Add `test_process_withdrawals` no-op test

tests/core/pyspec/eth2spec/test/eip4844/block_processing/test_process_withdrawals.py

@@ -0,0 +1,57 @@
+
+from eth2spec.test.context import spec_state_test, expect_assertion_error, with_eip4844_and_later
+from eth2spec.test.helpers.execution_payload import (
+    build_empty_execution_payload,
+)
+from eth2spec.test.helpers.state import next_slot
+
+
+def prepare_withdrawal_queue(spec, state, num_withdrawals):
+    pre_queue_len = len(state.withdrawal_queue)
+
+    for i in range(num_withdrawals):
+        withdrawal = spec.Withdrawal(
+            index=i + 5,
+            address=b'\x42' * 20,
+            amount=200000 + i,
+        )
+        state.withdrawal_queue.append(withdrawal)
+
+    assert len(state.withdrawal_queue) == num_withdrawals + pre_queue_len
+
+
+def run_withdrawals_processing(spec, state, execution_payload, valid=True):
+    """
+    Run ``process_execution_payload``, yielding:
+      - pre-state ('pre')
+      - execution payload ('execution_payload')
+      - post-state ('post').
+    If ``valid == False``, run expecting ``AssertionError``
+    """
+    pre_state = state.copy()
+
+    yield 'pre', state
+    yield 'execution_payload', execution_payload
+
+    if not valid:
+        expect_assertion_error(lambda: spec.process_withdrawals(state, execution_payload))
+        yield 'post', None
+        return
+
+    spec.process_withdrawals(state, execution_payload)
+
+    yield 'post', state
+
+    # Make sure state has NOT been changed
+    assert state == pre_state
+
+
+@with_eip4844_and_later
+@spec_state_test
+def test_no_op(spec, state):
+    prepare_withdrawal_queue(spec, state, 1)
+
+    next_slot(spec, state)
+    execution_payload = build_empty_execution_payload(spec, state)
+
+    yield from run_withdrawals_processing(spec, state, execution_payload)

tests/core/pyspec/eth2spec/test/eip4844/epoch_processing/test_process_partial_withdrawals.py

@@ -36,7 +36,7 @@ def run_process_partial_withdrawals_no_op(spec, state, num_expected_withdrawals=
 
 @with_eip4844_and_later
 @spec_state_test
-def test_success_one_partial_withdrawable(spec, state):
+def test_no_op(spec, state):
     validator_index = len(state.validators) // 2
     set_validator_partially_withdrawable(spec, state, validator_index)