add EOF V1 code deployment test case

tests/all_tests.nim

@@ -46,4 +46,5 @@ cliBuilder:
           ./test_configuration,
           ./test_keyed_queue_rlp,
           ./test_txpool,
-          ./test_merge
+          ./test_merge,
+          ./test_eof

tests/customgenesis/eof.json

@@ -0,0 +1,31 @@
+{
+  "config": {
+    "chainId": 7,
+    "homesteadBlock": 0,
+    "eip150Block": 0,
+    "eip150Hash": "0x5de1ee4135274003348e80b788e5afa4b18b18d320a5622218d5c493fedf5689",
+    "eip155Block": 0,
+    "eip158Block": 0,
+    "byzantiumBlock": 0,
+    "constantinopleBlock": 0,
+    "petersburgBlock": 0,
+    "istanbulBlock": 0,
+    "muirGlacierBlock": 0,
+    "berlinBlock": 0,
+    "londonBlock": 0,
+    "mergeForkBlock": 0,
+    "shanghaiBlock": 0,
+    "cancunBlock": 0,
+    "terminalTotalDifficulty": 0
+  },
+  "genesis": {
+    "coinbase": "0x0000000000000000000000000000000000000000",
+    "difficulty": "0x30000",
+    "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000658bdf435d810c91414ec09147daa6db624063790000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+    "gasLimit": "0x2fefd8",
+    "nonce": "0x0000000000000000",
+    "timestamp": "0x1234",
+    "alloc": {
+    }
+  }
+}

