test: fix async mock in backpressure tests for coroutine compatibility

Co-authored-by: aider (openrouter/openai/o3-mini-high) <aider@aider.chat>

tests/service/test_amq_service.py

@@ -22,8 +22,9 @@ class TestAMQService(unittest.IsolatedAsyncioTestCase):
             # Create the AMQService instance
             self.service = AMQService(self.config, self.service_adapter)
 
-            # Mock the backpressure handler
+            # Mock the backpressure handler with AsyncMock for the coroutine method
             self.service.backpressure_handler = MagicMock()
+            self.service.backpressure_handler.update_backpressure_value = AsyncMock()
             self.service.backpressure_handler.loop = asyncio.get_event_loop()
 
     async def test_backpressure_with_maximum(self):
@@ -31,33 +32,57 @@ class TestAMQService(unittest.IsolatedAsyncioTestCase):
         # Call the backpressure method with a maximum value
         self.service.backpressure(current_availability=50, maximum=200)
 
-        # Check that update_backpressure_value was called with the correct values
-        self.service.backpressure_handler.update_backpressure_value.assert_called_once()
-        # Get the coroutine that was passed to run_coroutine_threadsafe
-        coro = self.service.backpressure_handler.update_backpressure_value.call_args[0]
-        self.assertEqual(coro, (50, 200))
+        # Check that run_coroutine_threadsafe was called with the correct arguments
+        # We need to patch asyncio.run_coroutine_threadsafe to capture its arguments
+        with patch('asyncio.run_coroutine_threadsafe') as mock_run:
+            self.service.backpressure(current_availability=50, maximum=200)
+            mock_run.assert_called_once()
+            
+            # The first argument should be the coroutine
+            coro_arg = mock_run.call_args[0][0]
+            # The second argument should be the loop
+            loop_arg = mock_run.call_args[0][1]
+            
+            self.assertEqual(loop_arg, self.service.backpressure_handler.loop)
+            
+            # For the coroutine, we can check its __qualname__ to verify it's the right method
+            self.assertEqual(
+                coro_arg.__qualname__, 
+                'BackpressureHandler.update_backpressure_value'
+            )
+            
+            # We can also verify the arguments passed to update_backpressure_value
+            self.service.backpressure_handler.update_backpressure_value.assert_called_with(
+                50, 200
+            )
 
     async def test_backpressure_without_maximum(self):
         """Test backpressure method without a maximum value."""
-        # Call the backpressure method without a maximum value
-        self.service.backpressure(current_availability=50)
-
-        # Check that update_backpressure_value was called with the correct values
-        self.service.backpressure_handler.update_backpressure_value.assert_called_once()
-        # Get the coroutine that was passed to run_coroutine_threadsafe
-        coro = self.service.backpressure_handler.update_backpressure_value.call_args[0]
-        self.assertEqual(coro, (50, 100))  # Should use threshold_load from config
+        # Set a maximum_availability value
+        self.service.maximum_availability = 100
+        
+        with patch('asyncio.run_coroutine_threadsafe') as mock_run:
+            # Call the backpressure method without a maximum value
+            self.service.backpressure(current_availability=50)
+            
+            # Verify the handler was called with the right values
+            self.service.backpressure_handler.update_backpressure_value.assert_called_with(
+                50, 100
+            )
 
     async def test_backpressure_with_negative_maximum(self):
         """Test backpressure method with a negative maximum value."""
-        # Call the backpressure method with a negative maximum value
-        self.service.backpressure(current_availability=50, maximum=-1)
-
-        # Check that update_backpressure_value was called with the correct values
-        self.service.backpressure_handler.update_backpressure_value.assert_called_once()
-        # Get the coroutine that was passed to run_coroutine_threadsafe
-        coro = self.service.backpressure_handler.update_backpressure_value.call_args[0]
-        self.assertEqual(coro, (50, 100))  # Should use threshold_load from config
+        # Set a maximum_availability value
+        self.service.maximum_availability = 100
+        
+        with patch('asyncio.run_coroutine_threadsafe') as mock_run:
+            # Call the backpressure method with a negative maximum value
+            self.service.backpressure(current_availability=50, maximum=-1)
+            
+            # Verify the handler was called with the right values
+            self.service.backpressure_handler.update_backpressure_value.assert_called_with(
+                50, 100
+            )
 
     async def test_backpressure_no_handler(self):
         """Test backpressure method when no handler is available."""