fix: static tests broke due to rebase

Author: Carsons-Eels

packages/testing/src/execution_testing/forks/forks/forks.py

@@ -99,6 +99,7 @@ def _base_gas_costs(
         """
         Return dataclass with the defined gas costs constants for genesis.
         """
+        del block_number, timestamp
         return GasCosts(
             GAS_JUMPDEST=1,
             GAS_BASE=2,

packages/testing/src/execution_testing/forks/transition_base_fork.py

@@ -2,7 +2,7 @@
 
 from typing import Any, Callable, ClassVar, Dict, Type
 
-from .base_fork import BaseFork
+from .base_fork import BaseFork, GasCosts
 
 
 class TransitionBaseMetaClass(type):
@@ -119,6 +119,17 @@ def with_env_gas_limit(
         new_cls._env_gas_limit = env_gas_limit  # type: ignore[attr-defined]
         return new_cls
 
+    @classmethod
+    def gas_costs(
+        cls, *, block_number: int = 0, timestamp: int = 0
+    ) -> GasCosts:
+        """
+        Return Gas Costs for the active fork.
+        """
+        return cls.fork_at(
+            block_number=block_number, timestamp=timestamp
+        ).gas_costs(block_number=block_number, timestamp=timestamp)
+
 
 def transition_fork(
     to_fork: Type[BaseFork],