Add tests for batched HFP commands/responses; reformat

bumble/hfp.py

@@ -818,7 +818,9 @@ class HfProtocol(pyee.EventEmitter):
             elif response.code in UNSOLICITED_CODES:
                 self.unsolicited_queue.put_nowait(response)
             else:
-                logger.warning(f"dropping unexpected response with code '{response.code}'")
+                logger.warning(
+                    f"dropping unexpected response with code '{response.code}'"
+                )
 
     async def execute_command(
         self,
@@ -1245,6 +1247,7 @@ class AgProtocol(pyee.EventEmitter):
         # Append to the read buffer.
         self.read_buffer.extend(data)
 
+        while self.read_buffer:
             # Locate the trailer.
             trailer = self.read_buffer.find(b'\r')
             if trailer == -1:

tests/hfp_test.py

@@ -569,6 +569,38 @@ async def test_sco_setup():
     await asyncio.gather(*sco_disconnection_futures)
 
 
+# -----------------------------------------------------------------------------
+@pytest.mark.asyncio
+async def test_hf_batched_response(
+    hfp_connections: Tuple[hfp.HfProtocol, hfp.AgProtocol]
+):
+    hf, ag = hfp_connections
+
+    ag.send_response = lambda str: None
+    ag.dlc.write(b'\r\n+BIND: (1,2)\r\n\r\nOK\r\n')
+
+    await hf.execute_command("AT+BIND=?", response_type=hfp.AtResponseType.SINGLE)
+
+
+# -----------------------------------------------------------------------------
+@pytest.mark.asyncio
+async def test_ag_batched_commands(
+    hfp_connections: Tuple[hfp.HfProtocol, hfp.AgProtocol]
+):
+    hf, ag = hfp_connections
+
+    answer_future = asyncio.get_running_loop().create_future()
+    ag.on('answer', lambda: answer_future.set_result(None))
+
+    hang_up_future = asyncio.get_running_loop().create_future()
+    ag.on('hang_up', lambda: hang_up_future.set_result(None))
+
+    hf.dlc.write(b'ATA\rAT+CHUP\r')
+
+    await answer_future
+    await hang_up_future
+
+
 # -----------------------------------------------------------------------------
 async def run():
     await test_slc()