eth_signTransaction not supported

[wolever]

As of Ganache 6.2.1, using web3.eth.signTransaction(...) returns Method eth_signTransaction not supported.

We run our test suite against ganache, and some tests can't run because of this.

[davidmurdoch]

Thanks @wolever for filing this issue. We haven't intentionally removed any features in ganache-cli@6.2.x, so this would be a regression if we did!

Whats the most recent version of ganache-cli that doesn't cause test failures for you?

[mikeseese]

So I think we misread that this maybe was a regression, but looking over again, it looks like what we thought: we don't support this yet, and never have. Added to the list! Thanks!

[szerintedmi]

I think it has been fixed.
I'm on Ganache CLI v6.4.2 (ganache-core: 2.5.4) and I can sign using web3js-beta36:

web3.eth.accounts.signTransaction(txToSign, privateKey)

[nivida]

web3.eth.accounts.signTransaction !== web3.eth.signTransaction :) @szerintedmi

[szerintedmi]

hoops :)

[davidmurdoch]

eth_signTransaction is not currently part of the Ethereum JSON-RPC spec. Here is the EIP issue proposing to add it: ethereum/EIPs#728

With that said, it looks like geth and parity already support it, as well as web3 and MetaMask.

As long as geth and parity agree on the implementation I don't see any harm in adding it to gananche.

[CJ42]

I solved this by creating new accounts using `web3.eth.accounts.wallet.create(x)' (where x = number of accounts I want to generate).

I then associated the newly created accounts to some global variables accessible through my tests. See below:

contract("My Contract", async (accounts) => {

    let firstAccount,
        secondAccount,
        thirdAccount

    before(async () => {
        await web3.eth.accounts.wallet.create(3) // create 3 accounts

        firstAccount = web3.eth.accounts.wallet[0]
        secondAccount = web3.eth.accounts.wallet[1]
        thirdAccount = web3.eth.accounts.wallet[2]
    })

    // tests here...

})

I was then able to sign data within my tests, using either the:

• privateKey property
  or
  sign(...) method, available in each of these new accounts

I could then sign in two ways

// method 1
web3.eth.accounts.wallet[firstAccount].sign("Message To Sign")

// method 2
web3.eth.accounts.sign("Message To Sign", firstAccount.privateKey)

See response on Ethereum StackExchange question: Sign data with private key inside a truffle test file

[MicaiahReid]

This has been implemented in Ganache v7. See our Upgrade Guide if you want to use this feature!