new(tests): Add EIP-6110 Sepolia Variant Contract test

Author: marioevz

tests/prague/eip6110_deposits/helpers.py

@@ -82,6 +82,33 @@ def calldata(self) -> bytes:
             + self.signature
         )
 
+    @cached_property
+    def log(self) -> bytes:
+        """
+        Returns the log data for the deposit event.
+
+        event DepositEvent(
+            bytes pubkey,
+            bytes withdrawal_credentials,
+            bytes amount,
+            bytes signature,
+            bytes index
+        );
+        """
+        return (
+            b"\0" * (192)
+            + self.pubkey
+            + b"\0" * (48)
+            + self.withdrawal_credentials
+            + b"\0" * (32)
+            + (self.amount).to_bytes(8, byteorder="little")
+            + b"\0" * (56)
+            + self.signature
+            + b"\0" * (32)
+            + (self.index).to_bytes(8, byteorder="little")
+            + b"\0" * (24)
+        )
+
     def with_source_address(self, source_address: Address) -> "DepositRequest":
         """Return a copy."""
         return self.copy()

tests/prague/eip6110_deposits/test_sepolia_contract.py

@@ -0,0 +1,78 @@
+"""Test sepolia variant logs contract."""
+
+from ethereum_test_tools import (
+    Account,
+    Alloc,
+    Block,
+    BlockchainTestFiller,
+    Header,
+    Requests,
+    Transaction,
+)
+from ethereum_test_tools import Macros as Om
+from ethereum_test_tools import Opcodes as Op
+
+from .helpers import DepositRequest
+from .spec import Spec, ref_spec_6110
+
+REFERENCE_SPEC_GIT_PATH = ref_spec_6110.git_path
+REFERENCE_SPEC_VERSION = ref_spec_6110.version
+
+
+def test_sepolia_extraneous_log(
+    blockchain_test: BlockchainTestFiller,
+    pre: Alloc,
+):
+    """Test sepolia variant logs contract."""
+    # Supplant mainnet contract with the Sepolia variant, which emits two logs, one of which
+    # has a different data length.
+    deposit_request = DepositRequest(
+        pubkey=0x01,
+        withdrawal_credentials=0x02,
+        amount=120_000_000_000_000_000,
+        signature=0x03,
+        index=0x0,
+    )
+
+    bytecode = (
+        Op.LOG1(
+            # ERC-20 token transfer log
+            0,
+            32,
+            0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF,
+        )
+        + Om.MSTORE(deposit_request.log)
+        + Op.LOG1(
+            0,
+            len(deposit_request.log),
+            0x649BBC62D0E31342AFEA4E5CD82D4049E7E1EE912FC0889AA790803BE39038C5,
+        )
+        + Op.STOP
+    )
+    assert len(deposit_request.log) == 576
+
+    pre[Spec.DEPOSIT_CONTRACT_ADDRESS] = Account(
+        code=bytecode,
+        nonce=1,
+        balance=0,
+    )
+    sender = pre.fund_eoa()
+
+    tx = Transaction(
+        to=Spec.DEPOSIT_CONTRACT_ADDRESS,
+        sender=sender,
+        gas_limit=100_000,
+    )
+
+    blockchain_test(
+        pre=pre,
+        blocks=[
+            Block(
+                txs=[tx],
+                header_verify=Header(
+                    requests_hash=Requests(deposit_request),
+                ),
+            ),
+        ],
+        post={},
+    )