test: encode bytes to a list of integers for testing

tests/__init__.py

@@ -0,0 +1 @@
+from .utils import BytesToIntListEncoder

tests/test_scdms_v8.py

@@ -8,13 +8,19 @@
 
 import awkward_kaitai
 
+from . import BytesToIntListEncoder
+
 
 def test_scdms_v8():
     reader = awkward_kaitai.Reader("test_artifacts/libscdms_v8.so")
     awkward_array = reader.load("example_data/data/scdms_v8.mid")
 
+    parsed_array = json.loads(
+        json.dumps(awkward_array.to_list()[0], cls=BytesToIntListEncoder)
+    )
+
     with gzip.open("tests/scdms_v8.json.gz", "rb") as f:
         expected_content = json.load(f)
 
     # it was list of 1 element, so saved only the element into JSON
-    assert awkward_array.to_list()[0] == expected_content
+    assert parsed_array == expected_content

tests/utils.py

@@ -0,0 +1,13 @@
+import json
+import numpy as np
+
+
+class BytesToIntListEncoder(json.JSONEncoder):
+    """Allows encoding of a bytestring to JSON by turning it into
+    a list of `uint8`"""
+
+    def default(self, o):
+        if isinstance(o, bytes):
+            return np.frombuffer(o, dtype=np.uint8).tolist()
+        else:
+            return super().default(o)