tests/test_eof.nim

@@ -0,0 +1,338 @@
+import
+  std/[tables, math, times],
+  eth/[keys],
+  stew/byteutils,
+  unittest2,
+  ../nimbus/core/chain,
+  ../nimbus/core/tx_pool,
+  ../nimbus/core/casper,
+  ../nimbus/db/accounts_cache,
+  ../nimbus/utils/[eof, utils],
+  ../nimbus/evm/interpreter/op_codes,
+  ../nimbus/[common, config, transaction],
+  ./test_txpool/helpers
+
+const
+  baseDir = [".", "tests"]
+  repoDir = [".", "customgenesis"]
+  genesisFile = "eof.json"
+
+type
+  TestEnv = object
+    nonce   : uint64
+    chainId : ChainId
+    vaultKey: PrivateKey
+    conf    : NimbusConf
+    com     : CommonRef
+    chain   : ChainRef
+    xp      : TxPoolRef
+
+proc toAddress(x: string): EthAddress =
+  hexToByteArray[20](x)
+
+proc privKey(keyHex: string): PrivateKey =
+  let kRes = PrivateKey.fromHex(keyHex)
+  if kRes.isErr:
+    echo kRes.error
+    quit(QuitFailure)
+
+  kRes.get()
+
+proc toAddress(key: PrivateKey): EthAddress =
+  let pubKey = key.toPublicKey
+  pubKey.toCanonicalAddress
+
+func eth(n: int): UInt256 =
+  n.u256 * pow(10.u256, 18)
+
+proc fm(input, output, max: int): FunctionMetadata =
+  FunctionMetadata(input: input.uint8,
+    output: output.uint8, maxStackHeight: max.uint16)
+
+const
+  createDeployer = [
+    byte(CALLDATASIZE), # size
+    byte(PUSH1), 0x00,  # offset
+    byte(PUSH1), 0x00,  # dst
+    byte(CALLDATACOPY),
+    byte(CALLDATASIZE), # len
+    byte(PUSH1), 0x00,  # offset
+    byte(PUSH1), 0x00,  # value
+    byte(CREATE),
+  ]
+
+  create2Deployer = [
+    byte(CALLDATASIZE), # len
+    byte(PUSH1), 0x00,  # offset
+    byte(PUSH1), 0x00,  # dst
+    byte(CALLDATACOPY),
+    byte(PUSH1), 0x00,  # salt
+    byte(CALLDATASIZE), # len
+    byte(PUSH1), 0x00,  # offset
+    byte(PUSH1), 0x00,  # value
+    byte(CREATE2),
+  ]
+
+  aa     = toAddress("0x000000000000000000000000000000000000aaaa")
+  bb     = toAddress("0x000000000000000000000000000000000000bbbb")
+  cc     = toAddress("0x000000000000000000000000000000000000cccc")
+  funds  = 1.eth
+  vaultKeyHex = "b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291"
+
+proc acc(code: openArray[byte]): GenesisAccount =
+  GenesisAccount(code: @code)
+
+proc acc(balance: UInt256): GenesisAccount =
+  GenesisAccount(balance: balance)
+
+proc makeCode(): seq[byte] =
+  var c: Container
+  c.types = @[
+    fm(0, 0, 0),
+    fm(0, 0, 2),
+    fm(0, 0, 0),
+    fm(0, 0, 2)
+  ]
+
+  c.code = @[@[
+    byte(CALLF),
+    byte(0),
+    byte(1),
+    byte(CALLF),
+    byte(0),
+    byte(2),
+    byte(STOP),
+  ], @[
+    byte(PUSH1),
+    byte(2),
+    byte(RJUMP), # skip first flag
+    byte(0),
+    byte(5),
+
+    byte(PUSH1),
+    byte(1),
+    byte(PUSH1),
+    byte(0),
+    byte(SSTORE), # set first flag
+
+    byte(PUSH1),
+    byte(1),
+    byte(SWAP1),
+    byte(SUB),
+    byte(DUP1),
+    byte(RJUMPI), # jump to first flag, then don't branch
+    byte(0xff),
+    byte(0xF3),   # -13
+
+    byte(PUSH1),
+    byte(1),
+    byte(PUSH1),
+    byte(1),
+    byte(SSTORE), # set second flag
+    byte(RETF),
+  ], @[
+    byte(PUSH1),
+    byte(1),
+    byte(PUSH1),
+    byte(2),
+    byte(SSTORE), # set third flag
+
+    byte(CALLF),
+    byte(0),
+    byte(3),
+    byte(RETF),
+  ], @[
+    byte(PUSH1),
+    byte(0),
+    byte(RJUMPV), # jump over invalid op
+    byte(1),
+    byte(0),
+    byte(1),
+
+    byte(INVALID),
+
+    byte(PUSH1),
+    byte(1),
+    byte(PUSH1),
+    byte(3),
+    byte(SSTORE), # set forth flag
+    byte(RETF),
+  ]]
+
+  c.encode()
+
+proc preAlloc(address: EthAddress): GenesisAlloc =
+  result[address] = acc(funds)
+  result[bb] = acc(createDeployer)
+  result[cc] = acc(create2Deployer)
+  result[aa] = acc(makeCode())
+
+proc initDeployCode(): seq[byte] =
+  let c = Container(
+    types: @[fm(0, 0, 0)],
+    code : @[@[byte(STOP)]],
+  )
+  c.encode()
+
+proc initInitCode(deployCode: openArray[byte]): seq[byte] =
+  result = @[
+    byte(PUSH1), byte(deployCode.len), # len
