fix(vm): Bytecode comparison

docs/CHANGELOG.md

@@ -52,6 +52,7 @@ Test fixtures for use by clients are available for each release on the [Github r
 - ✨ Improve `fill` terminal output to emphasize that filling tests is not actually testing a client ([#807](https://github.com/ethereum/execution-spec-tests/pull/887)).
 - ✨ Add the `BlockchainTestEngine` test spec type that only generates a fixture in the `EngineFixture` (`blockchain_test_engine`) format ([#888](https://github.com/ethereum/execution-spec-tests/pull/888)).
 - 🔀 `ethereum_test_forks` forks now contain gas-calculating functions, which return the appropriate function to calculate the gas used by a transaction or memory function for the given fork ([#779](https://github.com/ethereum/execution-spec-tests/pull/779)).
+- 🐞 Fix `Bytecode` class `__eq__` method ([#939](https://github.com/ethereum/execution-spec-tests/pull/939)).
 
 ### 🔧 EVM Tools
 

src/ethereum_test_vm/bytecode.py

@@ -117,9 +117,17 @@ def __eq__(self, other):
         - NotImplementedError: if the comparison is not between an Bytecode
             or a bytes object.
         """
+        if isinstance(other, Bytecode):
+            return (
+                bytes(self) == bytes(other)
+                and self.popped_stack_items == other.popped_stack_items
+                and self.pushed_stack_items == other.pushed_stack_items
+                and self.max_stack_height == other.max_stack_height
+                and self.min_stack_height == other.min_stack_height
+            )
         if isinstance(other, SupportsBytes):
             return bytes(self) == bytes(other)
-        raise NotImplementedError(f"Unsupported type for comparison f{type(other)}")
+        raise NotImplementedError(f"Unsupported type for comparison: {type(other)}")
 
     def __hash__(self):
         """