add long read self test

bumble/gatt.py

@@ -320,6 +320,12 @@ class CharacteristicAdapter:
     def __getattr__(self, name):
         return getattr(self.wrapped_characteristic, name)
 
+    def __setattr__(self, name, value):
+        if name in {'wrapped_characteristic', 'read_value', 'write_value', 'subscribe'}:
+            super().__setattr__(name, value)
+        else:
+            setattr(self.wrapped_characteristic, name, value)
+
     def read_encoded_value(self, connection):
         return self.encode_value(self.wrapped_characteristic.read_value(connection))
 
@@ -343,6 +349,10 @@ class CharacteristicAdapter:
             None if subscriber is None else lambda value: subscriber(self.decode_value(value))
         )
 
+    def __str__(self):
+        wrapped = str(self.wrapped_characteristic)
+        return f'{self.__class__.__name__}({wrapped})'
+
 
 # -----------------------------------------------------------------------------
 class DelegatedCharacteristicAdapter(CharacteristicAdapter):

bumble/gatt_server.py

@@ -545,13 +545,13 @@ class Server(EventEmitter):
             value = attribute.read_value(connection)
             if request.value_offset > len(value):
                 response = ATT_Error_Response(
-                    request_opcode_in_error = request.op_code,
+                    request_opcode_in_error   = request.op_code,
                     attribute_handle_in_error = request.attribute_handle,
                     error_code                = ATT_INVALID_OFFSET_ERROR
                 )
             elif len(value) <= mtu - 1:
                 response = ATT_Error_Response(
-                    request_opcode_in_error = request.op_code,
+                    request_opcode_in_error   = request.op_code,
                     attribute_handle_in_error = request.attribute_handle,
                     error_code                = ATT_ATTRIBUTE_NOT_LONG_ERROR
                 )

bumble/hci.py

@@ -3276,6 +3276,9 @@ class HCI_Event(HCI_Packet):
         parameters = b'' if self.parameters is None else self.parameters
         return bytes([HCI_EVENT_PACKET, self.event_code, len(parameters)]) + parameters
 
+    def __bytes__(self):
+        return self.to_bytes()
+
     def __str__(self):
         result = color(self.name, 'magenta')
         if fields := getattr(self, 'fields', None):