nimbus-eth1/tests/test_opcode.nim

113 lines
4.3 KiB
Nim

# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import
unittest, tables, parseutils,
eth_trie/[types, memdb], eth_common/eth_types,
../nimbus/[constants, vm_types, logging],
../nimbus/vm/interpreter,
../nimbus/utils/header,
../nimbus/db/[db_chain, state_db, backends/memory_backend],
./test_helpers
from eth_common import GasInt
proc testCode(code: string, initialGas: GasInt, blockNum: UInt256): BaseComputation =
let header = BlockHeader(blockNumber: blockNum)
var memDb = newMemDB()
var vm = newNimbusVM(header, newBaseChainDB(trieDB memDb))
# coinbase: "",
# difficulty: fixture{"env"}{"currentDifficulty"}.getHexadecimalInt.u256,
# blockNumber: fixture{"env"}{"currentNumber"}.getHexadecimalInt.u256,
# gasLimit: fixture{"env"}{"currentGasLimit"}.getHexadecimalInt.u256,
# timestamp: fixture{"env"}{"currentTimestamp"}.getHexadecimalInt)
let message = newMessage(
to=ZERO_ADDRESS, #fixture{"exec"}{"address"}.getStr,
sender=ZERO_ADDRESS, #fixture{"exec"}{"caller"}.getStr,
value=0.u256,
data = @[],
code=code,
gas=initial_gas,
gasPrice=1) # What is this used for?
# gasPrice=fixture{"exec"}{"gasPrice"}.getHexadecimalInt.u256,
#options=newMessageOptions(origin=fixture{"exec"}{"origin"}.getStr))
#echo fixture{"exec"}
var c = newCodeStreamFromUnescaped(code)
if DEBUG:
c.displayDecompiled()
var computation = newBaseComputation(vm.state, message)
computation.opcodes = OpLogic # TODO remove this need
computation.precompiles = initTable[string, Opcode]()
computation = computation.applyComputation(vm.state, message)
result = computation
suite "opcodes":
test "add":
var c = testCode(
"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff01",
100_000,
0.u256
)
check(c.gasMeter.gasRemaining == 99_991)
check(c.stack.peek == "115792089237316195423570985008687907853269984665640564039457584007913129639934".u256)
# let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
# let code = "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff01600055".from_hex().unwrap();
# let mut params = ActionParams::default();
# params.address = address.clone();
# params.gas = U256::from(100_000);
# params.code = Some(Arc::new(code));
# let mut ext = FakeExt::new();
# let gas_left = {
# let mut vm = factory.create(params.gas);
# test_finalize(vm.exec(params, &mut ext)).unwrap()
# };
# assert_eq!(gas_left, U256::from(79_988));
# assert_store(&ext, 0, "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe");
# }
test "Frontier VM computation - pre-EIP150 gas cost properly applied":
block: # Using Balance (0x31)
var c = testCode(
"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff31",
100_000,
0.u256
)
check: c.gasMeter.gasRemaining == 100000 - 3 - 20 # Starting gas - push32 (verylow) - balance
block: # Using SLOAD (0x54)
var c = testCode(
"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff54",
100_000,
0.u256
)
check: c.gasMeter.gasRemaining == 100000 - 3 - 50 # Starting gas - push32 (verylow) - SLOAD
test "Tangerine VM computation - post-EIP150 gas cost properly applied":
block: # Using Balance (0x31)
var c = testCode(
"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff31",
100_000,
2_463_000.u256 # Tangerine block
)
check: c.gasMeter.gasRemaining == 100000 - 3 - 400 # Starting gas - push32 (verylow) - balance
block: # Using SLOAD (0x54)
var c = testCode(
"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff54",
100_000,
2_463_000.u256
)
check: c.gasMeter.gasRemaining == 100000 - 3 - 200 # Starting gas - push32 (verylow) - SLOAD