+    byte(PUSH1), 0x0c, # offset
+    byte(PUSH1), 0x00, # dst offset
+    byte(CODECOPY),
+
+    # code in memory
+    byte(PUSH1), byte(deployCode.len), # size
+    byte(PUSH1), 0x00, # offset
+    byte(RETURN),
+  ]
+  result.add deployCode
+
+func gwei(n: uint64): GasInt {.compileTime.} =
+  GasInt(n * (10'u64 ^ 9'u64))
+
+proc makeTx*(t: var TestEnv,
+             recipient: Option[EthAddress],
+             amount: UInt256,
+             payload: openArray[byte] = []): Transaction =
+  const
+    gasLimit = 500000.GasInt
+    gasFeeCap = 5.gwei
+    gasTipCap = 2.GasInt
+
+  let tx = Transaction(
+    txType  : TxEip1559,
+    chainId : t.chainId,
+    nonce   : AccountNonce(t.nonce),
+    gasLimit: gasLimit,
+    maxPriorityFee: gasTipCap,
+    maxFee  : gasFeeCap,
+    to      : recipient,
+    value   : amount,
+    payload : @payload
+  )
+
+  inc t.nonce
+  signTransaction(tx, t.vaultKey, t.chainId, eip155 = true)
+
+proc initEnv(): TestEnv =
+  let
+    signKey = privKey(vaultKeyHex)
+    address = toAddress(signKey)
+
+  var
+    conf = makeConfig(@[
+      "--engine-signer:" & address.toHex,
+      "--custom-network:" & genesisFile.findFilePath(baseDir,repoDir).value
+    ])
+
+  conf.networkParams.genesis.alloc = preAlloc(address)
+
+  let
+    com = CommonRef.new(
+      newMemoryDb(),
+      conf.pruneMode == PruneMode.Full,
+      conf.networkId,
+      conf.networkParams
+    )
+    chain = newChain(com)
+
+  com.initializeEmptyDb()
+
+  result = TestEnv(
+    conf: conf,
+    com: com,
+    chain: chain,
+    xp: TxPoolRef.new(com, conf.engineSigner),
+    vaultKey: signKey,
+    chainId: conf.networkParams.config.chainId,
+    nonce: 0'u64
+  )
+
+const
+  prevRandao = EMPTY_UNCLE_HASH # it can be any valid hash
+
+proc eofMain*() =
+  var
+    env = initEnv()
+    txs: seq[Transaction]
+    stateRoot: Hash256
+
+  let
+    deployCode = initDeployCode()
+    initCode   = initInitCode(deployCode)
+    xp = env.xp
+    com = env.com
+    chain = env.chain
+
+  # execute flag contract
+  txs.add env.makeTx(some(aa), 0.u256)
+
+  # deploy eof contract from eoa
+  txs.add env.makeTx(none(EthAddress), 0.u256, initCode)
+
+  # deploy eof contract from create contract
+  txs.add env.makeTx(some(bb), 0.u256, initCode)
+
+  # deploy eof contract from create2 contract
+  txs.add env.makeTx(some(cc), 0.u256, initCode)
+
+  suite "Test EOF code deployment":
+    test "add txs to txpool":
+      for tx in txs:
+        let res = xp.addLocal(tx, force = true)
+        check res.isOk
+        if res.isErr:
+          debugEcho res.error
+          return
+
+      # all txs accepted in txpool
+      check xp.nItems.total == 4
+
+    test "generate POS block":
+      com.pos.prevRandao = prevRandao
+      com.pos.feeRecipient = aa
+      com.pos.timestamp = getTime()
+
+      let blk = xp.ethBlock()
+      check com.isBlockAfterTtd(blk.header)
+
+      let body = BlockBody(
+        transactions: blk.txs,
+        uncles: blk.uncles
+      )
+      check blk.txs.len == 4
+
+      let rr = chain.persistBlocks([blk.header], [body])
+      check rr == ValidationResult.OK
+
+      # save stateRoot for next test
+      stateRoot = blk.header.stateRoot
+
+    test "check flags and various deployment mechanisms":
+      var state = AccountsCache.init(
+        com.db.db,
+        stateRoot,
+        com.pruneTrie)
+
+      # check flags
+      for i in 0 ..< 4:
+        let val = state.getStorage(aa, i.u256)
+        check val == 1.u256
+
+      # deploy EOF with EOA
+      let address = toAddress(env.vaultKey)
+      var code = state.getCode(generateAddress(address, 1))
+      check code == deployCode
+
+      # deploy EOF with CREATE
+      code = state.getCode(generateAddress(bb, 0))
+      check code == deployCode
+
+      # deploy EOF with CREATE2
+      let xx = generateSafeAddress(cc, ZERO_CONTRACTSALT, initCode)
+      code = state.getCode(xx)
+      check code == deployCode
+
+when isMainModule:
+  eofMain()