(channel_id, cb)
+        run_coro(self.hub.abroadcast(channel_id, '0', 1, 'two', [3], four=4))
+        cb.assert_called_once_with('0', 1, 'two', [3], four=4)