add node.ping command (#220)

Author: raman325

test/model/test_node.py

@@ -203,6 +203,23 @@ async def test_poll_value(multisensor_6, uuid4, mock_command):
     }
 
 
+async def test_ping(multisensor_6, uuid4, mock_command):
+    """Test ping."""
+    node = multisensor_6
+    ack_commands = mock_command(
+        {"command": "node.ping", "nodeId": node.node_id},
+        {"responded": True},
+    )
+    assert await node.async_ping()
+
+    assert len(ack_commands) == 1
+    assert ack_commands[0] == {
+        "command": "node.ping",
+        "nodeId": node.node_id,
+        "messageId": uuid4,
+    }
+
+
 async def test_refresh_info(multisensor_6, uuid4, mock_command):
     """Test refresh info."""
     node = multisensor_6

zwave_js_server/model/node.py

@@ -445,6 +445,16 @@ async def async_poll_value(self, val: Union[Value, str]) -> None:
             val = self.values[val]
         await self.async_send_command("poll_value", valueId=val.data, require_schema=1)
 
+    async def async_ping(self) -> bool:
+        """Send ping command to Node."""
+        data = (
+            await self.async_send_command(
+                "ping", require_schema=5, wait_for_result=True
+            )
+            or {}
+        )
+        return cast(bool, data.get("responded", False))
+
     def handle_wake_up(self, event: Event) -> None:
         """Process a node wake up event."""
         # pylint: disable=unused-argument