new(tests): EIP-7702: Set code of non-empty-storage account (#948)

* fix(plugins/filler): More accurate nonce in `fund_eoa` for edge-case

* new(tests): EIP-7702: test_set_code_to_non_empty_storage

* docs: changelog

Author: marioevz

docs/CHANGELOG.md

@@ -16,6 +16,7 @@ Test fixtures for use by clients are available for each release on the [Github r
 - 💥 `PragueEIP7692` fork in tests has been updated to `Osaka` ([#869](https://github.com/ethereum/execution-spec-tests/pull/869))
 - ✨ Update [EIP-6110](https://eips.ethereum.org/EIPS/eip-6110), [EIP-7002](https://eips.ethereum.org/EIPS/eip-7002), [EIP-7251](https://eips.ethereum.org/EIPS/eip-7251), [EIP-7685](https://eips.ethereum.org/EIPS/eip-7685), and [EIP-7702](https://eips.ethereum.org/EIPS/eip-7702) tests for Devnet-4 ([#832](https://github.com/ethereum/execution-spec-tests/pull/832))
 - ✨ [EIP-7702](https://eips.ethereum.org/EIPS/eip-7702) many delegations test ([#923](https://github.com/ethereum/execution-spec-tests/pull/923))
+- ✨ [EIP-7702](https://eips.ethereum.org/EIPS/eip-7702) set code of non-empty-storage account test ([#948](https://github.com/ethereum/execution-spec-tests/pull/948))
 
 ### 🛠️ Framework
 

src/pytest_plugins/filler/pre_alloc.py

@@ -228,7 +228,12 @@ def fund_eoa(
                 # Type-4 transaction is sent to the EOA to set the storage, so the nonce must be 1
                 if not isinstance(delegation, Address) and delegation == "Self":
                     delegation = eoa
-                nonce = Number(1 if nonce is None else nonce)
+                # If delegation is None but storage is not, realistically the nonce should be 2
+                # because the account must have delegated to set the storage and then again to
+                # reset the delegation (but can be overridden by the test for a non-realistic
+                # scenario)
+                real_nonce = 2 if delegation is None else 1
+                nonce = Number(real_nonce if nonce is None else nonce)
                 account = Account(
                     nonce=nonce,
                     balance=amount,

tests/prague/eip7702_set_code_tx/test_set_code_txs.py

@@ -216,6 +216,66 @@ def test_set_code_to_sstore(
     )
 
 
+@pytest.mark.parametrize(
+    "auth_signer_nonce",
+    [
+        pytest.param(
+            0,
+            id="zero_nonce",
+            marks=pytest.mark.execute(pytest.mark.skip("unrealistic scenario")),
+        ),
+        pytest.param(None, id="non_zero_nonce"),
+    ],
+)
+def test_set_code_to_non_empty_storage(
+    state_test: StateTestFiller,
+    pre: Alloc,
+    auth_signer_nonce: int,
+):
+    """
+    Test the setting the code to an account that has non-empty storage.
+    """
+    auth_signer = pre.fund_eoa(
+        amount=0,
+        storage=Storage({0: 1}),  # type: ignore
+        nonce=auth_signer_nonce,
+    )
+    sender = pre.fund_eoa()
+
+    set_code = Op.SSTORE(0, Op.ADD(Op.SLOAD(0), 1)) + Op.STOP
+    set_code_to_address = pre.deploy_contract(
+        set_code,
+    )
+
+    tx = Transaction(
+        gas_limit=500_000,
+        to=auth_signer,
+        value=0,
+        authorization_list=[
+            AuthorizationTuple(
+                address=set_code_to_address,
+                nonce=auth_signer.nonce,
+                signer=auth_signer,
+            ),
+        ],
+        sender=sender,
+    )
+
+    state_test(
+        env=Environment(),
+        pre=pre,
+        tx=tx,
+        post={
+            set_code_to_address: Account(
+                storage={},
+            ),
+            auth_signer: Account(
+                storage={0: 2},
+            ),
+        },
+    )
+
+
 def test_set_code_to_sstore_then_sload(
     blockchain_test: BlockchainTestFiller,
     pre: Alloc,