fix: serialized HexBytes for Any types in ContractLog (#2308)

src/ape/types/__init__.py

@@ -1,4 +1,4 @@
-from collections.abc import Callable, Iterator, Sequence
+from collections.abc import Callable, Iterable, Iterator, Sequence
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Annotated, Any, Literal, Optional, TypeVar, Union, cast, overload
 
@@ -265,7 +265,28 @@ def _serialize_event_arguments(self, event_arguments, info):
         (https://github.com/pydantic/pydantic/issues/10152)
         we have to ensure these are regular ints.
         """
-        return {k: int(v) if isinstance(v, int) else v for k, v in event_arguments.items()}
+        return self._serialize_value(event_arguments, info)
+
+    def _serialize_value(self, value: Any, info) -> Any:
+        if isinstance(value, int):
+            # Handle custom ints.
+            return int(value)
+
+        elif isinstance(value, HexBytes):
+            return to_hex(value) if info.mode == "json" else value
+
+        elif isinstance(value, str):
+            # Avoiding str triggering iterable condition.
+            return value
+
+        elif isinstance(value, dict):
+            # Also, avoid handling dict in the iterable case.
+            return {k: self._serialize_value(v, info) for k, v in value.items()}
+
+        elif isinstance(value, Iterable):
+            return [self._serialize_value(v, info) for v in value]
+
+        return value
 
 
 class ContractLog(ExtraAttributesMixin, BaseContractLog):
@@ -291,6 +312,10 @@ class ContractLog(ExtraAttributesMixin, BaseContractLog):
     Is `None` when from the pending block.
     """
 
+    @field_serializer("transaction_hash", "block_hash")
+    def _serialize_hashes(self, value, info):
+        return self._serialize_value(value, info)
+
     # NOTE: This class has an overridden `__getattr__` method, but `block` is a reserved keyword
     #       in most smart contract languages, so it is safe to use. Purposely avoid adding
     #       `.datetime` and `.timestamp` in case they are used as event arg names.

tests/functional/test_contract_event.py

@@ -4,6 +4,8 @@
 
 import pytest
 from eth_pydantic_types import HexBytes
+from eth_pydantic_types.hash import HashBytes20
+from eth_utils import to_hex
 from ethpm_types import ContractType
 
 from ape.api import ReceiptAPI
@@ -382,3 +384,42 @@ def test_model_dump(solidity_contract_container, owner):
     # This next assertion is important because of this Pydantic bug:
     # https://github.com/pydantic/pydantic/issues/10152
     assert not isinstance(actual["newNum"], CurrencyValueComparable)
+
+
+@pytest.mark.parametrize("mode", ("python", "json"))
+def test_model_dump_hexbytes(mode):
+    # NOTE: There was an issue when using HexBytes for Any.
+    event_arguments = {"key": 123, "validators": [HexBytes(123)]}
+    txn_hash = HashBytes20.__eth_pydantic_validate__(347374237412374174)
+    event = ContractLog(
+        block_number=123,
+        block_hash="block-hash",
+        event_arguments=event_arguments,
+        event_name="MyEvent",
+        log_index=0,
+        transaction_hash=txn_hash,
+    )
+    actual = event.model_dump(mode=mode)
+    expected_hash = txn_hash if mode == "python" else to_hex(txn_hash)
+    assert actual["transaction_hash"] == expected_hash
+
+
+def test_model_dump_json():
+    # NOTE: There was an issue when using HexBytes for Any.
+    event_arguments = {"key": 123, "validators": [HexBytes(123)]}
+    event = ContractLog(
+        block_number=123,
+        block_hash="block-hash",
+        event_arguments=event_arguments,
+        event_name="MyEvent",
+        log_index=0,
+        transaction_hash=HashBytes20.__eth_pydantic_validate__(347374237412374174),
+    )
+    actual = event.model_dump_json()
+    assert actual == (
+        '{"block_hash":"block-hash","block_number":123,'
+        '"contract_address":"0x0000000000000000000000000000000000000000",'
+        '"event_arguments":{"key":123,"validators":["0x7b"]},"event_name":'
+        '"MyEvent","log_index":0,'
+        '"transaction_hash":"0x00000000000000000000000004d21f074916369e"}'
+    )