Add missing gateway result codes and add tests for it

The test verifies that all of the error codes defined in the currently
used protobuf definition can be converted to the internal
GateayResultCode enum (in case some of them are forgotten to be added
here).

Author: sgunes-wirepas

tests/test_gateway_result_code.py

@@ -0,0 +1,15 @@
+# flake8: noqa
+
+import pytest
+
+from wirepas_mesh_messaging.proto import ErrorCode
+from wirepas_mesh_messaging import GatewayResultCode
+
+@pytest.mark.parametrize("protobuf_result_code", ErrorCode.items())
+def test_decoding_errors(protobuf_result_code):
+    name, value = protobuf_result_code
+    try:
+        GatewayResultCode(value)
+    except ValueError as e:
+        raise ValueError(f"{name} is not defined in GatewayResultCode") from e
+

wirepas_mesh_messaging/gateway_result_code.py

@@ -50,3 +50,5 @@ class GatewayResultCode(enum.Enum):
     GW_RES_INVALID_MAX_HOP_COUNT = INVALID_MAX_HOP_COUNT
     GW_RES_SINK_OUT_OF_MEMORY = SINK_OUT_OF_MEMORY
     GW_RES_SINK_TIMEOUT = SINK_TIMEOUT
+    GW_RES_INVALID_SCRATCHPAD_CHUNK_OFFSET = INVALID_SCRATCHPAD_CHUNK_OFFSET
+    GW_RES_INVALID_SCRATCHPAD_CHUNK_SIZE = INVALID_SCRATCHPAD_CHUNK_SIZE