nimbus-eth1/tests/test_vm_json.nim

94 lines
3.7 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, strformat, strutils, sequtils, tables, json, ospaths, times,
stew/byteutils, stew/ranges/typedranges, eth/[rlp, common], eth/trie/db,
./test_helpers, ../nimbus/vm/interpreter,
../nimbus/[constants, errors, vm_state, vm_types, utils],
../nimbus/db/[db_chain, state_db]
proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus)
proc vmJsonMain*() =
suite "vm json tests":
jsonTest("VMTests", testFixture)
proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus) =
var fixture: JsonNode
for label, child in fixtures:
fixture = child
break
let fenv = fixture["env"]
var emptyRlpHash = keccakHash(rlp.encode(""))
let header = BlockHeader(
coinbase: fenv{"currentCoinbase"}.getStr.parseAddress,
difficulty: fromHex(UInt256, fenv{"currentDifficulty"}.getStr),
blockNumber: fenv{"currentNumber"}.getHexadecimalInt.u256,
gasLimit: fenv{"currentGasLimit"}.getHexadecimalInt.GasInt,
timestamp: fenv{"currentTimestamp"}.getHexadecimalInt.int64.fromUnix,
stateRoot: emptyRlpHash
)
var vmState = newBaseVMState(emptyRlpHash, header, newBaseChainDB(newMemoryDB()))
let fexec = fixture["exec"]
var code: seq[byte]
vmState.mutateStateDB:
setupStateDB(fixture{"pre"}, db)
let address = fexec{"address"}.getStr.parseAddress
code = db.getCode(address).toSeq
code = fexec{"code"}.getStr.hexToSeqByte
let toAddress = fexec{"address"}.getStr.parseAddress
let message = newMessage(
to = toAddress,
sender = fexec{"caller"}.getStr.parseAddress,
value = cast[uint64](fexec{"value"}.getHexadecimalInt).u256, # Cast workaround for negative value
data = fexec{"data"}.getStr.hexToSeqByte,
code = code,
contractCreation = toAddress == ZERO_ADDRESS, # assume ZERO_ADDRESS is a contract creation
gas = fexec{"gas"}.getHexadecimalInt,
gasPrice = fexec{"gasPrice"}.getHexadecimalInt,
options = newMessageOptions(origin=fexec{"origin"}.getStr.parseAddress,
createAddress = toAddress))
var computation = newBaseComputation(vmState, header.blockNumber, message)
computation.executeOpcodes()
if not fixture{"post"}.isNil:
# Success checks
check(not computation.isError)
if computation.isError:
echo "Computation error: ", computation.error.info
let logEntries = computation.logEntries
if not fixture{"logs"}.isNil:
let actualLogsHash = hashLogEntries(logEntries)
let expectedLogsHash = toLowerAscii(fixture{"logs"}.getStr)
check(expectedLogsHash == actualLogsHash)
elif logEntries.len > 0:
checkpoint(&"Got log entries: {logEntries}")
fail()
let expectedOutput = fixture{"out"}.getStr
check(computation.outputHex == expectedOutput)
let gasMeter = computation.gasMeter
let expectedGasRemaining = fixture{"gas"}.getHexadecimalInt
let actualGasRemaining = gasMeter.gasRemaining
checkpoint(&"Remaining: {actualGasRemaining} - Expected: {expectedGasRemaining}")
check(actualGasRemaining == expectedGasRemaining)
if not fixture{"post"}.isNil:
verifyStateDb(fixture{"post"}, computation.vmState.readOnlyStateDB)
else:
# Error checks
check(computation.isError)
if not fixture{"pre"}.isNil:
verifyStateDb(fixture{"pre"}, computation.vmState.readOnlyStateDB)