Retesteth compatibility tracker

[jam10o-new]

Tracking issue for potential https://github.com/ethereum/retesteth support in parity-ethereum.

RPC methods(source):
[?] test_setChainParams
(https://wiki.parity.io/JSONRPC-parity_set-module#parity_setchain implements this functionality, but accepts a chainspec file not the actual chain specification json)
[ ] debug_accountRangeAt
[ ] test_mineBlocks
[ ] debug_storageRangeAt
[ ] test_getLogHash(optional)
[?] test_rewindToBlock
(#8259 - not RPC-accessible)
[ ] test_modifyTimestamp
[?] test_importRawBlock
(partially implemented in #10609)

sorpaas

We don't have ways to inject custom logic into RPC (switching RPC based on whether the client is running in testing mode or in real chain mode), so implementing it may require some large refactoring for us.

todr

I think in the past we were considering writing a wrapper process around Parity to actually restart the client / use command line instead of implementing all the methods in the core client. Especially stuff like rewindToBlock already exist in the CLI, but might not be that easy to do within the core client.

Stuff like test_mineBlock, test_modifyTimestamp could also just use eth_submitRawBlock method from the core client and construct the block externaly, so we don't polute the core client with hacks to make it work :)