96 lines
3.9 KiB
Nim
96 lines
3.9 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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stew/byteutils, stew/ranges/typedranges, eth/[rlp, common], eth/trie/db,
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./test_helpers, ../nimbus/vm/interpreter,
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../nimbus/[constants, errors, vm_state, vm_types, utils],
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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 "vm json tests":
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jsonTest("VMTests", testFixture)
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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 = keccakHash(rlp.encode(""))
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let header = BlockHeader(
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coinbase: fenv{"currentCoinbase"}.getStr.parseAddress,
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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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var vmState = newBaseVMState(emptyRlpHash, header, newBaseChainDB(newMemoryDB()))
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let fexec = fixture["exec"]
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var code: seq[byte]
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vmState.mutateStateDB:
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setupStateDB(fixture{"pre"}, db)
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let address = fexec{"address"}.getStr.parseAddress
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code = db.getCode(address).toSeq
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code = fexec{"code"}.getStr.hexToSeqByte
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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[uint64](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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contractCreation = toAddress == ZERO_ADDRESS, # assume ZERO_ADDRESS is a contract creation
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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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var computation = newBaseComputation(vmState, header.blockNumber, message)
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computation.executeOpcodes()
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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.logEntries
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if not fixture{"logs"}.isNil:
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let actualLogsHash = hashLogEntries(logEntries)
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let expectedLogsHash = toLowerAscii(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.outputHex == 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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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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if not fixture{"pre"}.isNil:
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verifyStateDb(fixture{"pre"}, computation.vmState.readOnlyStateDB)
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