From ae32725a78048dcacc24582eff66adc4ed44fea2 Mon Sep 17 00:00:00 2001
From: Sean Stewart <sean_stewart@me.com>
Date: Sun, 7 Jul 2024 09:26:14 -0400
Subject: [PATCH] chore: rename `format.py` to `interchange.py`

---
 src/typelib/{format.py => interchange.py}          | 9 ++++++++-
 tests/unit/{test_format.py => test_interchange.py} | 7 +++++--
 2 files changed, 13 insertions(+), 3 deletions(-)
 rename src/typelib/{format.py => interchange.py} (76%)
 rename tests/unit/{test_format.py => test_interchange.py} (95%)

diff --git a/src/typelib/format.py b/src/typelib/interchange.py
similarity index 76%
rename from src/typelib/format.py
rename to src/typelib/interchange.py
index f240bf3..def149f 100644
--- a/src/typelib/format.py
+++ b/src/typelib/interchange.py
@@ -3,7 +3,7 @@
 import dataclasses
 import typing as tp
 
-from typelib import classes, compat
+from typelib import classes, compat, inspection
 from typelib import codec as mcodec
 from typelib import marshal as mmarshal
 from typelib import unmarshal as munmarshal
@@ -21,6 +21,13 @@ def protocol(
 ) -> InterchangeProtocol[T]:
     marshal = marshaller or mmarshal.marshaller(typ=t)
     unmarshal = unmarshaller or munmarshal.unmarshaller(typ=t)
+    if inspection.isbytestype(t) and codec is None:
+        codec = mcodec.Codec(
+            marshaller=marshal,
+            unmarshaller=unmarshal,
+            encoder=lambda v: v,  # type: ignore[arg-type,return-value]
+            decoder=lambda v: v,  # type: ignore[arg-type,return-value]
+        )
     codec = codec or mcodec.Codec(
         marshaller=marshal,
         unmarshaller=unmarshal,
diff --git a/tests/unit/test_format.py b/tests/unit/test_interchange.py
similarity index 95%
rename from tests/unit/test_format.py
rename to tests/unit/test_interchange.py
index f88ac5e..4e94ee9 100644
--- a/tests/unit/test_format.py
+++ b/tests/unit/test_interchange.py
@@ -7,7 +7,7 @@
 import uuid
 
 import pytest
-from typelib import compat, format, refs
+from typelib import compat, interchange, refs
 
 from tests import models
 
@@ -175,10 +175,13 @@ def test_protocol(
     given_type, given_input, expected_unmarshal_output, expected_marshal_output
 ):
     # Given
-    proto = format.protocol(given_type)
+    proto = interchange.protocol(given_type)
     # When
     unmarshal_output = proto.unmarshal(given_input)
     marshal_output = proto.marshal(unmarshal_output)
+    encode_output = proto.codec.encode(unmarshal_output)
+    decode_output = proto.codec.decode(encode_output)
     # Then
     assert unmarshal_output == expected_unmarshal_output
     assert marshal_output == expected_marshal_output
+    assert decode_output == expected_unmarshal_output