134 lines
5.1 KiB
Nim
134 lines
5.1 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, sequtils, tables, json, ospaths, times,
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byteutils, ranges/typedranges, nimcrypto/[keccak, hash],
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rlp, eth_trie/[types, memdb], eth_common,
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./test_helpers,
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../nimbus/[constants, errors, logging],
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../nimbus/[vm_state, vm_types],
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../nimbus/utils/[header, padding],
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../nimbus/vm/interpreter,
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../nimbus/db/[db_chain, state_db, backends/memory_backend]
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proc testFixture(fixtures: JsonNode, testStatusIMPL: var TestStatus)
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suite "vm json tests":
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jsonTest("VMTests", testFixture)
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proc stringFromBytes(x: ByteRange): string =
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result = newString(x.len)
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for i in 0 ..< x.len:
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result[i] = char(x[i])
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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("").toOpenArray)
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let header = BlockHeader(
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coinbase: fenv{"currentCoinbase"}.getStr.parseAddress,
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difficulty: fenv{"currentDifficulty"}.getHexadecimalInt.u256,
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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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var memDb = newMemDB()
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var vm = newNimbusVM(header, newBaseChainDB(trieDB memDb))
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let fexec = fixture["exec"]
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var code = ""
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vm.state.mutateStateDB:
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setupStateDB(fixture{"pre"}, db)
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let address = fexec{"address"}.getStr.parseAddress
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code = stringFromBytes db.getCode(address)
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code = fexec{"code"}.getStr
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let toAddress = fexec{"address"}.getStr.parseAddress
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let message = newMessage(
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to = toAddress,
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sender = fexec{"caller"}.getStr.parseAddress,
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value = cast[uint](fexec{"value"}.getHexadecimalInt).u256, # Cast workaround for negative value
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data = fexec{"data"}.getStr.hexToSeqByte,
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code = code,
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gas = fexec{"gas"}.getHexadecimalInt,
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gasPrice = fexec{"gasPrice"}.getHexadecimalInt,
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options = newMessageOptions(origin=fexec{"origin"}.getStr.parseAddress,
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createAddress = toAddress))
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#echo fixture{"exec"}
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var c = newCodeStreamFromUnescaped(code)
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if DEBUG:
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c.displayDecompiled()
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var computation = newBaseComputation(vm.state, message)
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computation.opcodes = OpLogic
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computation.precompiles = initTable[string, Opcode]()
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computation = computation.applyComputation(vm.state, message)
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if not fixture{"post"}.isNil:
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# Success checks
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check(not computation.isError)
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if computation.isError:
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echo "Computation error: ", computation.error.info
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let logEntries = computation.getLogEntries()
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if not fixture{"logs"}.isNil:
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discard
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# TODO hashLogEntries let actualLogsHash = hashLogEntries(logEntries)
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# let expectedLogsHash = fixture{"logs"}.getStr
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# check(expectedLogsHash == actualLogsHash)
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elif logEntries.len > 0:
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checkpoint(&"Got log entries: {logEntries}")
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fail()
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let expectedOutput = fixture{"out"}.getStr
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check(computation.output == expectedOutput)
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let gasMeter = computation.gasMeter
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let expectedGasRemaining = fixture{"gas"}.getHexadecimalInt
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let actualGasRemaining = gasMeter.gasRemaining
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checkpoint(&"Remaining: {actualGasRemaining} - Expected: {expectedGasRemaining}")
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check(actualGasRemaining == expectedGasRemaining or
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computation.code.hasSStore() and
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(actualGasRemaining > expectedGasRemaining and (actualGasRemaining - expectedGasRemaining) mod 15_000 == 0 or
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expectedGasRemaining > actualGasRemaining and (expectedGasRemaining - actualGasRemaining) mod 15_000 == 0))
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let callCreatesJson = fixture{"callcreates"}
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var callCreates: seq[JsonNode] = @[]
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if not callCreatesJson.isNil:
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for next in callCreatesJson:
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callCreates.add(next)
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check(computation.children.len == callCreates.len)
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for child in zip(computation.children, callCreates):
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var (childComputation, createdCall) = child
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let toAddress = createdCall{"destination"}.getStr.parseAddress
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let data = createdCall{"data"}.getStr.hexToSeqByte
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let gasLimit = createdCall{"gasLimit"}.getHexadecimalInt
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let value = createdCall{"value"}.getHexadecimalInt.u256
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check(childComputation.msg.to == toAddress)
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check(data == childComputation.msg.data or childComputation.msg.code.len > 0)
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check(gasLimit == childComputation.msg.gas)
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check(value == childComputation.msg.value)
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# TODO postState = fixture{"post"}
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if not fixture{"post"}.isNil:
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verifyStateDb(fixture{"post"}, computation.vmState.readOnlyStateDB)
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else:
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# Error checks
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check(computation.isError)
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# TODO postState = fixture{"pre"}
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