nimbus-eth2/scripts/run_ssz_fuzzing_test.nims

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# beacon_chain
# Copyright (c) 2020-2024 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import std/os except dirExists
import std/[strformat, confutils]
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import testutils/fuzzing_engines
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const
gitRoot = thisDir() / ".."
fixturesDir = gitRoot / "vendor" / "nim-eth2-scenarios" / "tests-v1.0.1" / "mainnet" / "phase0" / "ssz_static"
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fuzzingTestsDir = gitRoot / "tests" / "fuzzing"
fuzzingCorpusesDir = fuzzingTestsDir / "corpus"
cli do (testname {.argument.}: string,
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fuzzer = defaultFuzzingEngine):
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if not dirExists(fixturesDir):
echo "Please run `make test` first in order to download the consensus spec ETH2 test vectors"
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quit 1
if not dirExists(fixturesDir / testname):
echo testname, " is not a recognized SSZ type name (type names are case-sensitive)"
quit 1
let corpusDir = fuzzingCorpusesDir / testname
rmDir corpusDir
mkDir corpusDir
var inputIdx = 0
template nextInputName: string =
inc inputIdx
"input" & $inputIdx
for file in walkDirRec(fixturesDir / testname):
if splitFile(file).ext == ".ssz":
# TODO Can we create hard links here?
cpFile file, corpusDir / nextInputName()
let testProgram = fuzzingTestsDir / &"ssz_decode_{testname}.nim"
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exec &"""ntu fuzz --fuzzer={fuzzer} --corpus="{corpusDir}" "{testProgram}" """