utils fuzzer

Fuzzer

using ubuntu 18.06.1 version of docker-ce (18.06.1-ce; api version 1.38)

setup

1. install evmlab with extras: fuzztests, docker
   #> pip install -e ".[fuzztests,docker]"
   or
   #> pip install "evmlab[fuzztests,docker]"

2. (optional) adjust config in statetests.ini
   the default should actually work out-of-the-box. Make sure that configured temporary and datapaths exist.

3. start fuzzing
   (.env3)#> utilities/fuzzer.py

FAQ

• make sure the directory structure from statetests.ini::tests_path is writeable by fuzzer.py as it is used to store logs and testcase files
• 409 Client Error - Conflict - container already in use
  docker.errors.APIError: 409 Client Error: Conflict ("Conflict. The container name "/parity" is already in use by container "...ID...". You have to remove (or rename) that container to be able to reuse that name.")
  • --> FIX: docker container rm "/parity" and docker container rm "/geth"
• Docker API version error
  • --> FIX: upgrade docker-ce to latest version
• update container images
  • delete the docker images and run fuzzer.py which will download the images again: docker image rm ethereum/client-go:alltools-latest --force and docker image rm holiman/parityvm --force