chore(tests): add conftests to zkevm & bls subdirs to apply zkevm marker (ethereum#1534)

* chore(tests): add conftests to zkevm & bls subdirs to apply zkevm marker

* docs: update changelog

Author: danceratopz

docs/CHANGELOG.md

@@ -22,6 +22,8 @@ Test fixtures for use by clients are available for each release on the [Github r
 
 ### 🧪 Test Cases
 
+- 🔀 Automatically apply the `zkevm` marker to all tests under `./tests/zkevm/` and `./tests/prague/eip2537_bls_12_381_precompiles/` via conftest configuration ([#1534](https://github.com/ethereum/execution-spec-tests/pull/1534)).
+
 ## [v4.4.0](https://github.com/ethereum/execution-spec-tests/releases/tag/v4.4.0) - 2025-04-29
 
 ### 💥 Breaking Change

tests/prague/eip2537_bls_12_381_precompiles/conftest.py

@@ -1,5 +1,6 @@
 """Shared pytest definitions local to EIP-2537 tests."""
 
+from pathlib import Path
 from typing import SupportsBytes
 
 import pytest
@@ -12,6 +13,13 @@
 from .spec import GAS_CALCULATION_FUNCTION_MAP
 
 
+def pytest_collection_modifyitems(config, items):
+    """Add the `zkevm` marker to all tests in `./tests/prague/eip2537_bls_12_381_precompiles`."""
+    for item in items:
+        if Path(__file__).parent in Path(item.fspath).parents:
+            item.add_marker(pytest.mark.zkevm)
+
+
 @pytest.fixture
 def vector_gas_value() -> int | None:
     """

tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g1add.py

@@ -18,7 +18,6 @@
 pytestmark = [
     pytest.mark.valid_from("Prague"),
     pytest.mark.parametrize("precompile_address", [Spec.G1ADD], ids=[""]),
-    pytest.mark.zkevm,
 ]
 
 

tests/zkevm/conftest.py

@@ -0,0 +1,12 @@
+"""Pytest configuration for zkEVM tests."""
+
+from pathlib import Path
+
+import pytest
+
+
+def pytest_collection_modifyitems(config, items):
+    """Add the `zkevm` marker to all tests under `./tests/zkevm`."""
+    for item in items:
+        if Path(__file__).parent in Path(item.fspath).parents:
+            item.add_marker(pytest.mark.zkevm)

tests/zkevm/test_worst_bytecode.py

@@ -35,7 +35,6 @@
 XOR_TABLE = [Hash(i).sha256() for i in range(XOR_TABLE_SIZE)]
 
 
-@pytest.mark.zkevm
 @pytest.mark.parametrize(
     "opcode",
     [

tests/zkevm/test_worst_compute.py

@@ -20,7 +20,6 @@
 KECCAK_RATE = 136
 
 
-@pytest.mark.zkevm
 @pytest.mark.valid_from("Cancun")
 @pytest.mark.parametrize(
     "gas_limit",