test: add EIP-7702 delegation transaction tests for pending state #281
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madisoncarter1234
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crates/rpc/tests/eip7702_tests.rs
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| use rollup_boost::{ExecutionPayloadBaseV1, ExecutionPayloadFlashblockDeltaV1}; | ||
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| // Test accounts from test_utils (Anvil deterministic keys) | ||
| const ALICE_ADDRESS: Address = address!("f39Fd6e51aad88F6F4ce6aB8827279cffFb92266"); |
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use self.harness.accounts instead of hardcoding accounts here
crates/rpc/tests/eip7702_tests.rs
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| const BOB_PRIVATE_KEY: &str = "59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d"; | ||
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| // Counter contract address (deployed in test payloads) | ||
| const COUNTER_ADDRESS: Address = address!("e7f1725e7734ce288f8367e1bb143e90bb3f0512"); |
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instead of hardcoding, make this part of the TestSetup. The address will change if new transactions were added at some point before the contract deployment as the nonce change will cause the contract address to change.
You can take a look at https://github.com/madisoncarter1234/node-reth/blob/4b7efcf0b8ddbfecf5d62c806976d8f534d34f86/crates/rpc/tests/eth_call_erc20.rs#L37 for reference
crates/rpc/tests/eip7702_tests.rs
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| const COUNTER_ADDRESS: Address = address!("e7f1725e7734ce288f8367e1bb143e90bb3f0512"); | ||
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| // Function selectors | ||
| const INCREMENT_SELECTOR: [u8; 4] = [0xd0, 0x9d, 0xe0, 0x8a]; // increment() |
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You should be able to get this from the autogenerated contract bindings as well. im away from my computer right now but the syntax is something like ContractName::incrementCall {}::abi_encode() or something
Just want to avoid hardcoding stuff like this as much as possible
crates/rpc/tests/eip7702_tests.rs
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| } | ||
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| /// Create a signer from a hex-encoded private key | ||
| fn create_signer(private_key: &str) -> PrivateKeySigner { |
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shouldnt be needed once you switch to harness.accounts
crates/rpc/tests/eip7702_tests.rs
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| setup.send_flashblock(base_payload).await?; | ||
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| // Create authorization for Alice to delegate to COUNTER_ADDRESS | ||
| let auth = build_authorization(chain_id, COUNTER_ADDRESS, 0, ALICE_PRIVATE_KEY); |
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This is a bit confusing. Why is Alice delegating to a Counter contract?
I would much prefer a new contract to be created if necessary - something like Minimal7702Account.sol or something - with autogenerated sol! bindings. Even if functionally it behaves similarly, it will help a lot with readability and understanding what's going on, plus if we do some actual 7702 wallet style code in the contract we should be able to then test some more smart-wallet-esque features as well (e.g. multicalls like appprove+transferFrom in a single txn)
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pending state Add tests for EIP-7702 authorization and delegation transactions in pending/flashblocks state per base#279. Tests: - Single delegation in pending flashblock - Multiple delegations in same flashblock - Receipt retrieval for EIP-7702 transactions - Delegation followed by execution across flashblocks test_eip7702_delegation_then_execution fails with overflow at state.rs:558 - this surfaces the sporadic behavior users reported. Closes base#279
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| /// Test EIP-7702 delegation followed by execution in subsequent flashblock. | ||
| /// | ||
| /// NOTE: This test is ignored because it surfaces a bug in the flashblocks processor | ||
| /// (overflow at processor.rs:472). This demonstrates the sporadic behavior reported | ||
| /// in issue #279. The test should be un-ignored once the underlying bug is fixed. | ||
| #[tokio::test] |
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Have you had a chance to dig into what the bug is and why it happens? It should probably be fixed as part of this PR if its not too crazy. I can also try taking a look later this week if its not straightforward
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Have you had a chance to dig into what the bug is and why it happens? It should probably be fixed as part of this PR if its not too crazy. I can also try taking a look later this week if its not straightforward
the problem is at processor.rs:472: gas_used: receipt.cumulative_gas_used() - gas_used, When multiple flashblocks belong to the same block, all their transactions get processed together with gas_used starting at 0.
the problem is the subtraction assumes cumulative gas values are monotonically increasing across all transactions in the block. In the test case (test_eip7702_delegation_then_execution), flashblock index 1 has cumulative 30000 and flashblock index 2 has cumulative 25000 - both for block 1.
So when processing:
- tx1: 30000 - 0 = 30000 ✓
- tx2: 25000 - 30000 = underflow
the fix is simple, just need to use saturating_sub or checked_sub there. adding to the pr
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That is not a 7702 bug then but rather the test is incorrect as it's not supplying cumulative gas usage correctly. Flashblock cumulative gas usage values must persist across flashblocks belonging to the same block. eceipt.cumulative_gas_used() - gas_used should never be underflowing
Use saturating_sub instead of subtraction when calculating per-transaction gas from cumulative gas values. When multiple flashblocks belong to the same block, subsequent flashblocks may have lower cumulative gas values than earlier ones, causing an arithmetic underflow. Fixes base#279
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Test plan
Closes #279