121 lines
5.0 KiB
Nim
121 lines
5.0 KiB
Nim
# Nimbus
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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unittest, strformat, strutils, tables, json, ospaths, times,
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byteutils, ranges/typedranges, nimcrypto/[keccak, hash],
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rlp, eth_trie/db, eth_common,
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eth_keys,
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./test_helpers,
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../nimbus/[constants, errors],
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../nimbus/[vm_state, vm_types, vm_state_transactions],
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../nimbus/utils/[header, addresses],
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../nimbus/vm/interpreter,
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../nimbus/db/[db_chain, state_db]
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proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus)
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suite "generalstate json tests":
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jsonTest("GeneralStateTests", testFixture)
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proc testFixtureIndexes(header: BlockHeader, pre: JsonNode, transaction: Transaction, sender: EthAddress, expectedHash: string) =
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var vmState = newBaseVMState(header, newBaseChainDB(newMemoryDb()))
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vmState.mutateStateDB:
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setupStateDB(pre, db)
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defer:
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#echo vmState.readOnlyStateDB.dumpAccount("c94f5374fce5edbc8e2a8697c15331677e6ebf0b")
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doAssert "0x" & `$`(vmState.readOnlyStateDB.rootHash).toLowerAscii == expectedHash
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if not validateTransaction(vmState, transaction, sender):
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vmState.mutateStateDB:
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# pre-EIP158 (e.g., Byzantium) should ensure currentCoinbase exists
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# in later forks, don't create at all
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db.addBalance(header.coinbase, 0.u256)
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return
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# TODO: replace with cachingDb or similar approach; necessary
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# when calls/subcalls/etc come in, too.
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var readOnly = vmState.readOnlyStateDB
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let storageRoot = readOnly.getStorageRoot(transaction.to)
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let gas_cost = transaction.gasLimit.u256 * transaction.gasPrice.u256
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vmState.mutateStateDB:
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db.setNonce(sender, db.getNonce(sender) + 1)
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db.subBalance(sender, transaction.value + gas_cost)
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if transaction.isContractCreation and transaction.payload.len > 0:
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vmState.mutateStateDB:
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# TODO: move into applyCreateTransaction
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# fixtures/GeneralStateTests/stTransactionTest/TransactionSendingToZero.json
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# fixtures/GeneralStateTests/stTransactionTest/TransactionSendingToEmpty.json
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#db.addBalance(generateAddress(sender, transaction.accountNonce), transaction.value)
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let createGasUsed = applyCreateTransaction(db, transaction, vmState, sender, true)
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db.addBalance(header.coinbase, createGasUsed)
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return
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var computation = setupComputation(header, vmState, transaction, sender)
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vmState.mutateStateDB:
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# contract creation transaction.to == 0, so ensure happens after
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db.addBalance(transaction.to, transaction.value)
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# What remains is call and/or value transfer
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if execComputation(computation):
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let
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gasRemaining = computation.gasMeter.gasRemaining.u256
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gasRefunded = computation.gasMeter.gasRefunded.u256
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gasUsed = transaction.gasLimit.u256 - gasRemaining
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gasRefund = min(gasRefunded, gasUsed div 2)
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gasRefundAmount = (gasRefund + gasRemaining) * transaction.gasPrice.u256
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vmState.mutateStateDB:
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# TODO if the balance/etc calls were gated on gAFD or similar,
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# that would simplify/combine codepaths
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if header.coinbase notin computation.getAccountsForDeletion:
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db.subBalance(header.coinbase, gasRefundAmount)
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db.addBalance(header.coinbase, gas_cost)
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db.addBalance(sender, gasRefundAmount)
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# TODO: only here does one commit, with some nuance/caveat
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else:
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vmState.mutateStateDB:
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# XXX: the coinbase has to be committed; the rest are basically reverts
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db.subBalance(transaction.to, transaction.value)
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db.addBalance(sender, transaction.value)
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db.setStorageRoot(transaction.to, storageRoot)
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db.addBalance(header.coinbase, gas_cost)
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proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
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var fixture: JsonNode
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for label, child in fixtures:
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fixture = child
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break
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let fenv = fixture["env"]
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var emptyRlpHash = keccak256.digest(rlp.encode(""))
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let header = BlockHeader(
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coinbase: fenv["currentCoinbase"].getStr.ethAddressFromHex,
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difficulty: fromHex(UInt256, fenv{"currentDifficulty"}.getStr),
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blockNumber: fenv{"currentNumber"}.getHexadecimalInt.u256,
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gasLimit: fenv{"currentGasLimit"}.getHexadecimalInt.GasInt,
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timestamp: fenv{"currentTimestamp"}.getHexadecimalInt.int64.fromUnix,
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stateRoot: emptyRlpHash
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)
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let ftrans = fixture["transaction"]
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for expectation in fixture["post"]["Homestead"]:
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let
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expectedHash = expectation["hash"].getStr
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indexes = expectation["indexes"]
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dataIndex = indexes["data"].getInt
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gasIndex = indexes["gas"].getInt
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valueIndex = indexes["value"].getInt
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let transaction = ftrans.getFixtureTransaction(dataIndex, gasIndex, valueIndex)
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let sender = ftrans.getFixtureTransactionSender
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testFixtureIndexes(header, fixture["pre"], transaction, sender, expectedHash)
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